/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:06:41,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:06:41,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:06:41,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:06:41,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:06:41,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:06:41,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:06:41,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:06:41,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:06:41,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:06:41,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:06:41,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:06:41,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:06:41,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:06:41,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:06:41,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:06:41,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:06:41,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:06:41,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:06:41,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:06:41,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:06:41,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:06:41,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:06:41,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:06:41,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 17:06:41,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:06:41,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:06:41,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:06:41,650 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 17:06:41,676 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:06:41,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:06:41,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:06:41,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:06:41,679 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:06:41,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:06:41,679 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:06:41,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:06:41,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:06:41,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:06:41,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:06:41,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:06:41,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:06:41,681 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:06:41,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:06:41,681 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:06:41,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:06:41,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:06:41,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:06:41,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:06:41,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:06:41,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:06:41,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:06:41,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:06:41,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:06:41,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:06:41,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:06:41,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:06:41,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:06:41,685 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;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;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;log-additional-information=true; [2020-09-24 17:06:42,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:06:42,190 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:06:42,194 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:06:42,196 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:06:42,197 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:06:42,198 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_11.c [2020-09-24 17:06:42,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ec5b81c8/b186b5bcef9b4cb5b4ed8c46b0d6d5cb/FLAG7f9913a37 [2020-09-24 17:06:42,852 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:06:42,853 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_11.c [2020-09-24 17:06:42,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ec5b81c8/b186b5bcef9b4cb5b4ed8c46b0d6d5cb/FLAG7f9913a37 [2020-09-24 17:06:43,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ec5b81c8/b186b5bcef9b4cb5b4ed8c46b0d6d5cb [2020-09-24 17:06:43,198 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:06:43,205 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:06:43,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:06:43,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:06:43,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:06:43,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:06:43" (1/1) ... [2020-09-24 17:06:43,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@790fb128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:43, skipping insertion in model container [2020-09-24 17:06:43,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:06:43" (1/1) ... [2020-09-24 17:06:43,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:06:43,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:06:43,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:06:43,489 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:06:43,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:06:43,542 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:06:43,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:43 WrapperNode [2020-09-24 17:06:43,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:06:43,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:06:43,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:06:43,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:06:43,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:43" (1/1) ... [2020-09-24 17:06:43,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:43" (1/1) ... [2020-09-24 17:06:43,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:43" (1/1) ... [2020-09-24 17:06:43,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:43" (1/1) ... [2020-09-24 17:06:43,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:43" (1/1) ... [2020-09-24 17:06:43,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:43" (1/1) ... [2020-09-24 17:06:43,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:43" (1/1) ... [2020-09-24 17:06:43,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:06:43,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:06:43,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:06:43,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:06:43,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:43" (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 17:06:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:06:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:06:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:06:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:06:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:06:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:06:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:06:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:06:44,277 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:06:44,277 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:06:44,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:06:44 BoogieIcfgContainer [2020-09-24 17:06:44,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:06:44,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:06:44,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:06:44,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:06:44,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:06:43" (1/3) ... [2020-09-24 17:06:44,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ccdbc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:06:44, skipping insertion in model container [2020-09-24 17:06:44,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:06:43" (2/3) ... [2020-09-24 17:06:44,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ccdbc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:06:44, skipping insertion in model container [2020-09-24 17:06:44,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:06:44" (3/3) ... [2020-09-24 17:06:44,297 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_11.c [2020-09-24 17:06:44,311 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:06:44,327 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:06:44,347 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:06:44,377 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:06:44,377 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:06:44,378 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:06:44,378 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:06:44,378 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:06:44,378 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:06:44,378 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:06:44,378 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:06:44,402 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2020-09-24 17:06:44,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 17:06:44,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:44,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:44,414 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:44,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:44,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1546178992, now seen corresponding path program 1 times [2020-09-24 17:06:44,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:44,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259704515] [2020-09-24 17:06:44,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:44,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:44,848 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:44,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 17:06:44,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:44,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-24 17:06:44,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:44,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:44,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-24 17:06:44,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:06:44,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:06:44,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:45,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:45,002 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:45,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:45,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:45,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:06:45,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:45,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:45,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:45,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:45,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:45,041 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 17:06:45,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259704515] [2020-09-24 17:06:45,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:45,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:45,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854552836] [2020-09-24 17:06:45,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:45,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:45,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:45,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:45,077 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 3 states. [2020-09-24 17:06:45,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:45,174 INFO L93 Difference]: Finished difference Result 279 states and 384 transitions. [2020-09-24 17:06:45,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:45,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-09-24 17:06:45,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:45,193 INFO L225 Difference]: With dead ends: 279 [2020-09-24 17:06:45,194 INFO L226 Difference]: Without dead ends: 192 [2020-09-24 17:06:45,199 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 [2020-09-24 17:06:45,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-09-24 17:06:45,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2020-09-24 17:06:45,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-24 17:06:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 252 transitions. [2020-09-24 17:06:45,273 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 252 transitions. Word has length 79 [2020-09-24 17:06:45,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:45,274 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 252 transitions. [2020-09-24 17:06:45,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:45,274 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 252 transitions. [2020-09-24 17:06:45,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 17:06:45,278 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:45,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:45,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:06:45,279 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:45,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:45,279 INFO L82 PathProgramCache]: Analyzing trace with hash 687152074, now seen corresponding path program 1 times [2020-09-24 17:06:45,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:45,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753043714] [2020-09-24 