/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.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:38:52,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:38:52,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:38:52,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-20 01:38:52,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:38:52,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:38:52,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:38:52,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:38:52,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:38:52,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:38:52,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:38:52,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:38:52,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:38:52,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:38:52,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:38:52,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:38:52,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 01:38:52,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:38:52,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:38:52,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:38:52,171 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 01:38:52,189 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:38:52,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:38:52,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:38:52,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:38:52,191 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:38:52,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:38:52,191 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:38:52,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:38:52,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:38:52,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:38:52,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:38:52,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:38:52,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:38:52,192 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:38:52,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:38:52,193 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:38:52,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:38:52,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:38:52,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:38:52,194 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:38:52,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:38:52,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:38:52,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:38:52,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:38:52,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:38:52,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:38:52,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:38:52,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:38:52,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:38:52,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 01:38:52,472 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:38:52,486 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:38:52,489 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:38:52,491 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:38:52,491 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:38:52,492 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-07-20 01:38:52,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9cebdca9/e03697a98a62431db061ee62abfe0faf/FLAGf3564642d [2020-07-20 01:38:53,110 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:38:53,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-07-20 01:38:53,130 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9cebdca9/e03697a98a62431db061ee62abfe0faf/FLAGf3564642d [2020-07-20 01:38:53,401 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9cebdca9/e03697a98a62431db061ee62abfe0faf [2020-07-20 01:38:53,413 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:38:53,416 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:38:53,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:38:53,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:38:53,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:38:53,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:38:53" (1/1) ... [2020-07-20 01:38:53,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eb7a4d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:38:53, skipping insertion in model container [2020-07-20 01:38:53,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:38:53" (1/1) ... [2020-07-20 01:38:53,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:38:53,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:38:53,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:38:53,940 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:38:54,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:38:54,202 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:38:54,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:38:54 WrapperNode [2020-07-20 01:38:54,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:38:54,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:38:54,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:38:54,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:38:54,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:38:54" (1/1) ... [2020-07-20 01:38:54,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:38:54" (1/1) ... [2020-07-20 01:38:54,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:38:54" (1/1) ... [2020-07-20 01:38:54,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:38:54" (1/1) ... [2020-07-20 01:38:54,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:38:54" (1/1) ... [2020-07-20 01:38:54,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:38:54" (1/1) ... [2020-07-20 01:38:54,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:38:54" (1/1) ... [2020-07-20 01:38:54,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:38:54,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:38:54,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:38:54,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:38:54,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:38:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-20 01:38:54,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:38:54,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:38:54,446 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 01:38:54,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:38:54,446 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 01:38:54,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:38:54,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:38:54,447 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 01:38:54,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:38:54,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:38:54,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:38:55,856 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:38:55,856 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 01:38:55,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:38:55 BoogieIcfgContainer [2020-07-20 