/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Addition03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 10:56:27,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 10:56:27,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 10:56:27,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 10:56:27,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 10:56:27,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 10:56:27,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 10:56:27,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 10:56:27,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 10:56:27,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 10:56:27,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 10:56:27,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 10:56:27,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 10:56:27,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 10:56:27,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 10:56:27,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 10:56:27,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 10:56:27,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 10:56:27,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 10:56:27,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 10:56:27,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 10:56:27,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 10:56:27,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 10:56:27,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 10:56:27,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 10:56:27,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 10:56:27,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 10:56:27,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 10:56:27,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 10:56:27,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 10:56:27,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 10:56:27,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 10:56:27,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 10:56:27,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 10:56:27,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 10:56:27,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 10:56:27,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 10:56:27,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 10:56:27,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 10:56:27,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 10:56:27,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 10:56:27,691 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 [2020-07-07 10:56:27,727 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 10:56:27,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 10:56:27,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 10:56:27,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 10:56:27,730 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 10:56:27,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 10:56:27,731 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 10:56:27,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 10:56:27,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 10:56:27,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 10:56:27,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 10:56:27,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 10:56:27,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 10:56:27,734 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 10:56:27,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 10:56:27,735 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 10:56:27,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 10:56:27,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 10:56:27,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 10:56:27,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 10:56:27,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 10:56:27,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 10:56:27,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 10:56:27,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 10:56:27,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 10:56:27,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 10:56:27,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 10:56:27,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 10:56:27,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 10:56:27,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 10:56:27,993 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 10:56:28,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 10:56:28,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 10:56:28,015 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 10:56:28,016 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 10:56:28,017 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition03-1.c [2020-07-07 10:56:28,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/622af4240/b9b779d3fd094b2d979de688cf61db55/FLAGe1e3c2241 [2020-07-07 10:56:28,532 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 10:56:28,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition03-1.c [2020-07-07 10:56:28,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/622af4240/b9b779d3fd094b2d979de688cf61db55/FLAGe1e3c2241 [2020-07-07 10:56:28,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/622af4240/b9b779d3fd094b2d979de688cf61db55 [2020-07-07 10:56:28,961 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 10:56:28,963 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 10:56:28,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 10:56:28,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 10:56:28,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 10:56:28,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 10:56:28" (1/1) ... [2020-07-07 10:56:28,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7245fb00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:28, skipping insertion in model container [2020-07-07 10:56:28,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 10:56:28" (1/1) ... [2020-07-07 10:56:28,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 10:56:29,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 10:56:29,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 10:56:29,203 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 10:56:29,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 10:56:29,236 INFO L208 MainTranslator]: Completed translation [2020-07-07 10:56:29,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:29 WrapperNode [2020-07-07 10:56:29,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 10:56:29,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 10:56:29,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 10:56:29,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 10:56:29,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:29" (1/1) ... [2020-07-07 10:56:29,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:29" (1/1) ... [2020-07-07 10:56:29,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:29" (1/1) ... [2020-07-07 10:56:29,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:29" (1/1) ... [2020-07-07 10:56:29,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:29" (1/1) ... [2020-07-07 10:56:29,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:29" (1/1) ... [2020-07-07 10:56:29,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:29" (1/1) ... [2020-07-07 10:56:29,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 10:56:29,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 10:56:29,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 10:56:29,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 10:56:29,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:29" (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 [2020-07-07 10:56:29,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 10:56:29,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 10:56:29,404 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-07-07 10:56:29,405 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 10:56:29,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 10:56:29,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 10:56:29,405 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-07-07 10:56:29,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 10:56:29,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 10:56:29,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 10:56:29,596 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 10:56:29,597 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 10:56:29,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 10:56:29 BoogieIcfgContainer [2020-07-07 10:56:29,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 10:56:29,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 10:56:29,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 10:56:29,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 10:56:29,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 10:56:28" (1/3) ... [2020-07-07 10:56:29,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784188e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 10:56:29, skipping insertion in model container [2020-07-07 10:56:29,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:29" (2/3) ... [2020-07-07 10:56:29,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784188e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 10:56:29, skipping insertion in model container [2020-07-07 10:56:29,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 