17:06:45,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:45,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:45,451 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:45,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 17:06:45,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:45,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-24 17:06:45,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:45,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:45,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 17:06:45,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:06:45,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:45,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:45,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:45,496 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:45,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:45,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:45,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:45,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:45,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:45,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:45,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:45,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:45,529 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 17:06:45,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753043714] [2020-09-24 17:06:45,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:45,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:45,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375603075] [2020-09-24 17:06:45,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:45,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:45,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:45,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:45,540 INFO L87 Difference]: Start difference. First operand 190 states and 252 transitions. Second operand 3 states. [2020-09-24 17:06:45,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:45,628 INFO L93 Difference]: Finished difference Result 466 states and 650 transitions. [2020-09-24 17:06:45,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:45,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-09-24 17:06:45,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:45,635 INFO L225 Difference]: With dead ends: 466 [2020-09-24 17:06:45,635 INFO L226 Difference]: Without dead ends: 325 [2020-09-24 17:06:45,641 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 [2020-09-24 17:06:45,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-09-24 17:06:45,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2020-09-24 17:06:45,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-09-24 17:06:45,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 442 transitions. [2020-09-24 17:06:45,693 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 442 transitions. Word has length 80 [2020-09-24 17:06:45,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:45,693 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 442 transitions. [2020-09-24 17:06:45,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:45,694 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 442 transitions. [2020-09-24 17:06:45,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 17:06:45,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:45,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:45,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:06:45,698 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:45,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:45,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1261830773, now seen corresponding path program 1 times [2020-09-24 17:06:45,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:45,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179702655] [2020-09-24 17:06:45,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:45,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:45,792 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:45,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 17:06:45,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:45,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 17:06:45,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:45,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:45,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 17:06:45,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 17:06:45,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:45,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:45,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:45,830 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:45,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:45,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:45,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:45,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:45,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:45,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:45,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:45,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:45,839 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 17:06:45,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179702655] [2020-09-24 17:06:45,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:45,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:45,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958466506] [2020-09-24 17:06:45,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:45,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:45,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:45,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:45,842 INFO L87 Difference]: Start difference. First operand 323 states and 442 transitions. Second operand 3 states. [2020-09-24 17:06:45,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:45,861 INFO L93 Difference]: Finished difference Result 397 states and 552 transitions. [2020-09-24 17:06:45,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:45,862 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-09-24 17:06:45,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:45,868 INFO L225 Difference]: With dead ends: 397 [2020-09-24 17:06:45,868 INFO L226 Difference]: Without dead ends: 395 [2020-09-24 17:06:45,869 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 [2020-09-24 17:06:45,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-09-24 17:06:45,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 323. [2020-09-24 17:06:45,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-09-24 17:06:45,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 440 transitions. [2020-09-24 17:06:45,907 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 440 transitions. Word has length 80 [2020-09-24 17:06:45,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:45,909 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 440 transitions. [2020-09-24 17:06:45,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:45,909 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 440 transitions. [2020-09-24 17:06:45,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-24 17:06:45,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:45,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:45,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:06:45,919 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:45,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:45,920 INFO L82 PathProgramCache]: Analyzing trace with hash 397182858, now seen corresponding path program 1 times [2020-09-24 17:06:45,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:45,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457614122] [2020-09-24 17:06:45,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:45,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,041 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:46,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 17:06:46,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:46,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 17:06:46,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-24 17:06:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 17:06:46,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:46,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:46,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,087 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:46,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:46,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:46,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:46,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:46,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:46,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:46,095 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 17:06:46,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457614122] [2020-09-24 17:06:46,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:46,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:46,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213442548] [2020-09-24 17:06:46,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:46,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:46,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:46,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:46,100 INFO L87 Difference]: Start difference. First operand 323 states and 440 transitions. Second operand 3 states. [2020-09-24 17:06:46,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:46,124 INFO L93 Difference]: Finished difference Result 395 states and 546 transitions. [2020-09-24 17:06:46,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:46,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-09-24 17:06:46,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:46,131 INFO L225 Difference]: With dead ends: 395 [2020-09-24 17:06:46,131 INFO L226 Difference]: Without dead ends: 393 [2020-09-24 17:06:46,132 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 [2020-09-24 17:06:46,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-09-24 17:06:46,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 323. [2020-09-24 17:06:46,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-09-24 17:06:46,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 438 transitions. [2020-09-24 17:06:46,151 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 438 transitions. Word has length 81 [2020-09-24 17:06:46,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:46,152 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 438 transitions. [2020-09-24 17:06:46,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:46,157 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 438 transitions. [2020-09-24 17:06:46,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-24 17:06:46,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:46,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:46,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:06:46,163 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:46,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:46,163 INFO L82 PathProgramCache]: Analyzing trace with hash -172878236, now seen corresponding path program 1 times [2020-09-24 17:06:46,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:46,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159022434] [2020-09-24 17:06:46,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:46,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,257 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:46,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 17:06:46,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:46,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 17:06:46,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-24 17:06:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:06:46,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:46,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:46,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,295 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:46,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:46,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:46,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 17:06:46,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:46,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:46,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:46,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:46,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:46,304 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 17:06:46,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159022434] [2020-09-24 17:06:46,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:46,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:46,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517807168] [2020-09-24 17:06:46,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:46,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:46,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:46,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:46,308 INFO L87 Difference]: Start difference. First operand 323 states and 438 transitions. Second operand 3 states. [2020-09-24 17:06:46,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:46,333 INFO L93 Difference]: Finished difference Result 859 states and 1200 transitions. [2020-09-24 17:06:46,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:46,333 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-09-24 17:06:46,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:46,337 INFO L225 Difference]: With dead ends: 859 [2020-09-24 17:06:46,338 INFO L226 Difference]: Without dead ends: 585 [2020-09-24 17:06:46,340 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 [2020-09-24 17:06:46,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-09-24 17:06:46,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 583. [2020-09-24 17:06:46,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2020-09-24 17:06:46,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 802 transitions. [2020-09-24 17:06:46,359 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 802 transitions. Word has length 81 [2020-09-24 17:06:46,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:46,360 INFO L479 AbstractCegarLoop]: Abstraction has 583 states and 802 transitions. [2020-09-24 17:06:46,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:46,360 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 802 transitions. [2020-09-24 17:06:46,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-24 17:06:46,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:46,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:46,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:06:46,363 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:46,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:46,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1064013698, now seen corresponding path program 1 times [2020-09-24 17:06:46,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:46,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842407637] [2020-09-24 17:06:46,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:46,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,443 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:46,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 17:06:46,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:46,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 17:06:46,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:46,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:46,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-24 17:06:46,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:06:46,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:46,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:46,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,480 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:46,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:46,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:46,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:46,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:46,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:46,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:46,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:46,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:46,498 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 17:06:46,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842407637] [2020-09-24 17:06:46,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:46,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:46,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743377675] [2020-09-24 17:06:46,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:46,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:46,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:46,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:46,500 INFO L87 Difference]: Start difference. First operand 583 states and 802 transitions. Second operand 3 states. [2020-09-24 17:06:46,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:46,529 INFO L93 Difference]: Finished difference Result 1627 states and 2276 transitions. [2020-09-24 17:06:46,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:46,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-09-24 17:06:46,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:46,535 INFO L225 Difference]: With dead ends: 1627 [2020-09-24 17:06:46,536 INFO L226 Difference]: Without dead ends: 1093 [2020-09-24 17:06:46,538 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 [2020-09-24 17:06:46,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2020-09-24 17:06:46,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1091. [2020-09-24 17:06:46,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2020-09-24 17:06:46,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1506 transitions. [2020-09-24 17:06:46,568 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1506 transitions. Word has length 82 [2020-09-24 17:06:46,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:46,568 INFO L479 AbstractCegarLoop]: Abstraction has 1091 states and 1506 transitions. [2020-09-24 17:06:46,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:46,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1506 transitions. [2020-09-24 17:06:46,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-24 17:06:46,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:46,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:46,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:06:46,571 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:46,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:46,572 INFO L82 PathProgramCache]: Analyzing trace with hash -637098359, now seen corresponding path program 1 times [2020-09-24 17:06:46,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:46,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549597004] [2020-09-24 17:06:46,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:46,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,649 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:46,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 17:06:46,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:46,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 17:06:46,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:46,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:46,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-24 17:06:46,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 17:06:46,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:46,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:46,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,674 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:46,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:46,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:46,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:46,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:46,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:46,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:46,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:46,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:46,681 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 17:06:46,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549597004] [2020-09-24 17:06:46,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:46,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:46,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327265686] [2020-09-24 17:06:46,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:46,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:46,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:46,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:46,683 INFO L87 Difference]: Start difference. First operand 1091 states and 1506 transitions. Second operand 3 states. [2020-09-24 17:06:46,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:46,708 INFO L93 Difference]: Finished difference Result 1343 states and 1876 transitions. [2020-09-24 17:06:46,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:46,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-09-24 17:06:46,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:46,715 INFO L225 Difference]: With dead ends: 1343 [2020-09-24 17:06:46,716 INFO L226 Difference]: Without dead ends: 1341 [2020-09-24 17:06:46,717 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 [2020-09-24 17:06:46,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-09-24 17:06:46,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1091. [2020-09-24 17:06:46,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2020-09-24 17:06:46,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1498 transitions. [2020-09-24 17:06:46,750 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1498 transitions. Word has length 82 [2020-09-24 17:06:46,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:46,751 INFO L479 AbstractCegarLoop]: Abstraction has 1091 states and 1498 transitions. [2020-09-24 17:06:46,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:46,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1498 transitions. [2020-09-24 17:06:46,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-24 17:06:46,752 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:46,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:46,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 17:06:46,753 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:46,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:46,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1659922654, now seen corresponding path program 1 times [2020-09-24 17:06:46,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:46,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903989594] [2020-09-24 17:06:46,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:46,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,828 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:46,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 17:06:46,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:46,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 17:06:46,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:46,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:46,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-24 17:06:46,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 17:06:46,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:46,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:46,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:46,862 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:46,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:46,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:46,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:46,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:46,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:46,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:46,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:46,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:46,869 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 17:06:46,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903989594] [2020-09-24 17:06:46,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:46,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:46,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800254913] [2020-09-24 17:06:46,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:46,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:46,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:46,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:46,871 INFO L87 Difference]: Start difference. First operand 1091 states and 1498 transitions. Second operand 3 states. [2020-09-24 17:06:46,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:46,894 INFO L93 Difference]: Finished difference Result 1335 states and 1852 transitions. [2020-09-24 17:06:46,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:46,895 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-09-24 17:06:46,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:46,902 INFO L225 Difference]: With dead ends: 1335 [2020-09-24 17:06:46,902 INFO L226 Difference]: Without dead ends: 1333 [2020-09-24 17:06:46,903 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 [2020-09-24 17:06:46,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2020-09-24 17:06:46,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1091. [2020-09-24 17:06:46,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2020-09-24 17:06:46,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1490 transitions. [2020-09-24 17:06:46,933 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1490 transitions. Word has length 83 [2020-09-24 17:06:46,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:46,933 INFO L479 AbstractCegarLoop]: Abstraction has 1091 states and 1490 transitions. [2020-09-24 17:06:46,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:46,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1490 transitions. [2020-09-24 17:06:46,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-24 17:06:46,935 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:46,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:46,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 17:06:46,936 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:46,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:46,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1375558424, now seen corresponding path program 1 times [2020-09-24 17:06:46,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:46,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651410190] [2020-09-24 17:06:46,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:46,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:47,009 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:47,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 17:06:47,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:47,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 17:06:47,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-24 17:06:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:06:47,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:47,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:47,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:47,038 