/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/ddlm2013.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:28:14,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:28:14,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:28:14,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:28:14,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:28:14,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:28:14,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:28:14,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:28:14,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:28:14,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:28:14,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:28:14,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:28:14,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:28:14,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:28:14,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:28:14,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:28:14,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:28:14,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:28:14,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:28:14,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:28:14,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:28:14,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:28:14,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:28:14,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:28:14,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:28:14,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:28:14,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:28:14,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:28:14,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:28:14,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:28:14,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:28:14,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:28:14,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:28:14,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:28:14,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:28:14,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:28:14,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:28:14,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:28:14,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:28:14,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:28:14,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:28:14,623 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 03:28:14,671 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:28:14,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:28:14,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:28:14,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:28:14,674 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:28:14,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:28:14,675 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:28:14,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:28:14,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:28:14,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:28:14,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:28:14,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:28:14,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:28:14,677 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:28:14,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:28:14,678 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:28:14,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:28:14,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:28:14,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:28:14,678 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:28:14,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:28:14,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:28:14,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:28:14,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:28:14,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:28:14,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:28:14,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:28:14,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:28:14,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:28:14,680 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:28:15,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:28:15,138 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:28:15,143 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:28:15,145 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:28:15,145 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:28:15,147 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-09-25 03:28:15,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5f7cf876/ef7ef76a96544e5bb0ad2952f3927511/FLAG2e7651ac0 [2020-09-25 03:28:15,772 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:28:15,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-09-25 03:28:15,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5f7cf876/ef7ef76a96544e5bb0ad2952f3927511/FLAG2e7651ac0 [2020-09-25 03:28:16,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5f7cf876/ef7ef76a96544e5bb0ad2952f3927511 [2020-09-25 03:28:16,150 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:28:16,156 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:28:16,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:28:16,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:28:16,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:28:16,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:28:16" (1/1) ... [2020-09-25 03:28:16,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e50e298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:28:16, skipping insertion in model container [2020-09-25 03:28:16,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:28:16" (1/1) ... [2020-09-25 03:28:16,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:28:16,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:28:16,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:28:16,421 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:28:16,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:28:16,463 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:28:16,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:28:16 WrapperNode [2020-09-25 03:28:16,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:28:16,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:28:16,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:28:16,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:28:16,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:28:16" (1/1) ... [2020-09-25 03:28:16,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:28:16" (1/1) ... [2020-09-25 03:28:16,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:28:16" (1/1) ... [2020-09-25 03:28:16,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:28:16" (1/1) ... [2020-09-25 03:28:16,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:28:16" (1/1) ... [2020-09-25 03:28:16,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:28:16" (1/1) ... [2020-09-25 03:28:16,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:28:16" (1/1) ... [2020-09-25 03:28:16,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:28:16,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:28:16,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:28:16,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:28:16,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:28:16" (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 03:28:16,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:28:16,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:28:16,679 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 03:28:16,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 03:28:16,680 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:28:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:28:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:28:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 03:28:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 03:28:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:28:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:28:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:28:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:28:16,945 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:28:16,945 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 03:28:16,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:28:16 BoogieIcfgContainer [2020-09-25 03:28:16,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:28:16,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:28:16,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:28:16,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:28:16,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:28:16" (1/3) ... [2020-09-25 03:28:16,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa5ccab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:28:16, skipping insertion in model container [2020-09-25 03:28:16,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:28:16" (2/3) ... [2020-09-25 03:28:16,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa5ccab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:28:16, skipping insertion in model container [2020-09-25 03:28:16,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:28:16" (3/3) ... [2020-09-25 03:28:16,966 INFO L109 eAbstractionObserver]: Analyzing ICFG ddlm2013.i [2020-09-25 03:28:16,985 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:28:16,996 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:28:17,025 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:28:17,063 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:28:17,063 