10:56:29" (3/3) ... [2020-07-07 10:56:29,608 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2020-07-07 10:56:29,619 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 10:56:29,625 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 10:56:29,638 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 10:56:29,661 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 10:56:29,662 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 10:56:29,662 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 10:56:29,662 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 10:56:29,662 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 10:56:29,662 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 10:56:29,662 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 10:56:29,663 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 10:56:29,684 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-07 10:56:29,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-07 10:56:29,691 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:29,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:29,692 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:29,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:29,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1540493149, now seen corresponding path program 1 times [2020-07-07 10:56:29,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:29,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852670230] [2020-07-07 10:56:29,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 10:56:29,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852670230] [2020-07-07 10:56:29,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:56:29,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 10:56:29,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256705248] [2020-07-07 10:56:29,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 10:56:29,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:29,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 10:56:29,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 10:56:29,942 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-07-07 10:56:30,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:30,095 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-07-07 10:56:30,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 10:56:30,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-07 10:56:30,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:30,107 INFO L225 Difference]: With dead ends: 36 [2020-07-07 10:56:30,107 INFO L226 Difference]: Without dead ends: 22 [2020-07-07 10:56:30,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 10:56:30,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-07 10:56:30,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-07 10:56:30,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-07 10:56:30,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2020-07-07 10:56:30,156 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 13 [2020-07-07 10:56:30,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:30,156 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-07-07 10:56:30,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 10:56:30,157 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-07-07 10:56:30,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-07 10:56:30,159 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:30,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:30,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 10:56:30,160 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:30,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:30,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1700112874, now seen corresponding path program 1 times [2020-07-07 10:56:30,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:30,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706422983] [2020-07-07 10:56:30,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:30,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 10:56:30,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706422983] [2020-07-07 10:56:30,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:56:30,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 10:56:30,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855351205] [2020-07-07 10:56:30,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 10:56:30,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:30,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 10:56:30,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-07 10:56:30,247 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 4 states. [2020-07-07 10:56:30,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:30,297 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2020-07-07 10:56:30,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 10:56:30,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-07-07 10:56:30,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:30,299 INFO L225 Difference]: With dead ends: 32 [2020-07-07 10:56:30,299 INFO L226 Difference]: Without dead ends: 24 [2020-07-07 10:56:30,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-07 10:56:30,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-07 10:56:30,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-07-07 10:56:30,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-07 10:56:30,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-07-07 10:56:30,309 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2020-07-07 10:56:30,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:30,310 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-07-07 10:56:30,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 10:56:30,310 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-07-07 10:56:30,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 10:56:30,311 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:30,312 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:30,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 10:56:30,312 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:30,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:30,313 INFO L82 PathProgramCache]: Analyzing trace with hash -35294164, now seen corresponding path program 1 times [2020-07-07 10:56:30,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:30,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965794147] [2020-07-07 10:56:30,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:30,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-07 10:56:30,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965794147] [2020-07-07 10:56:30,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856778597] [2020-07-07 10:56:30,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-07 10:56:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:30,477 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-07 10:56:30,483 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:30,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-07 10:56:30,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:30,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-07 10:56:30,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652925380] [2020-07-07 10:56:30,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 10:56:30,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:30,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 10:56:30,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-07 10:56:30,551 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states. [2020-07-07 10:56:30,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:30,742 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2020-07-07 10:56:30,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-07 10:56:30,743 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-07-07 10:56:30,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:30,745 INFO L225 Difference]: With dead ends: 52 [2020-07-07 10:56:30,745 INFO L226 Difference]: Without dead ends: 34 [2020-07-07 10:56:30,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-07-07 10:56:30,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-07 10:56:30,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-07-07 10:56:30,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-07 10:56:30,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2020-07-07 10:56:30,767 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 20 [2020-07-07 10:56:30,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:30,768 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2020-07-07 10:56:30,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 10:56:30,768 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2020-07-07 10:56:30,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-07 10:56:30,773 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:30,773 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:30,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-07 10:56:30,981 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:30,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:30,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1261456781, now seen corresponding path program 2 times [2020-07-07 10:56:30,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:30,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298421363] [2020-07-07 10:56:30,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:31,183 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-07 10:56:31,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298421363] [2020-07-07 10:56:31,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217618554] [2020-07-07 10:56:31,184 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-07-07 