01:38:55,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:38:55,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:38:55,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:38:55,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:38:55,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:38:53" (1/3) ... [2020-07-20 01:38:55,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9aa1da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:38:55, skipping insertion in model container [2020-07-20 01:38:55,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:38:54" (2/3) ... [2020-07-20 01:38:55,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9aa1da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:38:55, skipping insertion in model container [2020-07-20 01:38:55,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:38:55" (3/3) ... [2020-07-20 01:38:55,871 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label40.c [2020-07-20 01:38:55,883 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:38:55,892 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:38:55,907 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:38:55,935 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:38:55,935 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:38:55,935 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:38:55,935 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:38:55,936 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:38:55,936 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:38:55,936 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:38:55,936 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:38:55,961 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-20 01:38:55,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-20 01:38:55,970 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:38:55,972 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] [2020-07-20 01:38:55,972 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:38:55,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:38:55,979 INFO L82 PathProgramCache]: Analyzing trace with hash -576444522, now seen corresponding path program 1 times [2020-07-20 01:38:55,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:38:55,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652990466] [2020-07-20 01:38:55,990 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2e20bfef [2020-07-20 01:38:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:38:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:38:56,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:38:56,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652990466] [2020-07-20 01:38:56,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:38:56,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:38:56,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703403858] [2020-07-20 01:38:56,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 01:38:56,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:38:56,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 01:38:56,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:38:56,468 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 5 states. [2020-07-20 01:38:58,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:38:58,722 INFO L93 Difference]: Finished difference Result 730 states and 1301 transitions. [2020-07-20 01:38:58,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 01:38:58,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-07-20 01:38:58,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:38:58,762 INFO L225 Difference]: With dead ends: 730 [2020-07-20 01:38:58,762 INFO L226 Difference]: Without dead ends: 447 [2020-07-20 01:38:58,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 01:38:58,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-07-20 01:38:58,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 441. [2020-07-20 01:38:58,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-07-20 01:38:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 672 transitions. [2020-07-20 01:38:58,928 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 672 transitions. Word has length 55 [2020-07-20 01:38:58,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:38:58,930 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 672 transitions. [2020-07-20 01:38:58,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 01:38:58,931 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 672 transitions. [2020-07-20 01:38:58,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-07-20 01:38:58,949 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:38:58,950 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:38:58,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:38:58,951 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:38:58,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:38:58,952 INFO L82 PathProgramCache]: Analyzing trace with hash -913027315, now seen corresponding path program 1 times [2020-07-20 01:38:58,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:38:58,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826242197] [2020-07-20 01:38:58,953 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2e20bfef [2020-07-20 01:38:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:38:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:38:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:38:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:38:59,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826242197] [2020-07-20 01:38:59,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:38:59,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 01:38:59,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272271345] [2020-07-20 01:38:59,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 01:38:59,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:38:59,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 01:38:59,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 01:38:59,277 INFO L87 Difference]: Start difference. First operand 441 states and 672 transitions. Second operand 8 states. [2020-07-20 01:39:00,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:39:00,976 INFO L93 Difference]: Finished difference Result 1041 states and 1612 transitions. [2020-07-20 01:39:00,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 01:39:00,977 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2020-07-20 01:39:00,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:39:00,983 INFO L225 Difference]: With dead ends: 1041 [2020-07-20 01:39:00,983 INFO L226 Difference]: Without dead ends: 606 [2020-07-20 01:39:00,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-07-20 01:39:00,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-07-20 01:39:01,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 592. [2020-07-20 01:39:01,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-07-20 01:39:01,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 829 transitions. [2020-07-20 01:39:01,024 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 829 transitions. Word has length 128 [2020-07-20 01:39:01,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:39:01,025 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 829 transitions. [2020-07-20 01:39:01,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 01:39:01,026 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 829 transitions. [2020-07-20 01:39:01,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-07-20 01:39:01,029 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:39:01,029 