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:28:17,063 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:28:17,063 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:28:17,063 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:28:17,064 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:28:17,064 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:28:17,064 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:28:17,093 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-25 03:28:17,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-25 03:28:17,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:17,105 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] [2020-09-25 03:28:17,106 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:17,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:17,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1686675663, now seen corresponding path program 1 times [2020-09-25 03:28:17,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:17,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151592493] [2020-09-25 03:28:17,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:17,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:17,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:17,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:17,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 03:28:17,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:28:17,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-09-25 03:28:17,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:17,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:28:17,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:28:17,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 03:28:17,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:28:17,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:17,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:17,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:17,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:17,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:17,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:28:17,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:17,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:17,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:17,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:17,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:17,848 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 03:28:17,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151592493] [2020-09-25 03:28:17,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:28:17,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:28:17,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864951860] [2020-09-25 03:28:17,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:28:17,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:17,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:28:17,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:28:17,884 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 6 states. [2020-09-25 03:28:18,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:18,032 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2020-09-25 03:28:18,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:28:18,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-09-25 03:28:18,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:18,046 INFO L225 Difference]: With dead ends: 72 [2020-09-25 03:28:18,047 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 03:28:18,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:28:18,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 03:28:18,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-09-25 03:28:18,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-25 03:28:18,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-09-25 03:28:18,108 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 22 [2020-09-25 03:28:18,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:18,108 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-09-25 03:28:18,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:28:18,109 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-09-25 03:28:18,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:28:18,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:18,110 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 03:28:18,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:28:18,111 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:18,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:18,112 INFO L82 PathProgramCache]: Analyzing trace with hash -579098768, now seen corresponding path program 1 times [2020-09-25 03:28:18,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:18,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114480623] [2020-09-25 03:28:18,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:18,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:18,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:18,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 03:28:18,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:18,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-09-25 03:28:18,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:18,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:28:18,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:28:18,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 03:28:18,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:18,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:18,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:19,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:19,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:19,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:19,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:28:19,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:19,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:19,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:19,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:19,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:19,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:19,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114480623] [2020-09-25 03:28:19,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:19,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:28:19,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517267976] [2020-09-25 03:28:19,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:28:19,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:19,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:28:19,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:28:19,016 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 11 states. [2020-09-25 03:28:19,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:19,328 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2020-09-25 03:28:19,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:28:19,329 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-09-25 03:28:19,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:19,331 INFO L225 Difference]: With dead ends: 67 [2020-09-25 03:28:19,331 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 03:28:19,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:28:19,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 03:28:19,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2020-09-25 03:28:19,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 03:28:19,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-09-25 03:28:19,342 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 34 [2020-09-25 03:28:19,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:19,343 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-09-25 03:28:19,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:28:19,343 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-09-25 03:28:19,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:28:19,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:19,345 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 03:28:19,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:28:19,345 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:19,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:19,346 INFO L82 PathProgramCache]: Analyzing trace with hash -44019760, now seen corresponding path program 1 times [2020-09-25 03:28:19,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:19,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495277767] [2020-09-25 03:28:19,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:19,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:19,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:19,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:19,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 03:28:19,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:28:19,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 03:28:19,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 03:28:19,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 03:28:19,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:19,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:19,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:19,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:19,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:19,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:19,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:28:19,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:19,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:19,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:19,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 03:28:19,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495277767] [2020-09-25 