10:56:31,228 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 10:56:31,228 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:31,229 INFO L264 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-07 10:56:31,231 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:31,267 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-07 10:56:31,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:31,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-07-07 10:56:31,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777905554] [2020-07-07 10:56:31,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 10:56:31,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:31,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 10:56:31,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-07 10:56:31,270 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 9 states. [2020-07-07 10:56:31,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:31,402 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2020-07-07 10:56:31,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 10:56:31,403 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-07-07 10:56:31,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:31,405 INFO L225 Difference]: With dead ends: 41 [2020-07-07 10:56:31,405 INFO L226 Difference]: Without dead ends: 37 [2020-07-07 10:56:31,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-07-07 10:56:31,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-07 10:56:31,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-07-07 10:56:31,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-07 10:56:31,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2020-07-07 10:56:31,415 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 27 [2020-07-07 10:56:31,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:31,415 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2020-07-07 10:56:31,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 10:56:31,415 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2020-07-07 10:56:31,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-07 10:56:31,417 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:31,417 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:31,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:31,631 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:31,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:31,632 INFO L82 PathProgramCache]: Analyzing trace with hash 2131329174, now seen corresponding path program 3 times [2020-07-07 10:56:31,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:31,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569292955] [2020-07-07 10:56:31,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:31,811 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-07 10:56:31,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569292955] [2020-07-07 10:56:31,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983540645] [2020-07-07 10:56:31,812 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-07-07 10:56:31,844 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-07-07 10:56:31,845 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:31,846 INFO L264 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-07 10:56:31,848 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-07 10:56:31,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:31,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-07-07 10:56:31,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128489077] [2020-07-07 10:56:31,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 10:56:31,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:31,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 10:56:31,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-07-07 10:56:31,890 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 10 states. [2020-07-07 10:56:32,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:32,066 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-07-07 10:56:32,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-07 10:56:32,068 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-07-07 10:56:32,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:32,071 INFO L225 Difference]: With dead ends: 44 [2020-07-07 10:56:32,073 INFO L226 Difference]: Without dead ends: 40 [2020-07-07 10:56:32,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-07-07 10:56:32,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-07 10:56:32,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-07-07 10:56:32,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-07 10:56:32,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-07-07 10:56:32,088 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 34 [2020-07-07 10:56:32,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:32,089 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-07-07 10:56:32,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 10:56:32,092 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-07-07 10:56:32,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-07 10:56:32,095 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:32,096 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:32,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:32,312 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:32,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:32,312 INFO L82 PathProgramCache]: Analyzing trace with hash -867295607, now seen corresponding path program 4 times [2020-07-07 10:56:32,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:32,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015679717] [2020-07-07 10:56:32,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-07-07 10:56:32,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015679717] [2020-07-07 10:56:32,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735844309] [2020-07-07 10:56:32,553 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2020-07-07 10:56:32,601 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 10:56:32,602 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:32,603 INFO L264 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-07 10:56:32,611 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:32,664 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-07-07 10:56:32,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:32,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-07-07 10:56:32,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615074217] [2020-07-07 10:56:32,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 10:56:32,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:32,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 10:56:32,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-07-07 10:56:32,667 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 11 states. [2020-07-07 10:56:32,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:32,842 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-07-07 10:56:32,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 10:56:32,842 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-07-07 10:56:32,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:32,844 INFO L225 Difference]: With dead ends: 47 [2020-07-07 10:56:32,844 INFO L226 Difference]: Without dead ends: 43 [2020-07-07 10:56:32,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-07-07 10:56:32,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-07 10:56:32,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-07-07 10:56:32,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-07 10:56:32,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-07-07 10:56:32,853 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 41 [2020-07-07 10:56:32,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:32,853 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-07-07 10:56:32,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 10:56:32,853 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-07-07 10:56:32,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-07 10:56:32,855 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:32,855 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:33,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:33,070 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:33,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:33,070 INFO L82 PathProgramCache]: Analyzing trace with hash -943688704, now seen corresponding path program 5 times [2020-07-07 10:56:33,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:33,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544280896] [2020-07-07 10:56:33,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-07-07 10:56:33,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544280896] [2020-07-07 10:56:33,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302402890] [2020-07-07 10:56:33,248 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-07-07 10:56:33,296 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-07-07 10:56:33,297 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:33,298 INFO L264 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-07 10:56:33,301 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:33,344 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-07-07 10:56:33,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:33,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-07-07 10:56:33,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004567708] [2020-07-07 10:56:33,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 10:56:33,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:33,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 