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:39:01,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 01:39:01,029 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:39:01,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:39:01,030 INFO L82 PathProgramCache]: Analyzing trace with hash 952189433, now seen corresponding path program 1 times [2020-07-20 01:39:01,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:39:01,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756339157] [2020-07-20 01:39:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2e20bfef [2020-07-20 01:39:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 31 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:39:01,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756339157] [2020-07-20 01:39:01,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597235034] [2020-07-20 01:39:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6e11d88f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:39:01,542 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6e11d88f issued 4 check-sat command(s) [2020-07-20 01:39:01,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:39:01,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 01:39:01,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:39:01,625 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:39:01,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 01:39:01,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2020-07-20 01:39:01,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373352067] [2020-07-20 01:39:01,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 01:39:01,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:39:01,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 01:39:01,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-07-20 01:39:01,628 INFO L87 Difference]: Start difference. First operand 592 states and 829 transitions. Second operand 3 states. [2020-07-20 01:39:02,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:39:02,327 INFO L93 Difference]: Finished difference Result 1756 states and 2510 transitions. [2020-07-20 01:39:02,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 01:39:02,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-07-20 01:39:02,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:39:02,342 INFO L225 Difference]: With dead ends: 1756 [2020-07-20 01:39:02,342 INFO L226 Difference]: Without dead ends: 1170 [2020-07-20 01:39:02,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-07-20 01:39:02,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2020-07-20 01:39:02,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1023. [2020-07-20 01:39:02,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2020-07-20 01:39:02,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1444 transitions. [2020-07-20 01:39:02,415 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1444 transitions. Word has length 134 [2020-07-20 01:39:02,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:39:02,416 INFO L479 AbstractCegarLoop]: Abstraction has 1023 states and 1444 transitions. [2020-07-20 01:39:02,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 01:39:02,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1444 transitions. [2020-07-20 01:39:02,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-07-20 01:39:02,424 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:39:02,425 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:39:02,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-20 01:39:02,641 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:39:02,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:39:02,642 INFO L82 PathProgramCache]: Analyzing trace with hash -296475546, now seen corresponding path program 1 times [2020-07-20 01:39:02,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:39:02,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302221800] [2020-07-20 01:39:02,643 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2e20bfef [2020-07-20 01:39:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:39:02,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302221800] [2020-07-20 01:39:02,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:39:02,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 01:39:02,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185794179] [2020-07-20 01:39:02,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 01:39:02,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:39:02,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 01:39:02,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 01:39:02,947 INFO L87 Difference]: Start difference. First operand 1023 states and 1444 transitions. Second operand 8 states. [2020-07-20 01:39:05,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:39:05,116 INFO L93 Difference]: Finished difference Result 2370 states and 3400 transitions. [2020-07-20 01:39:05,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 01:39:05,119 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 167 [2020-07-20 01:39:05,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:39:05,129 INFO L225 Difference]: With dead ends: 2370 [2020-07-20 01:39:05,129 INFO L226 Difference]: Without dead ends: 1353 [2020-07-20 01:39:05,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-07-20 01:39:05,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2020-07-20 01:39:05,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1045. [2020-07-20 01:39:05,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1045 states. [2020-07-20 01:39:05,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1316 transitions. [2020-07-20 01:39:05,170 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1316 transitions. Word has length 167 [2020-07-20 01:39:05,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:39:05,170 INFO L479 AbstractCegarLoop]: Abstraction has 1045 states and 1316 transitions. [2020-07-20 01:39:05,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 01:39:05,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1316 transitions. [2020-07-20 01:39:05,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-07-20 01:39:05,174 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:39:05,174 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:39:05,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 01:39:05,174 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:39:05,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:39:05,175 INFO L82 PathProgramCache]: Analyzing trace with hash 528848677, now seen corresponding path program 1 times [2020-07-20 01:39:05,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:39:05,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100316298] [2020-07-20 01:39:05,176 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2e20bfef [2020-07-20 01:39:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:05,397 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:39:05,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100316298] [2020-07-20 01:39:05,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:39:05,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 01:39:05,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745542913] [2020-07-20 01:39:05,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 01:39:05,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:39:05,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 