03:28:19,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:28:19,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:28:19,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34246896] [2020-09-25 03:28:19,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:28:19,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:19,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:28:19,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:28:19,557 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 3 states. [2020-09-25 03:28:19,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:19,569 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2020-09-25 03:28:19,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:28:19,570 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-09-25 03:28:19,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:19,571 INFO L225 Difference]: With dead ends: 74 [2020-09-25 03:28:19,571 INFO L226 Difference]: Without dead ends: 51 [2020-09-25 03:28:19,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:28:19,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-25 03:28:19,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-25 03:28:19,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 03:28:19,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-09-25 03:28:19,580 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 34 [2020-09-25 03:28:19,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:19,581 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-09-25 03:28:19,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:28:19,581 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-09-25 03:28:19,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 03:28:19,583 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:19,583 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 03:28:19,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:28:19,584 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:19,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:19,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1122436602, now seen corresponding path program 2 times [2020-09-25 03:28:19,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:19,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377658012] [2020-09-25 03:28:19,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:19,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:20,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:20,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 03:28:20,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:20,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-09-25 03:28:20,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:20,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:28:20,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:28:20,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 03:28:20,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:20,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:20,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:20,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:20,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:20,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:20,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:28:20,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:20,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:20,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:20,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:20,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:20,492 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:20,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377658012] [2020-09-25 03:28:20,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:20,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 03:28:20,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673585660] [2020-09-25 03:28:20,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 03:28:20,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:20,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 03:28:20,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:28:20,495 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 15 states. [2020-09-25 03:28:21,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:21,050 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2020-09-25 03:28:21,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 03:28:21,051 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-09-25 03:28:21,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:21,052 INFO L225 Difference]: With dead ends: 81 [2020-09-25 03:28:21,053 INFO L226 Difference]: Without dead ends: 71 [2020-09-25 03:28:21,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2020-09-25 03:28:21,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-25 03:28:21,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 51. [2020-09-25 03:28:21,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 03:28:21,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-09-25 03:28:21,060 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 44 [2020-09-25 03:28:21,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:21,061 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-09-25 03:28:21,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 03:28:21,061 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-09-25 03:28:21,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 03:28:21,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:21,063 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 03:28:21,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:28:21,063 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:21,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:21,066 INFO L82 PathProgramCache]: Analyzing trace with hash 937303643, now seen corresponding path program 1 times [2020-09-25 03:28:21,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:21,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233859396] [2020-09-25 03:28:21,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:21,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:21,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:21,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:21,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:28:21,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:28:21,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-09-25 03:28:21,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:21,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:28:21,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 03:28:21,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 03:28:21,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:21,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:21,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:21,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:21,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:21,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:21,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:21,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:21,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:21,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:21,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233859396] [2020-09-25 03:28:21,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:28:21,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 03:28:21,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647456591] [2020-09-25 03:28:21,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 03:28:21,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:21,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 03:28:21,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:28:21,683 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 3 states. [2020-09-25 03:28:21,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:21,710 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2020-09-25 03:28:21,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 03:28:21,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-25 03:28:21,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:21,712 INFO L225 Difference]: With dead ends: 70 [2020-09-25 03:28:21,712 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 03:28:21,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 03:28:21,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 03:28:21,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 03:28:21,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 03:28:21,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 03:28:21,729 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 46 [2020-09-25 03:28:21,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:21,729 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 03:28:21,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 03:28:21,729 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 03:28:21,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 03:28:21,733 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:21,733 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 03:28:21,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:28:21,734 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:21,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:21,734 INFO L82 PathProgramCache]: Analyzing trace with hash -129827524, now seen corresponding path program 1 times [2020-09-25 03:28:21,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:21,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134067492] [2020-09-25 03:28:21,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:21,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:21,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:22,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:22,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 