10:56:33,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-07-07 10:56:33,347 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 12 states. [2020-07-07 10:56:33,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:33,522 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2020-07-07 10:56:33,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-07 10:56:33,522 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-07-07 10:56:33,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:33,524 INFO L225 Difference]: With dead ends: 50 [2020-07-07 10:56:33,524 INFO L226 Difference]: Without dead ends: 46 [2020-07-07 10:56:33,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-07-07 10:56:33,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-07 10:56:33,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-07-07 10:56:33,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-07 10:56:33,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2020-07-07 10:56:33,533 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 48 [2020-07-07 10:56:33,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:33,533 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2020-07-07 10:56:33,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 10:56:33,533 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-07-07 10:56:33,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-07 10:56:33,535 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:33,535 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:33,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-07-07 10:56:33,754 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:33,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:33,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1959654303, now seen corresponding path program 6 times [2020-07-07 10:56:33,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:33,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049381218] [2020-07-07 10:56:33,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:33,960 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-07-07 10:56:33,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049381218] [2020-07-07 10:56:33,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107163890] [2020-07-07 10:56:33,961 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-07-07 10:56:34,011 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-07-07 10:56:34,011 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:34,012 INFO L264 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-07 10:56:34,015 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:34,062 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-07-07 10:56:34,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:34,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-07-07 10:56:34,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747695071] [2020-07-07 10:56:34,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 10:56:34,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:34,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 10:56:34,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-07-07 10:56:34,066 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 13 states. [2020-07-07 10:56:34,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:34,258 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2020-07-07 10:56:34,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 10:56:34,258 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-07-07 10:56:34,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:34,260 INFO L225 Difference]: With dead ends: 53 [2020-07-07 10:56:34,260 INFO L226 Difference]: Without dead ends: 49 [2020-07-07 10:56:34,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-07-07 10:56:34,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-07 10:56:34,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-07-07 10:56:34,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-07 10:56:34,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-07-07 10:56:34,276 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 55 [2020-07-07 10:56:34,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:34,276 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-07-07 10:56:34,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 10:56:34,276 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-07-07 10:56:34,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-07 10:56:34,278 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:34,279 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:34,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:34,480 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:34,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:34,481 INFO L82 PathProgramCache]: Analyzing trace with hash 75083370, now seen corresponding path program 7 times [2020-07-07 10:56:34,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:34,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447247531] [2020-07-07 10:56:34,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:34,712 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-07-07 10:56:34,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447247531] [2020-07-07 10:56:34,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66097532] [2020-07-07 10:56:34,713 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:34,756 INFO L264 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-07 10:56:34,759 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:34,803 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-07-07 10:56:34,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:34,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2020-07-07 10:56:34,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915827724] [2020-07-07 10:56:34,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 10:56:34,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:34,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 10:56:34,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-07-07 10:56:34,806 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 14 states. [2020-07-07 10:56:34,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:34,973 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-07-07 10:56:34,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 10:56:34,973 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-07-07 10:56:34,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:34,974 INFO L225 Difference]: With dead ends: 56 [2020-07-07 10:56:34,975 INFO L226 Difference]: Without dead ends: 52 [2020-07-07 10:56:34,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-07-07 10:56:34,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-07 10:56:34,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-07-07 10:56:34,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-07 10:56:34,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-07-07 10:56:34,983 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 62 [2020-07-07 10:56:34,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:34,983 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-07-07 10:56:34,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 10:56:34,983 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-07-07 10:56:34,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-07-07 10:56:34,985 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:34,985 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:35,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:35,199 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:35,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:35,200 INFO L82 PathProgramCache]: Analyzing trace with hash 980406709, now seen corresponding path program 8 times [2020-07-07 10:56:35,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:35,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657452622] [2020-07-07 10:56:35,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:35,480 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-07-07 10:56:35,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657452622] [2020-07-07 10:56:35,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870560742] [2020-07-07 10:56:35,481 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:35,531 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 10:56:35,531 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:35,533 INFO L264 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-07 10:56:35,536 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:35,582 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-07-07 10:56:35,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:35,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-07-07 10:56:35,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729747331] [2020-07-07 10:56:35,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 10:56:35,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:35,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 10:56:35,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-07-07 10:56:35,585 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 15 states. [2020-07-07 10:56:35,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:35,765 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-07-07 10:56:35,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 10:56:35,765 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2020-07-07 10:56:35,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:35,766 INFO L225 Difference]: With dead ends: 59 [2020-07-07 10:56:35,766 INFO L226 Difference]: Without dead ends: 55 [2020-07-07 10:56:35,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-07-07 10:56:35,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-07 