01:39:05,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-20 01:39:05,400 INFO L87 Difference]: Start difference. First operand 1045 states and 1316 transitions. Second operand 7 states. [2020-07-20 01:39:06,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:39:06,706 INFO L93 Difference]: Finished difference Result 2261 states and 2836 transitions. [2020-07-20 01:39:06,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 01:39:06,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-07-20 01:39:06,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:39:06,714 INFO L225 Difference]: With dead ends: 2261 [2020-07-20 01:39:06,714 INFO L226 Difference]: Without dead ends: 1222 [2020-07-20 01:39:06,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-07-20 01:39:06,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2020-07-20 01:39:06,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1047. [2020-07-20 01:39:06,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1047 states. [2020-07-20 01:39:06,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1272 transitions. [2020-07-20 01:39:06,750 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1272 transitions. Word has length 172 [2020-07-20 01:39:06,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:39:06,751 INFO L479 AbstractCegarLoop]: Abstraction has 1047 states and 1272 transitions. [2020-07-20 01:39:06,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 01:39:06,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1272 transitions. [2020-07-20 01:39:06,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-07-20 01:39:06,756 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:39:06,757 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:39:06,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 01:39:06,757 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:39:06,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:39:06,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1123243390, now seen corresponding path program 1 times [2020-07-20 01:39:06,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:39:06,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830589165] [2020-07-20 01:39:06,759 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2e20bfef [2020-07-20 01:39:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:07,044 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-07-20 01:39:07,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830589165] [2020-07-20 01:39:07,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279566340] [2020-07-20 01:39:07,045 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3ca481c5 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:39:07,175 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3ca481c5 issued 4 check-sat command(s) [2020-07-20 01:39:07,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:39:07,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 01:39:07,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:39:07,205 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:39:07,418 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-07-20 01:39:07,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 01:39:07,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-07-20 01:39:07,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876198200] [2020-07-20 01:39:07,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 01:39:07,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:39:07,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 01:39:07,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 01:39:07,421 INFO L87 Difference]: Start difference. First operand 1047 states and 1272 transitions. Second operand 3 states. [2020-07-20 01:39:08,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:39:08,395 INFO L93 Difference]: Finished difference Result 2672 states and 3359 transitions. [2020-07-20 01:39:08,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 01:39:08,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2020-07-20 01:39:08,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:39:08,404 INFO L225 Difference]: With dead ends: 2672 [2020-07-20 01:39:08,404 INFO L226 Difference]: Without dead ends: 1774 [2020-07-20 01:39:08,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 01:39:08,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2020-07-20 01:39:08,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1486. [2020-07-20 01:39:08,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1486 states. [2020-07-20 01:39:08,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 1809 transitions. [2020-07-20 01:39:08,450 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 1809 transitions. Word has length 237 [2020-07-20 01:39:08,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:39:08,451 INFO L479 AbstractCegarLoop]: Abstraction has 1486 states and 1809 transitions. [2020-07-20 01:39:08,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 01:39:08,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 1809 transitions. [2020-07-20 01:39:08,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-07-20 01:39:08,456 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:39:08,457 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:39:08,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:39:08,673 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:39:08,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:39:08,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1661435255, now seen corresponding path program 1 times [2020-07-20 01:39:08,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:39:08,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546826639] [2020-07-20 01:39:08,674 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2e20bfef [2020-07-20 01:39:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:09,317 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 100 proven. 65 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 01:39:09,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546826639] [2020-07-20 01:39:09,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372003522] [2020-07-20 01:39:09,319 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2f6f9c5f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:39:09,514 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2f6f9c5f issued 4 check-sat command(s) [2020-07-20 01:39:09,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:39:09,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 01:39:09,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:39:09,564 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 01:39:09,564 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:39:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:39:09,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:39:09,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 14 [2020-07-20 01:39:09,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800982562] [2020-07-20 01:39:09,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 01:39:09,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:39:09,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 01:39:09,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-07-20 01:39:09,637 INFO L87 Difference]: Start difference. First operand 1486 states and 1809 transitions. Second operand 14 states. [2020-07-20 01:39:15,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:39:15,074 INFO L93 Difference]: Finished difference