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:47,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:47,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:47,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:47,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:47,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:47,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:47,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:47,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:47,044 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 17:06:47,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651410190] [2020-09-24 17:06:47,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:47,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:47,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185271479] [2020-09-24 17:06:47,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:47,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:47,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:47,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:47,047 INFO L87 Difference]: Start difference. First operand 1091 states and 1490 transitions. Second operand 3 states. [2020-09-24 17:06:47,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:47,086 INFO L93 Difference]: Finished difference Result 3127 states and 4308 transitions. [2020-09-24 17:06:47,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:47,086 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-09-24 17:06:47,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:47,100 INFO L225 Difference]: With dead ends: 3127 [2020-09-24 17:06:47,100 INFO L226 Difference]: Without dead ends: 2085 [2020-09-24 17:06:47,104 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 [2020-09-24 17:06:47,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2020-09-24 17:06:47,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 2083. [2020-09-24 17:06:47,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2083 states. [2020-09-24 17:06:47,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2834 transitions. [2020-09-24 17:06:47,201 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2834 transitions. Word has length 83 [2020-09-24 17:06:47,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:47,201 INFO L479 AbstractCegarLoop]: Abstraction has 2083 states and 2834 transitions. [2020-09-24 17:06:47,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:47,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2834 transitions. [2020-09-24 17:06:47,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-24 17:06:47,205 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:47,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:47,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 17:06:47,206 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:47,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:47,206 INFO L82 PathProgramCache]: Analyzing trace with hash -146869603, now seen corresponding path program 1 times [2020-09-24 17:06:47,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:47,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98011413] [2020-09-24 17:06:47,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:47,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:47,284 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:47,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 17:06:47,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:47,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 17:06:47,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 17:06:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 17:06:47,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:47,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:47,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:47,315 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:47,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:47,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:47,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:47,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:47,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:47,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:47,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:47,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:06:47,326 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 17:06:47,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98011413] [2020-09-24 17:06:47,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:47,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:47,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328993269] [2020-09-24 17:06:47,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:47,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:47,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:47,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:47,330 INFO L87 Difference]: Start difference. First operand 2083 states and 2834 transitions. Second operand 3 states. [2020-09-24 17:06:47,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:47,367 INFO L93 Difference]: Finished difference Result 2535 states and 3476 transitions. [2020-09-24 17:06:47,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:47,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-09-24 17:06:47,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:47,384 INFO L225 Difference]: With dead ends: 2535 [2020-09-24 17:06:47,384 INFO L226 Difference]: Without dead ends: 2533 [2020-09-24 17:06:47,386 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 [2020-09-24 17:06:47,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2020-09-24 17:06:47,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2083. [2020-09-24 17:06:47,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2083 states. [2020-09-24 17:06:47,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2818 transitions. [2020-09-24 17:06:47,478 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2818 transitions. Word has length 84 [2020-09-24 17:06:47,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:47,479 INFO L479 AbstractCegarLoop]: Abstraction has 2083 states and 2818 transitions. [2020-09-24 17:06:47,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:47,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2818 transitions. [2020-09-24 17:06:47,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-24 17:06:47,484 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:47,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:47,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 17:06:47,485 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:47,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:47,486 INFO L82 PathProgramCache]: Analyzing trace with hash -307116750, now seen corresponding path program 1 times [2020-09-24 17:06:47,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:47,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601995250] [2020-09-24 17:06:47,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:47,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:47,570 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:47,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 17:06:47,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:47,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-24 17:06:47,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:47,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:47,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 17:06:47,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:06:47,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:47,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:47,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:47,595 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:47,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:47,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:47,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:47,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:47,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:47,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:47,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:47,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:47,603 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 17:06:47,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601995250] [2020-09-24 17:06:47,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:47,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:47,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351863656] [2020-09-24 17:06:47,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:47,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:47,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:47,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:47,606 INFO L87 Difference]: Start difference. First operand 2083 states and 2818 transitions. Second operand 3 states. [2020-09-24 17:06:47,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:47,660 INFO L93 Difference]: Finished difference Result 6055 states and 8228 transitions. [2020-09-24 17:06:47,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:47,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-09-24 17:06:47,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:47,680 INFO L225 Difference]: With dead ends: 6055 [2020-09-24 17:06:47,680 INFO L226 Difference]: Without dead ends: 4021 [2020-09-24 17:06:47,686 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 [2020-09-24 17:06:47,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2020-09-24 17:06:47,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 4019. [2020-09-24 17:06:47,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4019 states. [2020-09-24 17:06:47,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4019 states to 4019 states and 5394 transitions. [2020-09-24 17:06:47,834 INFO L78 Accepts]: Start accepts. Automaton has 4019 states and 5394 transitions. Word has length 84 [2020-09-24 17:06:47,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:47,834 INFO L479 AbstractCegarLoop]: Abstraction has 4019 states and 5394 transitions. [2020-09-24 17:06:47,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:47,835 INFO L276 IsEmpty]: Start isEmpty. Operand 4019 states and 5394 transitions. [2020-09-24 17:06:47,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 17:06:47,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:47,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:47,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 17:06:47,841 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:47,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:47,841 INFO L82 PathProgramCache]: Analyzing trace with hash -322854350, now seen corresponding path program 1 times [2020-09-24 17:06:47,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:47,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662068592] [2020-09-24 17:06:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:47,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:47,915 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:47,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 17:06:47,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:47,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 17:06:47,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:47,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 17:06:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 17:06:47,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:47,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:47,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:47,943 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:47,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:47,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:47,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:47,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:47,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:47,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:47,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:47,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:47,950 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 17:06:47,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662068592] [2020-09-24 17:06:47,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:47,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:47,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827274502] [2020-09-24 17:06:47,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:47,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:47,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:47,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:47,952 INFO L87 Difference]: Start difference. First operand 4019 states and 5394 transitions. Second operand 3 states. [2020-09-24 17:06:47,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:47,991 INFO L93 Difference]: Finished difference Result 4855 states and 6548 transitions. [2020-09-24 17:06:47,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:47,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-09-24 17:06:47,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:48,017 INFO L225 Difference]: With dead ends: 4855 [2020-09-24 17:06:48,018 INFO L226 Difference]: Without dead ends: 4853 [2020-09-24 17:06:48,021 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 [2020-09-24 17:06:48,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4853 states. [2020-09-24 17:06:48,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4853 to 4019. [2020-09-24 17:06:48,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4019 