10:56:35,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-07-07 10:56:35,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-07 10:56:35,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-07-07 10:56:35,774 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 69 [2020-07-07 10:56:35,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:35,775 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-07-07 10:56:35,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 10:56:35,775 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-07-07 10:56:35,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-07-07 10:56:35,776 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:35,776 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:35,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-07 10:56:35,991 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:35,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:35,991 INFO L82 PathProgramCache]: Analyzing trace with hash -654012460, now seen corresponding path program 9 times [2020-07-07 10:56:35,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:35,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213383575] [2020-07-07 10:56:35,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:36,310 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-07-07 10:56:36,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213383575] [2020-07-07 10:56:36,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472011191] [2020-07-07 10:56:36,311 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:36,363 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-07-07 10:56:36,363 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:36,364 INFO L264 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-07 10:56:36,370 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:36,453 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-07-07 10:56:36,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:36,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2020-07-07 10:56:36,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216933922] [2020-07-07 10:56:36,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-07 10:56:36,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:36,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-07 10:56:36,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-07-07 10:56:36,455 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 16 states. [2020-07-07 10:56:36,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:36,683 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2020-07-07 10:56:36,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-07 10:56:36,683 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 76 [2020-07-07 10:56:36,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:36,686 INFO L225 Difference]: With dead ends: 62 [2020-07-07 10:56:36,686 INFO L226 Difference]: Without dead ends: 58 [2020-07-07 10:56:36,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702 [2020-07-07 10:56:36,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-07 10:56:36,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-07-07 10:56:36,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-07 10:56:36,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2020-07-07 10:56:36,702 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 76 [2020-07-07 10:56:36,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:36,703 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2020-07-07 10:56:36,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-07 10:56:36,703 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2020-07-07 10:56:36,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-07 10:56:36,706 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:36,706 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:36,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:36,921 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:36,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:36,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1057728309, now seen corresponding path program 10 times [2020-07-07 10:56:36,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:36,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326439039] [2020-07-07 10:56:36,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-07-07 10:56:37,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326439039] [2020-07-07 10:56:37,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537777593] [2020-07-07 10:56:37,320 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:37,374 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 10:56:37,374 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:37,376 INFO L264 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-07 10:56:37,379 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:37,430 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2020-07-07 10:56:37,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:37,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-07-07 10:56:37,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783393898] [2020-07-07 10:56:37,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-07 10:56:37,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:37,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-07 10:56:37,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2020-07-07 10:56:37,433 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 17 states. [2020-07-07 10:56:37,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:37,647 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2020-07-07 10:56:37,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-07 10:56:37,648 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 83 [2020-07-07 10:56:37,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:37,649 INFO L225 Difference]: With dead ends: 65 [2020-07-07 10:56:37,649 INFO L226 Difference]: Without dead ends: 61 [2020-07-07 10:56:37,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2020-07-07 10:56:37,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-07 10:56:37,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-07-07 10:56:37,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-07 10:56:37,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2020-07-07 10:56:37,656 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 83 [2020-07-07 10:56:37,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:37,656 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2020-07-07 10:56:37,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-07 10:56:37,656 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2020-07-07 10:56:37,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-07-07 10:56:37,657 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:37,658 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:37,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:37,859 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:37,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:37,860 INFO L82 PathProgramCache]: Analyzing trace with hash -2104461250, now seen corresponding path program 11 times [2020-07-07 10:56:37,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:37,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927967082] [2020-07-07 10:56:37,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:38,315 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-07-07 10:56:38,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927967082] [2020-07-07 10:56:38,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998713788] [2020-07-07 10:56:38,315 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:38,366 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-07-07 10:56:38,367 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:38,368 INFO L264 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-07 10:56:38,371 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:38,433 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2020-07-07 10:56:38,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:38,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-07-07 10:56:38,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696177085] [2020-07-07 10:56:38,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-07 10:56:38,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:38,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-07 10:56:38,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2020-07-07 10:56:38,435 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 18 states. [2020-07-07 10:56:38,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:38,688 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-07-07 10:56:38,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-07 10:56:38,688 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 90 [2020-07-07 10:56:38,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:38,690 INFO L225 Difference]: With dead ends: 68 [2020-07-07 10:56:38,690 INFO L226 Difference]: Without dead ends: 64 [2020-07-07 10:56:38,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=597, Unknown=0, NotChecked=0, Total=930 [2020-07-07 10:56:38,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-07 10:56:38,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-07-07 10:56:38,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-07 10:56:38,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2020-07-07 10:56:38,708 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 90 [2020-07-07 10:56:38,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:38,709 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2020-07-07 10:56:38,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-07 10:56:38,709 