Result 4349 states and 5731 transitions. [2020-07-20 01:39:15,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-20 01:39:15,075 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 242 [2020-07-20 01:39:15,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:39:15,090 INFO L225 Difference]: With dead ends: 4349 [2020-07-20 01:39:15,091 INFO L226 Difference]: Without dead ends: 3012 [2020-07-20 01:39:15,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=358, Invalid=1448, Unknown=0, NotChecked=0, Total=1806 [2020-07-20 01:39:15,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2020-07-20 01:39:15,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 2831. [2020-07-20 01:39:15,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2831 states. [2020-07-20 01:39:15,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2831 states to 2831 states and 3471 transitions. [2020-07-20 01:39:15,178 INFO L78 Accepts]: Start accepts. Automaton has 2831 states and 3471 transitions. Word has length 242 [2020-07-20 01:39:15,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:39:15,178 INFO L479 AbstractCegarLoop]: Abstraction has 2831 states and 3471 transitions. [2020-07-20 01:39:15,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 01:39:15,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2831 states and 3471 transitions. [2020-07-20 01:39:15,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-07-20 01:39:15,184 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:39:15,185 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:39:15,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:39:15,398 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:39:15,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:39:15,399 INFO L82 PathProgramCache]: Analyzing trace with hash -14922590, now seen corresponding path program 1 times [2020-07-20 01:39:15,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:39:15,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596396567] [2020-07-20 01:39:15,400 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2e20bfef [2020-07-20 01:39:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:15,798 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 100 proven. 74 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 01:39:15,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596396567] [2020-07-20 01:39:15,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808993369] [2020-07-20 01:39:15,807 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@689b40c1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:39:15,980 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@689b40c1 issued 4 check-sat command(s) [2020-07-20 01:39:15,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:39:15,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 01:39:15,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:39:16,101 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:39:16,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:39:16,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 13 [2020-07-20 01:39:16,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394551269] [2020-07-20 01:39:16,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 01:39:16,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:39:16,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 01:39:16,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-07-20 01:39:16,104 INFO L87 Difference]: Start difference. First operand 2831 states and 3471 transitions. Second operand 13 states. [2020-07-20 01:39:20,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:39:20,672 INFO L93 Difference]: Finished difference Result 7991 states and 9947 transitions. [2020-07-20 01:39:20,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-20 01:39:20,673 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 251 [2020-07-20 01:39:20,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:39:20,691 INFO L225 Difference]: With dead ends: 7991 [2020-07-20 01:39:20,691 INFO L226 Difference]: Without dead ends: 3536 [2020-07-20 01:39:20,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=309, Invalid=1097, Unknown=0, NotChecked=0, Total=1406 [2020-07-20 01:39:20,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3536 states. [2020-07-20 01:39:20,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3536 to 2813. [2020-07-20 01:39:20,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2813 states. [2020-07-20 01:39:20,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2813 states to 2813 states and 3394 transitions. [2020-07-20 01:39:20,795 INFO L78 Accepts]: Start accepts. Automaton has 2813 states and 3394 transitions. Word has length 251 [2020-07-20 01:39:20,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:39:20,795 INFO L479 AbstractCegarLoop]: Abstraction has 2813 states and 3394 transitions. [2020-07-20 01:39:20,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 01:39:20,796 INFO L276 IsEmpty]: Start isEmpty. Operand 2813 states and 3394 transitions. [2020-07-20 01:39:20,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-07-20 01:39:20,803 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:39:20,804 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:39:21,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:39:21,019 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:39:21,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:39:21,021 INFO L82 PathProgramCache]: Analyzing trace with hash 253048858, now seen corresponding path program 1 times [2020-07-20 01:39:21,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:39:21,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007856432] [2020-07-20 01:39:21,021 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2e20bfef [2020-07-20 01:39:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:39:21,700 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 177 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 01:39:21,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007856432] [2020-07-20 01:39:21,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615925334] [2020-07-20 01:39:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@56de7cb4 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:39:21,847 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@56de7cb4 issued 4 check-sat command(s) [2020-07-20 01:39:21,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:39:21,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 01:39:21,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:39:21,884 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:39:21,885 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 01:39:21,886 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 01:39:21,888 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 01:39:21,890 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 01:39:21,890 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 01:39:21,891 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 01:39:21,893 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 01:39:21,895 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 01:39:21,896 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 01:39:21,897 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 01:39:21,898 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 01:39:21,899 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 01:39:21,901 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 