states. [2020-09-24 17:06:48,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4019 states to 4019 states and 5362 transitions. [2020-09-24 17:06:48,155 INFO L78 Accepts]: Start accepts. Automaton has 4019 states and 5362 transitions. Word has length 85 [2020-09-24 17:06:48,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:48,156 INFO L479 AbstractCegarLoop]: Abstraction has 4019 states and 5362 transitions. [2020-09-24 17:06:48,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:48,156 INFO L276 IsEmpty]: Start isEmpty. Operand 4019 states and 5362 transitions. [2020-09-24 17:06:48,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 17:06:48,160 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:48,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:48,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 17:06:48,161 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:48,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:48,162 INFO L82 PathProgramCache]: Analyzing trace with hash -930439220, now seen corresponding path program 1 times [2020-09-24 17:06:48,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:48,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889103156] [2020-09-24 17:06:48,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:48,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:48,240 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:48,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 17:06:48,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:48,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 17:06:48,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:48,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:48,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 17:06:48,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:06:48,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:48,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:48,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:48,266 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:48,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:48,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:48,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:48,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:48,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:48,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:48,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:48,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:48,275 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 17:06:48,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889103156] [2020-09-24 17:06:48,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:48,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:48,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761570693] [2020-09-24 17:06:48,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:48,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:48,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:48,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:48,278 INFO L87 Difference]: Start difference. First operand 4019 states and 5362 transitions. Second operand 3 states. [2020-09-24 17:06:48,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:48,367 INFO L93 Difference]: Finished difference Result 11767 states and 15732 transitions. [2020-09-24 17:06:48,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:48,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-09-24 17:06:48,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:48,404 INFO L225 Difference]: With dead ends: 11767 [2020-09-24 17:06:48,405 INFO L226 Difference]: Without dead ends: 7797 [2020-09-24 17:06:48,414 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 [2020-09-24 17:06:48,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7797 states. [2020-09-24 17:06:48,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7797 to 7795. [2020-09-24 17:06:48,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7795 states. [2020-09-24 17:06:48,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7795 states to 7795 states and 10290 transitions. [2020-09-24 17:06:48,643 INFO L78 Accepts]: Start accepts. Automaton has 7795 states and 10290 transitions. Word has length 85 [2020-09-24 17:06:48,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:48,644 INFO L479 AbstractCegarLoop]: Abstraction has 7795 states and 10290 transitions. [2020-09-24 17:06:48,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:48,644 INFO L276 IsEmpty]: Start isEmpty. Operand 7795 states and 10290 transitions. [2020-09-24 17:06:48,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 17:06:48,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:48,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:48,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 17:06:48,699 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:48,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:48,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1483413839, now seen corresponding path program 1 times [2020-09-24 17:06:48,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:48,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135860821] [2020-09-24 17:06:48,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:48,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:48,769 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:48,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-24 17:06:48,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:48,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 17:06:48,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:48,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:48,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 17:06:48,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 17:06:48,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:48,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:48,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:48,791 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:48,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:48,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:48,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:48,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:48,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:48,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:48,796 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 17:06:48,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135860821] [2020-09-24 17:06:48,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:48,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:48,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10980232] [2020-09-24 17:06:48,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:48,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:48,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:48,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:48,798 INFO L87 Difference]: Start difference. First operand 7795 states and 10290 transitions. Second operand 3 states. [2020-09-24 17:06:48,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:48,889 INFO L93 Difference]: Finished difference Result 9335 states and 12340 transitions. [2020-09-24 17:06:48,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:48,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-09-24 17:06:48,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:48,911 INFO L225 Difference]: With dead ends: 9335 [2020-09-24 17:06:48,911 INFO L226 Difference]: Without dead ends: 9333 [2020-09-24 17:06:48,915 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 [2020-09-24 17:06:48,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9333 states. [2020-09-24 17:06:49,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9333 to 7795. [2020-09-24 17:06:49,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7795 states. [2020-09-24 17:06:49,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7795 states to 7795 states and 10226 transitions. [2020-09-24 17:06:49,094 INFO L78 Accepts]: Start accepts. Automaton has 7795 states and 10226 transitions. Word has length 86 [2020-09-24 17:06:49,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:49,094 INFO L479 AbstractCegarLoop]: Abstraction has 7795 states and 10226 transitions. [2020-09-24 17:06:49,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:49,094 INFO L276 IsEmpty]: Start isEmpty. Operand 7795 states and 10226 transitions. [2020-09-24 17:06:49,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 17:06:49,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:49,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:49,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 17:06:49,101 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:49,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:49,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1221401062, now seen corresponding path program 1 times [2020-09-24 17:06:49,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:49,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571217146] [2020-09-24 17:06:49,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:49,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:49,174 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:49,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-24 17:06:49,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:49,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 17:06:49,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:49,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:49,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 17:06:49,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:06:49,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:49,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:49,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:49,197 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:49,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:49,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:49,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:49,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:49,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:49,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:49,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:49,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:49,205 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 17:06:49,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571217146] [2020-09-24 17:06:49,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:49,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:49,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32336857] [2020-09-24 17:06:49,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:49,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:49,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:49,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:49,208 INFO L87 Difference]: Start difference. First operand 7795 states and 10226 transitions. Second operand 3 states. [2020-09-24 17:06:49,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:49,359 INFO L93 Difference]: Finished difference Result 22903 states and 30068 transitions. [2020-09-24 17:06:49,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:49,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-09-24 17:06:49,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:49,395 INFO L225 Difference]: With dead ends: 22903 [2020-09-24 17:06:49,395 INFO L226 Difference]: Without dead ends: 15157 [2020-09-24 17:06:49,506 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 [2020-09-24 17:06:49,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15157 states. [2020-09-24 17:06:49,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15157 to 15155. [2020-09-24 17:06:49,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15155 states. [2020-09-24 17:06:49,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15155 states to 15155 states and 19634 transitions. [2020-09-24 17:06:49,810 INFO L78 Accepts]: Start accepts. Automaton has 15155 states and 19634 transitions. Word has length 86 [2020-09-24 17:06:49,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:49,811 INFO L479 AbstractCegarLoop]: Abstraction has 15155 states and 19634 transitions. [2020-09-24 17:06:49,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:49,811 INFO L276 IsEmpty]: Start isEmpty. Operand 15155 states and 19634 transitions. [2020-09-24 17:06:49,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 17:06:49,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:49,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:49,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 17:06:49,822 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:49,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:49,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1193948038, now seen corresponding path program 1 times [2020-09-24 17:06:49,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:49,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436381721] [2020-09-24 17:06:49,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:49,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:49,890 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:49,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-24 17:06:49,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:49,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 17:06:49,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 17:06:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 17:06:49,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:49,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:49,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:49,915 