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2020-07-07 10:56:38,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-07-07 10:56:38,713 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:38,713 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:38,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-07-07 10:56:38,915 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:38,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:38,915 INFO L82 PathProgramCache]: Analyzing trace with hash 565979361, now seen corresponding path program 12 times [2020-07-07 10:56:38,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:38,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080641201] [2020-07-07 10:56:38,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:39,395 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-07-07 10:56:39,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080641201] [2020-07-07 10:56:39,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852412484] [2020-07-07 10:56:39,396 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:39,461 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-07-07 10:56:39,462 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:39,463 INFO L264 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 28 conjunts are in the unsatisfiable core [2020-07-07 10:56:39,467 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:39,524 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-07-07 10:56:39,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:39,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-07-07 10:56:39,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780311440] [2020-07-07 10:56:39,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-07 10:56:39,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:39,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-07 10:56:39,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2020-07-07 10:56:39,529 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand 19 states. [2020-07-07 10:56:39,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:39,784 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2020-07-07 10:56:39,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-07 10:56:39,785 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 97 [2020-07-07 10:56:39,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:39,786 INFO L225 Difference]: With dead ends: 71 [2020-07-07 10:56:39,786 INFO L226 Difference]: Without dead ends: 67 [2020-07-07 10:56:39,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=379, Invalid=677, Unknown=0, NotChecked=0, Total=1056 [2020-07-07 10:56:39,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-07 10:56:39,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2020-07-07 10:56:39,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-07 10:56:39,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-07-07 10:56:39,797 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 97 [2020-07-07 10:56:39,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:39,797 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-07-07 10:56:39,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-07 10:56:39,797 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-07-07 10:56:39,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-07-07 10:56:39,800 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:39,800 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:40,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-07-07 10:56:40,014 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:40,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:40,015 INFO L82 PathProgramCache]: Analyzing trace with hash -106117208, now seen corresponding path program 13 times [2020-07-07 10:56:40,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:40,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565344485] [2020-07-07 10:56:40,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,517 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2020-07-07 10:56:40,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565344485] [2020-07-07 10:56:40,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806982351] [2020-07-07 10:56:40,518 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,567 INFO L264 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 30 conjunts are in the unsatisfiable core [2020-07-07 10:56:40,569 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2020-07-07 10:56:40,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:40,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-07-07 10:56:40,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460179710] [2020-07-07 10:56:40,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-07 10:56:40,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:40,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-07 10:56:40,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2020-07-07 10:56:40,624 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 20 states. [2020-07-07 10:56:40,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:40,909 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2020-07-07 10:56:40,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-07 10:56:40,910 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 104 [2020-07-07 10:56:40,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:40,911 INFO L225 Difference]: With dead ends: 74 [2020-07-07 10:56:40,911 INFO L226 Difference]: Without dead ends: 70 [2020-07-07 10:56:40,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=428, Invalid=762, Unknown=0, NotChecked=0, Total=1190 [2020-07-07 10:56:40,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-07 10:56:40,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-07-07 10:56:40,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-07 10:56:40,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2020-07-07 10:56:40,924 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 104 [2020-07-07 10:56:40,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:40,924 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2020-07-07 10:56:40,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-07 10:56:40,925 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2020-07-07 10:56:40,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-07-07 10:56:40,926 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:40,926 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:41,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-07-07 10:56:41,141 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:41,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:41,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1237836279, now seen corresponding path program 14 times [2020-07-07 10:56:41,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:41,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249612672] [2020-07-07 10:56:41,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,705 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-07-07 10:56:41,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249612672] [2020-07-07 10:56:41,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612151609] [2020-07-07 10:56:41,706 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:41,766 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 10:56:41,767 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:41,768 INFO L264 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjunts are in the unsatisfiable core [2020-07-07 10:56:41,771 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:41,839 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-07-07 10:56:41,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:41,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-07-07 10:56:41,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388569829] [2020-07-07 10:56:41,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-07 10:56:41,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:41,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-07 10:56:41,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=260, Unknown=0, NotChecked=0, Total=420 [2020-07-07 10:56:41,843 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 21 states. [2020-07-07 10:56:42,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:42,140 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2020-07-07 10:56:42,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-07 10:56:42,141 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 111 [2020-07-07 10:56:42,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:42,142 INFO L225 Difference]: With dead ends: 77 [2020-07-07 10:56:42,143 INFO L226 Difference]: Without dead ends: 73 [2020-07-07 10:56:42,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=480, Invalid=852, Unknown=0, NotChecked=0, Total=1332 [2020-07-07 10:56:42,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-07 10:56:42,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-07-07 10:56:42,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-07-07 10:56:42,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2020-07-07 10:56:42,150 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 111 [2020-07-07 10:56:42,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:42,150 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2020-07-07 10:56:42,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-07 10:56:42,151 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2020-07-07 10:56:42,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-07-07 10:56:42,152 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:42,152 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:42,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:42,368 