01:39:21,902 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 01:39:21,903 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 01:39:21,905 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 01:39:21,905 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 01:39:21,908 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:39:21,908 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 01:39:21,909 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 01:39:21,911 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 01:39:21,912 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 01:39:21,912 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 01:39:21,914 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:39:21,915 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 01:39:37,233 WARN L193 SmtUtils]: Spent 15.07 s on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-07-20 01:39:37,305 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 01:39:37,447 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 01:39:37,448 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:39:37,448 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:39:37,495 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:39:37,626 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:39:37,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:39:37,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2020-07-20 01:39:37,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596329868] [2020-07-20 01:39:37,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-20 01:39:37,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:39:37,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-20 01:39:37,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-07-20 01:39:37,629 INFO L87 Difference]: Start difference. First operand 2813 states and 3394 transitions. Second operand 17 states. [2020-07-20 01:39:38,964 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2020-07-20 01:39:54,049 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2020-07-20 01:40:15,883 WARN L193 SmtUtils]: Spent 11.60 s on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-07-20 01:40:16,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:40:16,729 INFO L93 Difference]: Finished difference Result 6095 states and 7429 transitions. [2020-07-20 01:40:16,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-20 01:40:16,731 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 287 [2020-07-20 01:40:16,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:40:16,746 INFO L225 Difference]: With dead ends: 6095 [2020-07-20 01:40:16,746 INFO L226 Difference]: Without dead ends: 3431 [2020-07-20 01:40:16,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 283 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=471, Invalid=1598, Unknown=1, NotChecked=0, Total=2070 [2020-07-20 01:40:16,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2020-07-20 01:40:16,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 3405. [2020-07-20 01:40:16,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3405 states. [2020-07-20 01:40:16,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3405 states to 3405 states and 4072 transitions. [2020-07-20 01:40:16,855 INFO L78 Accepts]: Start accepts. Automaton has 3405 states and 4072 transitions. Word has length 287 [2020-07-20 01:40:16,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:40:16,855 INFO L479 AbstractCegarLoop]: Abstraction has 3405 states and 4072 transitions. [2020-07-20 01:40:16,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-20 01:40:16,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3405 states and 4072 transitions. [2020-07-20 01:40:16,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-07-20 01:40:16,864 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:40:16,865 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:40:17,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:40:17,080 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:40:17,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:40:17,081 INFO L82 PathProgramCache]: Analyzing trace with hash 273888777, now seen corresponding path program 1 times [2020-07-20 01:40:17,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:40:17,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498008113] [2020-07-20 01:40:17,082 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2e20bfef [2020-07-20 01:40:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:40:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:40:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:40:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:40:17,415 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-07-20 01:40:17,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498008113] [2020-07-20 01:40:17,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921937697] [2020-07-20 01:40:17,416 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@44ac2a1e No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:40:17,576 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@44ac2a1e issued 4 check-sat command(s) [2020-07-20 01:40:17,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:40:17,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 01:40:17,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:40:17,659 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:40:17,660 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 01:40:17,661 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 01:40:17,662 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 01:40:17,662 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,663 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,664 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,665 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,667 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,667 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,669 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,670 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 01:40:17,671 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 01:40:17,671 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 01:40:17,672 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 01:40:17,673 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 01:40:17,674 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 01:40:17,675 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 01:40:17,676 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 01:40:17,678 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 01:40:17,678 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 01:40:17,679 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 01:40:17,680 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 01:40:17,681 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 01:40:17,682 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 01:40:17,683 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 01:40:17,685 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 01:40:17,685 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 01:40:17,686 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 01:40:17,687 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 01:40:17,688 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,689 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,690 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,691 