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:49,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:49,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:49,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:49,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:49,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:49,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:49,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:49,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:49,921 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 17:06:49,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436381721] [2020-09-24 17:06:49,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:49,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:49,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347042075] [2020-09-24 17:06:49,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:49,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:49,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:49,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:49,924 INFO L87 Difference]: Start difference. First operand 15155 states and 19634 transitions. Second operand 3 states. [2020-09-24 17:06:50,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:50,038 INFO L93 Difference]: Finished difference Result 17975 states and 23220 transitions. [2020-09-24 17:06:50,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:50,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-09-24 17:06:50,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:50,072 INFO L225 Difference]: With dead ends: 17975 [2020-09-24 17:06:50,072 INFO L226 Difference]: Without dead ends: 17973 [2020-09-24 17:06:50,080 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 [2020-09-24 17:06:50,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17973 states. [2020-09-24 17:06:50,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17973 to 15155. [2020-09-24 17:06:50,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15155 states. [2020-09-24 17:06:50,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15155 states to 15155 states and 19506 transitions. [2020-09-24 17:06:50,475 INFO L78 Accepts]: Start accepts. Automaton has 15155 states and 19506 transitions. Word has length 87 [2020-09-24 17:06:50,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:50,475 INFO L479 AbstractCegarLoop]: Abstraction has 15155 states and 19506 transitions. [2020-09-24 17:06:50,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:50,475 INFO L276 IsEmpty]: Start isEmpty. Operand 15155 states and 19506 transitions. [2020-09-24 17:06:50,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 17:06:50,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:50,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:50,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 17:06:50,486 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:50,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:50,487 INFO L82 PathProgramCache]: Analyzing trace with hash -791026560, now seen corresponding path program 1 times [2020-09-24 17:06:50,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:50,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87260253] [2020-09-24 17:06:50,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:50,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:50,556 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:50,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-24 17:06:50,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:50,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 17:06:50,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:50,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:50,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 17:06:50,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:06:50,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:50,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:50,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:50,581 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:50,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:50,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:50,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:50,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:50,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:50,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:50,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:50,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:50,587 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 17:06:50,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87260253] [2020-09-24 17:06:50,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:50,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:50,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084062352] [2020-09-24 17:06:50,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:50,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:50,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:50,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:50,590 INFO L87 Difference]: Start difference. First operand 15155 states and 19506 transitions. Second operand 3 states. [2020-09-24 17:06:50,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:50,812 INFO L93 Difference]: Finished difference Result 44599 states and 57396 transitions. [2020-09-24 17:06:50,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:50,812 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-09-24 17:06:50,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:50,873 INFO L225 Difference]: With dead ends: 44599 [2020-09-24 17:06:50,873 INFO L226 Difference]: Without dead ends: 29493 [2020-09-24 17:06:50,913 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 [2020-09-24 17:06:50,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29493 states. [2020-09-24 17:06:51,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29493 to 29491. [2020-09-24 17:06:51,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29491 states. [2020-09-24 17:06:51,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29491 states to 29491 states and 37426 transitions. [2020-09-24 17:06:51,596 INFO L78 Accepts]: Start accepts. Automaton has 29491 states and 37426 transitions. Word has length 87 [2020-09-24 17:06:51,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:51,597 INFO L479 AbstractCegarLoop]: Abstraction has 29491 states and 37426 transitions. [2020-09-24 17:06:51,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:51,597 INFO L276 IsEmpty]: Start isEmpty. Operand 29491 states and 37426 transitions. [2020-09-24 17:06:51,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-24 17:06:51,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:51,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:51,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 17:06:51,615 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:51,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:51,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1707179323, now seen corresponding path program 1 times [2020-09-24 17:06:51,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:51,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119074996] [2020-09-24 17:06:51,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:51,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:51,685 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:51,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 17:06:51,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:51,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 17:06:51,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:51,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:51,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-24 17:06:51,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 17:06:51,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:51,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:51,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:51,710 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:51,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:51,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:51,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 17:06:51,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:51,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:51,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:51,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:51,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:51,716 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 17:06:51,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119074996] [2020-09-24 17:06:51,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:51,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:51,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3811519] [2020-09-24 17:06:51,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:51,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:51,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:51,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:51,724 INFO L87 Difference]: Start difference. First operand 29491 states and 37426 transitions. Second operand 3 states. [2020-09-24 17:06:51,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:51,968 INFO L93 Difference]: Finished difference Result 34615 states and 43572 transitions. [2020-09-24 17:06:51,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:51,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-09-24 17:06:51,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:52,036 INFO L225 Difference]: With dead ends: 34615 [2020-09-24 17:06:52,037 INFO L226 Difference]: Without dead ends: 34613 [2020-09-24 17:06:52,053 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 [2020-09-24 17:06:52,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34613 states. [2020-09-24 17:06:53,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34613 to 29491. [2020-09-24 17:06:53,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29491 states. [2020-09-24 17:06:53,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29491 states to 29491 states and 37170 transitions. [2020-09-24 17:06:53,218 INFO L78 Accepts]: Start accepts. Automaton has 29491 states and 37170 transitions. Word has length 88 [2020-09-24 17:06:53,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:53,218 INFO L479 AbstractCegarLoop]: Abstraction has 29491 states and 37170 transitions. [2020-09-24 17:06:53,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:53,219 INFO L276 IsEmpty]: Start isEmpty. Operand 29491 states and 37170 transitions. [2020-09-24 17:06:53,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-24 17:06:53,237 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:53,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:53,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 17:06:53,238 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:53,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:53,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1248226970, now seen corresponding path program 1 times [2020-09-24 17:06:53,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:53,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205654526] [2020-09-24 17:06:53,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:53,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:53,310 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:53,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 17:06:53,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:53,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 17:06:53,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-24 17:06:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:06:53,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:53,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:53,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:53,335 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:53,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:53,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:53,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:53,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:53,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:53,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:53,342 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 17:06:53,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205654526] [2020-09-24 17:06:53,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:53,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:53,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560821672] [2020-09-24 17:06:53,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:53,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:53,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:53,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:53,345 INFO L87 Difference]: Start difference. First operand 29491 states and 37170 transitions. Second operand 3 states. [2020-09-24 17:06:54,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:54,136 INFO L93 Difference]: Finished difference Result 86839 states and 109364 transitions. [2020-09-24 17:06:54,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:54,137 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-09-24 17:06:54,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:54,277 INFO L225 Difference]: With dead ends: 86839 [2020-09-24 17:06:54,278 INFO L226 Difference]: Without dead ends: 57397 [2020-09-24 17:06:54,351 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 [2020-09-24 17:06:54,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57397 states. [2020-09-24 