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:42,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:42,369 INFO L82 PathProgramCache]: Analyzing trace with hash 340319762, now seen corresponding path program 15 times [2020-07-07 10:56:42,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:42,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207162793] [2020-07-07 10:56:42,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,120 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2020-07-07 10:56:43,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207162793] [2020-07-07 10:56:43,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269447299] [2020-07-07 10:56:43,121 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:43,202 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-07-07 10:56:43,202 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:43,204 INFO L264 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 34 conjunts are in the unsatisfiable core [2020-07-07 10:56:43,207 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:43,281 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2020-07-07 10:56:43,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:43,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-07-07 10:56:43,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422330337] [2020-07-07 10:56:43,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-07 10:56:43,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:43,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-07 10:56:43,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=284, Unknown=0, NotChecked=0, Total=462 [2020-07-07 10:56:43,284 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 22 states. [2020-07-07 10:56:43,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:43,569 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-07-07 10:56:43,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-07 10:56:43,570 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 118 [2020-07-07 10:56:43,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:43,571 INFO L225 Difference]: With dead ends: 80 [2020-07-07 10:56:43,571 INFO L226 Difference]: Without dead ends: 76 [2020-07-07 10:56:43,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=535, Invalid=947, Unknown=0, NotChecked=0, Total=1482 [2020-07-07 10:56:43,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-07 10:56:43,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-07-07 10:56:43,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-07-07 10:56:43,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-07-07 10:56:43,577 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 118 [2020-07-07 10:56:43,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:43,577 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-07-07 10:56:43,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-07 10:56:43,578 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-07-07 10:56:43,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-07-07 10:56:43,579 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:43,579 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:43,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-07-07 10:56:43,780 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:43,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:43,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1471685645, now seen corresponding path program 16 times [2020-07-07 10:56:43,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:43,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044288689] [2020-07-07 10:56:43,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,616 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2020-07-07 10:56:44,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044288689] [2020-07-07 10:56:44,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498181451] [2020-07-07 10:56:44,617 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:44,701 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 10:56:44,701 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:44,703 INFO L264 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 36 conjunts are in the unsatisfiable core [2020-07-07 10:56:44,706 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:44,794 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2020-07-07 10:56:44,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:44,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-07-07 10:56:44,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655103347] [2020-07-07 10:56:44,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-07 10:56:44,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:44,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-07 10:56:44,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2020-07-07 10:56:44,797 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 23 states. [2020-07-07 10:56:45,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:45,132 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2020-07-07 10:56:45,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-07 10:56:45,132 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 125 [2020-07-07 10:56:45,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:45,133 INFO L225 Difference]: With dead ends: 83 [2020-07-07 10:56:45,133 INFO L226 Difference]: Without dead ends: 79 [2020-07-07 10:56:45,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=593, Invalid=1047, Unknown=0, NotChecked=0, Total=1640 [2020-07-07 10:56:45,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-07-07 10:56:45,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-07-07 10:56:45,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-07 10:56:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2020-07-07 10:56:45,139 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 125 [2020-07-07 10:56:45,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:45,140 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2020-07-07 10:56:45,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-07 10:56:45,140 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2020-07-07 10:56:45,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-07-07 10:56:45,141 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:45,142 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:45,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-07-07 10:56:45,343 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:45,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:45,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1481368708, now seen corresponding path program 17 times [2020-07-07 10:56:45,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:45,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178527701] [2020-07-07 10:56:45,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2020-07-07 10:56:46,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178527701] [2020-07-07 10:56:46,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904521849] [2020-07-07 10:56:46,244 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:46,347 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-07-07 10:56:46,347 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:46,350 INFO L264 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 38 conjunts are in the unsatisfiable core [2020-07-07 10:56:46,354 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2020-07-07 10:56:46,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:46,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 24 [2020-07-07 10:56:46,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932618308] [2020-07-07 10:56:46,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-07 10:56:46,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:46,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-07 10:56:46,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=335, Unknown=0, NotChecked=0, Total=552 [2020-07-07 10:56:46,454 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 24 states. [2020-07-07 10:56:46,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:46,795 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2020-07-07 10:56:46,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-07 10:56:46,796 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 132 [2020-07-07 10:56:46,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:46,797 INFO L225 Difference]: With dead ends: 86 [2020-07-07 10:56:46,797 INFO L226 Difference]: Without dead ends: 82 [2020-07-07 10:56:46,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=654, Invalid=1152, Unknown=0, NotChecked=0, Total=1806 [2020-07-07 10:56:46,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-07 10:56:46,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-07-07 10:56:46,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-07 10:56:46,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2020-07-07 10:56:46,804 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 132 [2020-07-07 10:56:46,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:46,804 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2020-07-07 10:56:46,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-07 10:56:46,804 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2020-07-07 10:56:46,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-07-07 10:56:46,806 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:46,806 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:47,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:47,019 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:47,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:47,019 INFO L82 PathProgramCache]: Analyzing