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,692 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,693 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,694 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,696 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 01:40:17,696 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,697 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 01:40:17,697 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 01:40:17,699 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 01:40:17,700 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-07-20 01:40:17,701 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 01:40:17,702 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 01:40:17,702 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 01:40:17,704 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,704 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,705 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,707 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 01:40:17,707 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,708 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,709 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,710 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 01:40:17,712 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 01:40:17,713 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 01:40:17,714 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 01:40:17,714 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 01:40:17,715 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 01:40:17,716 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,717 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,718 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,719 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,720 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 01:40:17,722 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 01:40:17,722 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,723 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 01:40:17,724 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 01:40:17,725 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,725 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,726 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,728 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 01:40:17,729 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 01:40:17,730 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 01:40:17,730 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-07-20 01:40:17,732 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,732 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,733 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 01:40:17,734 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 01:40:17,735 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 01:41:02,601 WARN L193 SmtUtils]: Spent 40.20 s on a formula simplification. DAG size of input: 242 DAG size of output: 54 [2020-07-20 01:41:16,941 WARN L193 SmtUtils]: Spent 8.13 s on a formula simplification that was a NOOP. DAG size: 109 [2020-07-20 01:41:16,946 INFO L501 QuantifierPusher]: Distributing 5 conjuncts over 2 disjuncts [2020-07-20 01:41:28,210 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 28 [2020-07-20 01:41:28,506 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 6 proven. 96 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-20 01:41:28,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:41:28,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2020-07-20 01:41:28,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433486294] [2020-07-20 01:41:28,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 01:41:28,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:41:28,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 01:41:28,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=87, Unknown=10, NotChecked=0, Total=132 [2020-07-20 01:41:28,514 INFO L87 Difference]: Start difference. First operand 3405 states and 4072 transitions. Second operand 12 states. [2020-07-20 01:42:04,127 WARN L193 SmtUtils]: Spent 18.35 s on a formula simplification. DAG size of input: 141 DAG size of output: 45 [2020-07-20 01:42:04,778 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 37 [2020-07-20 01:42:12,060 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-07-20 01:42:16,318 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 58 [2020-07-20 01:42:37,693 WARN L193 SmtUtils]: Spent 14.83 s on a formula simplification. DAG size of input: 142 DAG size of output: 25 [2020-07-20 01:43:30,697 WARN L193 SmtUtils]: Spent 44.33 s on a formula simplification. DAG size of input: 133 DAG size of output: 56 [2020-07-20 01:43:43,681 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-07-20 01:44:39,387 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 7 [2020-07-20 01:45:42,642 WARN L193 SmtUtils]: Spent 44.72 s on a formula simplification that was a NOOP. DAG size: 132 [2020-07-20 01:46:34,396 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 10 [2020-07-20 01:47:43,761 WARN L193 SmtUtils]: Spent 4.49 s on a formula simplification. DAG size of input: 145 DAG size of output: 33 [2020-07-20 01:49:33,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:49:33,001 INFO L93 Difference]: Finished difference Result 9771 states and 11866 transitions. [2020-07-20 01:49:33,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-20 01:49:33,031 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 306 [2020-07-20 01:49:33,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:49:33,032 INFO L225 Difference]: With dead ends: 9771 [2020-07-20 01:49:33,032 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 01:49:33,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 251.9s TimeCoverageRelationStatistics Valid=214, Invalid=457, Unknown=31, NotChecked=0, Total=702 [2020-07-20 01:49:33,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 01:49:33,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 01:49:33,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 01:49:33,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 01:49:33,053 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 306 [2020-07-20 01:49:33,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:49:33,053 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 01:49:33,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 01:49:33,053 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 01:49:33,054 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 01:49:33,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:49:33,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 01:49:35,637 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 399 DAG size of output: 350 [2020-07-20 01:49:36,172 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 399 DAG size of output: 350 [2020-07-20 01:49:36,369 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-20 01:49:37,294 WARN L193 SmtUtils]: Spent 916.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-07-20 01:50:20,200 WARN L193 SmtUtils]: Spent 42.88 s on a formula simplification. DAG size of input: 334 DAG size of output: 62 [2020-07-20 01:50:20,451 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-07-20 01:51:56,079 WARN L193 SmtUtils]: Spent 1.59 m on a formula simplification. DAG size of input: 345 DAG size of output: 61