17:06:56,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57397 to 57395. [2020-09-24 17:06:56,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57395 states. [2020-09-24 17:06:56,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57395 states to 57395 states and 71218 transitions. [2020-09-24 17:06:56,668 INFO L78 Accepts]: Start accepts. Automaton has 57395 states and 71218 transitions. Word has length 88 [2020-09-24 17:06:56,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:06:56,669 INFO L479 AbstractCegarLoop]: Abstraction has 57395 states and 71218 transitions. [2020-09-24 17:06:56,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:06:56,669 INFO L276 IsEmpty]: Start isEmpty. Operand 57395 states and 71218 transitions. [2020-09-24 17:06:56,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-24 17:06:56,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:06:56,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:06:56,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-24 17:06:56,701 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:06:56,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:06:56,701 INFO L82 PathProgramCache]: Analyzing trace with hash 40577332, now seen corresponding path program 1 times [2020-09-24 17:06:56,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:06:56,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115820334] [2020-09-24 17:06:56,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:06:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:56,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:56,781 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:56,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-24 17:06:56,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:56,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-24 17:06:56,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:06:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-24 17:06:56,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:06:56,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:56,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:06:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:06:56,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:06:56,803 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:06:56,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:06:56,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:06:56,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:06:56,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:06:56,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:06:56,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:06:56,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:06:56,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:06:56,812 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 17:06:56,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115820334] [2020-09-24 17:06:56,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:06:56,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:06:56,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491498106] [2020-09-24 17:06:56,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:06:56,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:06:56,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:06:56,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:06:56,814 INFO L87 Difference]: Start difference. First operand 57395 states and 71218 transitions. Second operand 3 states. [2020-09-24 17:06:57,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:06:57,563 INFO L93 Difference]: Finished difference Result 169015 states and 209460 transitions. [2020-09-24 17:06:57,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:06:57,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-09-24 17:06:57,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:06:57,674 INFO L225 Difference]: With dead ends: 169015 [2020-09-24 17:06:57,675 INFO L226 Difference]: Without dead ends: 85301 [2020-09-24 17:06:57,765 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 [2020-09-24 17:06:57,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85301 states. [2020-09-24 17:06:59,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85301 to 85299. [2020-09-24 17:06:59,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85299 states. [2020-09-24 17:07:01,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85299 states to 85299 states and 103218 transitions. [2020-09-24 17:07:01,628 INFO L78 Accepts]: Start accepts. Automaton has 85299 states and 103218 transitions. Word has length 89 [2020-09-24 17:07:01,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:01,628 INFO L479 AbstractCegarLoop]: Abstraction has 85299 states and 103218 transitions. [2020-09-24 17:07:01,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:07:01,628 INFO L276 IsEmpty]: Start isEmpty. Operand 85299 states and 103218 transitions. [2020-09-24 17:07:01,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-24 17:07:01,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:01,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:07:01,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-24 17:07:01,687 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:01,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:01,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1447813926, now seen corresponding path program 1 times [2020-09-24 17:07:01,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:01,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35253648] [2020-09-24 17:07:01,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:01,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:01,765 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:01,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-24 17:07:01,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:01,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 17:07:01,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:01,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:07:01,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-24 17:07:01,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 17:07:01,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:01,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:01,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:01,790 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:01,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:07:01,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:01,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:07:01,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:01,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:01,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:01,799 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 17:07:01,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35253648] [2020-09-24 17:07:01,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:07:01,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:07:01,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753168232] [2020-09-24 17:07:01,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:07:01,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:01,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:07:01,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:07:01,802 INFO L87 Difference]: Start difference. First operand 85299 states and 103218 transitions. Second operand 3 states. [2020-09-24 17:07:02,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:02,359 INFO L93 Difference]: Finished difference Result 94519 states and 112948 transitions. [2020-09-24 17:07:02,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:07:02,360 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-09-24 17:07:02,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:02,464 INFO L225 Difference]: With dead ends: 94519 [2020-09-24 17:07:02,464 INFO L226 Difference]: Without dead ends: 66613 [2020-09-24 17:07:02,512 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 [2020-09-24 17:07:02,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66613 states. [2020-09-24 17:07:03,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66613 to 57395. [2020-09-24 17:07:03,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57395 states. [2020-09-24 17:07:03,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57395 states to 57395 states and 68658 transitions. [2020-09-24 17:07:03,800 INFO L78 Accepts]: Start accepts. Automaton has 57395 states and 68658 transitions. Word has length 89 [2020-09-24 17:07:03,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:03,800 INFO L479 AbstractCegarLoop]: Abstraction has 57395 states and 68658 transitions. [2020-09-24 17:07:03,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:07:03,800 INFO L276 IsEmpty]: Start isEmpty. Operand 57395 states and 68658 transitions. [2020-09-24 17:07:03,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-24 17:07:03,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:03,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:07:03,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-24 17:07:03,816 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:03,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:03,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1997420839, now seen corresponding path program 1 times [2020-09-24 17:07:03,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:03,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862053614] [2020-09-24 17:07:03,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:03,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:03,884 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:03,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-24 17:07:03,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:03,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 17:07:03,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:03,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:07:03,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-24 17:07:03,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 17:07:03,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:03,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:03,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:03,910 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:03,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 17:07:03,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:03,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 17:07:03,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:03,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:03,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:03,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:03,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:03,919 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 17:07:03,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862053614] [2020-09-24 17:07:03,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:07:03,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 17:07:03,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010291092] [2020-09-24 17:07:03,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 17:07:03,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:03,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 17:07:03,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 17:07:03,922 INFO L87 Difference]: Start difference. First operand 57395 states and 68658 transitions. Second operand 3 states. [2020-09-24 17:07:04,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:04,205 INFO L93 Difference]: Finished difference Result 57395 states and 68658 transitions. [2020-09-24 17:07:04,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 17:07:04,205 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-09-24 17:07:04,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:04,206 INFO L225 Difference]: With dead ends: 57395 [2020-09-24 17:07:04,206 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 17:07:04,271 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 [2020-09-24 17:07:04,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 17:07:04,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 17:07:04,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 17:07:04,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 17:07:04,273 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 90 [2020-09-24 17:07:04,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:04,273 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 17:07:04,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 17:07:04,273 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 17:07:04,273 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 17:07:04,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-24 17:07:04,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 17:07:04,309 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 17:07:04,309 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 17:07:04,309 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 17:07:04,309 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 17:07:04,309 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 17:07:04,309 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 17:07:04,309 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 177) no Hoare annotation was computed. [2020-09-24 17:07:04,310 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-09-24 17:07:04,310 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 17:07:04,310 INFO L268 CegarLoopResult]: For program point L168(line 168) no Hoare annotation was computed. [2020-09-24 17:07:04,310 INFO L264 CegarLoopResult]: At program point L168-1(lines 5 177) the Hoare annotation is: false [2020-09-24 17:07:04,310 