03:28:22,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:28:22,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-25 03:28:22,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:22,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:28:22,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 03:28:22,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:28:22,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:22,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:22,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:22,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:22,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:22,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:22,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:28:22,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:22,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:22,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:22,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:22,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:28:22,207 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:28:22,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134067492] [2020-09-25 03:28:22,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:22,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 03:28:22,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006531140] [2020-09-25 03:28:22,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:28:22,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:22,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:28:22,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:28:22,210 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 5 states. [2020-09-25 03:28:22,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:22,236 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2020-09-25 03:28:22,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:28:22,237 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-09-25 03:28:22,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:22,238 INFO L225 Difference]: With dead ends: 68 [2020-09-25 03:28:22,238 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 03:28:22,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 03:28:22,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 03:28:22,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 03:28:22,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 03:28:22,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 03:28:22,240 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-09-25 03:28:22,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:22,240 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 03:28:22,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:28:22,241 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 03:28:22,241 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 03:28:22,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:28:22,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 03:28:22,355 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 03:28:22,356 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 03:28:22,356 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 03:28:22,356 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 03:28:22,356 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 03:28:22,356 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 03:28:22,356 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 03:28:22,357 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 03:28:22,357 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 03:28:22,357 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 03:28:22,357 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 03:28:22,357 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 03:28:22,357 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-25 03:28:22,357 INFO L268 CegarLoopResult]: For program point L31-2(line 31) no Hoare annotation was computed. [2020-09-25 03:28:22,357 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 03:28:22,358 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 38) no Hoare annotation was computed. [2020-09-25 03:28:22,358 INFO L268 CegarLoopResult]: For program point L19(lines 19 23) no Hoare annotation was computed. [2020-09-25 03:28:22,358 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 03:28:22,358 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 03:28:22,358 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 03:28:22,359 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-09-25 03:28:22,359 INFO L268 CegarLoopResult]: For program point L28-2(lines 13 38) no Hoare annotation was computed. [2020-09-25 03:28:22,359 INFO L268 CegarLoopResult]: For program point L24(lines 24 33) no Hoare annotation was computed. [2020-09-25 03:28:22,359 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-25 03:28:22,359 INFO L268 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-09-25 03:28:22,359 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 03:28:22,360 INFO L268 CegarLoopResult]: For program point L24-4(lines 13 38) no Hoare annotation was computed. [2020-09-25 03:28:22,360 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 03:28:22,360 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-25 03:28:22,360 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 03:28:22,360 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-25 03:28:22,360 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-25 03:28:22,361 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 03:28:22,361 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 38) no Hoare annotation was computed. [2020-09-25 03:28:22,361 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-09-25 03:28:22,361 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 38) the Hoare annotation is: true [2020-09-25 03:28:22,362 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-25 03:28:22,362 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 03:28:22,362 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 03:28:22,362 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 03:28:22,362 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 03:28:22,362 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-25 03:28:22,364 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (let ((.cse3 (div main_~a~0 4294967296)) (.cse2 (div main_~b~0 4294967296))) (or (let ((.cse1 (* 4294967296 .cse3)) (.cse0 (+ (* 4294967296 .cse2) main_~a~0))) (and (<= main_~b~0 main_~a~0) (< .cse0 (+ .cse1 main_~b~0 1)) (<= (+ .cse1 main_~b~0) .cse0))) (and (<= 0 main_~a~0) (<= main_~a~0 0) (= (+ (* .cse3 4294967296) main_~b~0) (+ (* .cse2 4294967296) main_~a~0))))) [2020-09-25 03:28:22,364 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 03:28:22,364 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 03:28:22,365 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 03:28:22,365 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 03:28:22,365 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 03:28:22,366 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 03:28:22,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:28:22 BoogieIcfgContainer [2020-09-25 03:28:22,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:28:22,382 INFO L168 Benchmark]: Toolchain (without parser) took 6227.36 ms. Allocated memory was 140.5 MB in the beginning and 278.9 MB in the end (delta: 138.4 MB). Free memory was 102.2 MB in the beginning and 220.5 MB in the end (delta: -118.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-09-25 03:28:22,383 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 03:28:22,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.09 ms. Allocated memory is still 140.5 MB. Free memory was 101.6 MB in the beginning and 91.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-25 03:28:22,391 INFO L168 Benchmark]: Boogie Preprocessor took 130.95 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 91.9 MB in the beginning and 182.6 MB in the end (delta: -90.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 03:28:22,392 INFO L168 Benchmark]: RCFGBuilder took 356.00 ms. Allocated memory is still 204.5 MB. Free memory was 182.6 MB in the beginning and 168.4 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-09-25 03:28:22,393 INFO L168 Benchmark]: TraceAbstraction took 5423.14 ms. Allocated memory was 204.5 MB in the beginning and 278.9 MB in the end (delta: 74.4 MB). Free memory was 167.8 MB in the beginning and 220.5 MB in the end (delta: -52.7 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-25 03:28:22,405 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 307.09 ms. Allocated memory is still 140.5 MB. Free memory was 101.6 MB in the beginning and 91.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.95 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 91.9 MB in the beginning and 182.6 MB in the end (delta: -90.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 356.00 ms. Allocated memory is still 204.5 MB. Free memory was 182.6 MB in the beginning and 168.4 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5423.14 ms. Allocated memory was 204.5 MB in the beginning and 278.9 MB in the end (delta: 74.4 MB). Free memory was 167.8 MB in the beginning and 220.5 MB in the end (delta: -52.7 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 232 SDtfs, 164 SDslu, 755 SDs, 0 SdLazy, 335 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 31 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 13 PreInvPairs, 17 NumberOfFragments, 63 HoareAnnotationTreeSize, 13 FomulaSimplifications, 23 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 228 NumberOfCodeBlocks, 228 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 71143 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 22/47 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...