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-09-24 17:07:04,310 INFO L268 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-09-24 17:07:04,310 INFO L268 CegarLoopResult]: For program point L36-2(line 36) no Hoare annotation was computed. [2020-09-24 17:07:04,311 INFO L268 CegarLoopResult]: For program point L119(line 119) no Hoare annotation was computed. [2020-09-24 17:07:04,311 INFO L268 CegarLoopResult]: For program point L152-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 17:07:04,311 INFO L268 CegarLoopResult]: For program point L53(line 53) no Hoare annotation was computed. [2020-09-24 17:07:04,311 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-09-24 17:07:04,311 INFO L268 CegarLoopResult]: For program point L103-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 17:07:04,311 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-24 17:07:04,313 INFO L268 CegarLoopResult]: For program point L153(line 153) no Hoare annotation was computed. [2020-09-24 17:07:04,313 INFO L268 CegarLoopResult]: For program point L87-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 17:07:04,313 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 17:07:04,313 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-24 17:07:04,314 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-24 17:07:04,314 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 177) no Hoare annotation was computed. [2020-09-24 17:07:04,314 INFO L268 CegarLoopResult]: For program point L104(line 104) no Hoare annotation was computed. [2020-09-24 17:07:04,314 INFO L268 CegarLoopResult]: For program point L137-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 17:07:04,314 INFO L268 CegarLoopResult]: For program point L71(lines 71 73) no Hoare annotation was computed. [2020-09-24 17:07:04,314 INFO L268 CegarLoopResult]: For program point L71-2(lines 42 172) no Hoare annotation was computed. [2020-09-24 17:07:04,314 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-09-24 17:07:04,314 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-09-24 17:07:04,314 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-09-24 17:07:04,315 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 17:07:04,315 INFO L268 CegarLoopResult]: For program point L138(line 138) no Hoare annotation was computed. [2020-09-24 17:07:04,315 INFO L268 CegarLoopResult]: For program point L72(line 72) no Hoare annotation was computed. [2020-09-24 17:07:04,315 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 17:07:04,315 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 17:07:04,315 INFO L268 CegarLoopResult]: For program point L122-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 17:07:04,316 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-09-24 17:07:04,316 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-24 17:07:04,316 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-24 17:07:04,317 INFO L268 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2020-09-24 17:07:04,317 INFO L268 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-09-24 17:07:04,317 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 17:07:04,317 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 17:07:04,317 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-24 17:07:04,317 INFO L271 CegarLoopResult]: At program point L173(lines 5 177) the Hoare annotation is: true [2020-09-24 17:07:04,318 INFO L268 CegarLoopResult]: For program point L107-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 17:07:04,318 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-09-24 17:07:04,318 INFO L268 CegarLoopResult]: For program point L157-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 17:07:04,319 INFO L268 CegarLoopResult]: For program point L91-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 17:07:04,319 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 17:07:04,319 INFO L268 CegarLoopResult]: For program point L108(line 108) no Hoare annotation was computed. [2020-09-24 17:07:04,319 INFO L268 CegarLoopResult]: For program point L75-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 17:07:04,320 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 17:07:04,320 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 17:07:04,320 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-24 17:07:04,320 INFO L268 CegarLoopResult]: For program point L158(line 158) no Hoare annotation was computed. [2020-09-24 17:07:04,320 INFO L268 CegarLoopResult]: For program point L92(line 92) no Hoare annotation was computed. [2020-09-24 17:07:04,320 INFO L268 CegarLoopResult]: For program point L59(line 59) no Hoare annotation was computed. [2020-09-24 17:07:04,320 INFO L268 CegarLoopResult]: For program point L142-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 17:07:04,320 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-09-24 17:07:04,320 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-24 17:07:04,321 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 17:07:04,321 INFO L268 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-09-24 17:07:04,321 INFO L268 CegarLoopResult]: For program point L43-2(line 43) no Hoare annotation was computed. [2020-09-24 17:07:04,321 INFO L268 CegarLoopResult]: For program point L159(line 159) no Hoare annotation was computed. [2020-09-24 17:07:04,321 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 17:07:04,321 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-24 17:07:04,321 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-24 17:07:04,321 INFO L268 CegarLoopResult]: For program point L176(line 176) no Hoare annotation was computed. [2020-09-24 17:07:04,321 INFO L268 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-09-24 17:07:04,322 INFO L268 CegarLoopResult]: For program point L44(lines 44 46) no Hoare annotation was computed. [2020-09-24 17:07:04,322 INFO L268 CegarLoopResult]: For program point L127-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 17:07:04,322 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-09-24 17:07:04,322 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-24 17:07:04,322 INFO L268 CegarLoopResult]: For program point L144(line 144) no Hoare annotation was computed. [2020-09-24 17:07:04,322 INFO L268 CegarLoopResult]: For program point L111-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 17:07:04,322 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 17:07:04,322 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 17:07:04,323 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 17:07:04,323 INFO L268 CegarLoopResult]: For program point L128(line 128) no Hoare annotation was computed. [2020-09-24 17:07:04,323 INFO L268 CegarLoopResult]: For program point L95-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 17:07:04,323 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-09-24 17:07:04,323 INFO L268 CegarLoopResult]: For program point L79-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 17:07:04,323 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 17:07:04,323 INFO L268 CegarLoopResult]: For program point L129(line 129) no Hoare annotation was computed. [2020-09-24 17:07:04,323 INFO L268 CegarLoopResult]: For program point L162-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 17:07:04,323 INFO L268 CegarLoopResult]: For program point L96(line 96) no Hoare annotation was computed. [2020-09-24 17:07:04,324 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-09-24 17:07:04,324 INFO L268 CegarLoopResult]: For program point L63(line 63) no Hoare annotation was computed. [2020-09-24 17:07:04,325 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 17:07:04,325 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 177) the Hoare annotation is: true [2020-09-24 17:07:04,325 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-24 17:07:04,325 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-24 17:07:04,325 INFO L268 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2020-09-24 17:07:04,325 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-24 17:07:04,325 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-09-24 17:07:04,326 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 17:07:04,326 INFO L268 CegarLoopResult]: For program point L147-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 17:07:04,326 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 17:07:04,326 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 17:07:04,326 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 17:07:04,326 INFO L268 CegarLoopResult]: For program point L164(line 164) no Hoare annotation was computed. [2020-09-24 17:07:04,326 INFO L268 CegarLoopResult]: For program point L65(line 65) no Hoare annotation was computed. [2020-09-24 17:07:04,327 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-09-24 17:07:04,327 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-09-24 17:07:04,327 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 17:07:04,327 INFO L268 CegarLoopResult]: For program point L132-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 17:07:04,327 INFO L268 CegarLoopResult]: For program point L99-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 17:07:04,327 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 17:07:04,328 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-24 17:07:04,328 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-24 17:07:04,328 INFO L268 CegarLoopResult]: For program point L149(line 149) no Hoare annotation was computed. [2020-09-24 17:07:04,328 INFO L268 CegarLoopResult]: For program point L83-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 17:07:04,329 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-09-24 17:07:04,329 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-09-24 17:07:04,329 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-09-24 17:07:04,329 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-24 17:07:04,329 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-09-24 17:07:04,329 INFO L268 CegarLoopResult]: For program point L117-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 17:07:04,329 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-24 17:07:04,329 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 17:07:04,330 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 17:07:04,330 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 17:07:04,330 INFO L268 CegarLoopResult]: For program point L134(line 134) no Hoare annotation was computed. [2020-09-24 17:07:04,330 INFO L271 CegarLoopResult]: At program point L167-1(lines 42 172) the Hoare annotation is: true [2020-09-24 17:07:04,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:07:04 BoogieIcfgContainer [2020-09-24 17:07:04,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:07:04,362 INFO L168 Benchmark]: Toolchain (without parser) took 21153.81 ms. Allocated memory was 137.4 MB in the beginning and 1.5 GB in the end (delta: 1.4 GB). Free memory was 100.8 MB in the beginning and 744.4 MB in the end (delta: -643.5 MB). Peak memory consumption was 722.8 MB. Max. memory is 7.1 GB. [2020-09-24 17:07:04,362 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 17:07:04,363 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.12 ms. Allocated memory is still 137.4 MB. Free memory was 100.2 MB in the beginning and 88.9 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-09-24 17:07:04,363 INFO L168 Benchmark]: Boogie Preprocessor took 139.62 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 88.9 MB in the beginning and 178.1 MB in the end (delta: -89.2 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-24 17:07:04,365 INFO L168 Benchmark]: RCFGBuilder took 602.19 ms. Allocated memory is still 200.3 MB. Free memory was 178.1 MB in the beginning and 151.9 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-09-24 17:07:04,366 INFO L168 Benchmark]: TraceAbstraction took 20064.73 ms. Allocated memory was 200.3 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 151.2 MB in the beginning and 744.4 MB in the end (delta: -593.2 MB). Peak memory consumption was 710.2 MB. Max. memory is 7.1 GB. [2020-09-24 17:07:04,374 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 337.12 ms. Allocated memory is still 137.4 MB. Free memory was 100.2 MB in the beginning and 88.9 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.62 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 88.9 MB in the beginning and 178.1 MB in the end (delta: -89.2 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 602.19 ms. Allocated memory is still 200.3 MB. Free memory was 178.1 MB in the beginning and 151.9 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 20064.73 ms. Allocated memory was 200.3 MB in the beginning and 1.5 GB in the end (delta: 1.3 GB). Free memory was 151.2 MB in the beginning and 744.4 MB in the end (delta: -593.2 MB). Peak memory consumption was 710.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 175]: 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 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 128 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 19.8s, OverallIterations: 22, TraceHistogramMax: 1, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4343 SDtfs, 1594 SDslu, 3111 SDs, 0 SdLazy, 109 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85299occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 11.1s AutomataMinimizationTime, 22 MinimizatonAttempts, 20636 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 2057 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1859 NumberOfCodeBlocks, 1859 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1837 ConstructedInterpolants, 0 QuantifiedInterpolants, 195877 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 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...