trace with hash -103968989, now seen corresponding path program 18 times [2020-07-07 10:56:47,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:47,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603035101] [2020-07-07 10:56:47,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:47,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-07-07 10:56:47,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603035101] [2020-07-07 10:56:47,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644459733] [2020-07-07 10:56:47,928 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:48,035 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-07-07 10:56:48,035 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:48,039 INFO L264 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 40 conjunts are in the unsatisfiable core [2020-07-07 10:56:48,043 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:48,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-07-07 10:56:48,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:48,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-07-07 10:56:48,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093111035] [2020-07-07 10:56:48,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-07 10:56:48,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:48,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-07 10:56:48,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=362, Unknown=0, NotChecked=0, Total=600 [2020-07-07 10:56:48,141 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 25 states. [2020-07-07 10:56:48,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:48,483 INFO L93 Difference]: Finished difference Result 89 states and 99 transitions. [2020-07-07 10:56:48,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-07 10:56:48,484 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 139 [2020-07-07 10:56:48,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:48,485 INFO L225 Difference]: With dead ends: 89 [2020-07-07 10:56:48,485 INFO L226 Difference]: Without dead ends: 85 [2020-07-07 10:56:48,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=718, Invalid=1262, Unknown=0, NotChecked=0, Total=1980 [2020-07-07 10:56:48,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-07-07 10:56:48,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2020-07-07 10:56:48,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-07 10:56:48,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-07-07 10:56:48,492 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 139 [2020-07-07 10:56:48,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:48,492 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-07-07 10:56:48,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-07 10:56:48,493 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-07-07 10:56:48,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-07-07 10:56:48,494 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:48,494 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:48,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:48,710 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:48,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:48,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1432494106, now seen corresponding path program 19 times [2020-07-07 10:56:48,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:48,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950651626] [2020-07-07 10:56:48,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2020-07-07 10:56:49,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950651626] [2020-07-07 10:56:49,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341851528] [2020-07-07 10:56:49,615 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,685 INFO L264 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 42 conjunts are in the unsatisfiable core [2020-07-07 10:56:49,688 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2020-07-07 10:56:49,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:49,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-07-07 10:56:49,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716874385] [2020-07-07 10:56:49,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-07 10:56:49,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:49,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-07 10:56:49,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=390, Unknown=0, NotChecked=0, Total=650 [2020-07-07 10:56:49,762 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 26 states. [2020-07-07 10:56:50,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:50,099 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-07-07 10:56:50,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-07 10:56:50,100 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 146 [2020-07-07 10:56:50,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:50,101 INFO L225 Difference]: With dead ends: 92 [2020-07-07 10:56:50,101 INFO L226 Difference]: Without dead ends: 88 [2020-07-07 10:56:50,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=785, Invalid=1377, Unknown=0, NotChecked=0, Total=2162 [2020-07-07 10:56:50,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-07-07 10:56:50,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-07-07 10:56:50,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-07-07 10:56:50,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2020-07-07 10:56:50,107 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 146 [2020-07-07 10:56:50,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:50,108 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2020-07-07 10:56:50,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-07 10:56:50,108 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2020-07-07 10:56:50,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-07-07 10:56:50,110 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:50,110 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:50,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:50,323 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:50,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:50,323 INFO L82 PathProgramCache]: Analyzing trace with hash -873938119, now seen corresponding path program 20 times [2020-07-07 10:56:50,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:50,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136463568] [2020-07-07 10:56:50,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:51,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2020-07-07 10:56:51,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136463568] [2020-07-07 10:56:51,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604416196] [2020-07-07 10:56:51,188 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:51,249 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 10:56:51,249 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:51,251 INFO L264 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 44 conjunts are in the unsatisfiable core [2020-07-07 10:56:51,253 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2020-07-07 10:56:51,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:51,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2020-07-07 10:56:51,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507531559] [2020-07-07 10:56:51,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-07-07 10:56:51,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:51,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-07-07 10:56:51,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=419, Unknown=0, NotChecked=0, Total=702 [2020-07-07 10:56:51,340 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 27 states. [2020-07-07 10:56:51,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:51,788 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-07-07 10:56:51,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-07 10:56:51,790 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 153 [2020-07-07 10:56:51,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:51,792 INFO L225 Difference]: With dead ends: 95 [2020-07-07 10:56:51,792 INFO L226 Difference]: Without dead ends: 91 [2020-07-07 10:56:51,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=855, Invalid=1497, Unknown=0, NotChecked=0, Total=2352 [2020-07-07 10:56:51,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-07-07 10:56:51,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2020-07-07 10:56:51,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-07-07 10:56:51,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2020-07-07 10:56:51,798 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 153 [2020-07-07 10:56:51,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:51,799 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2020-07-07 10:56:51,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-07-07 10:56:51,799 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2020-07-07 10:56:51,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-07-07 10:56:51,801 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:51,801 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:52,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-07-07 10:56:52,015 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:52,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:52,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1461029712, now seen corresponding path program 21 times [2020-07-07 10:56:52,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:52,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967526188] [2020-07-07 10:56:52,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2020-07-07 10:56:53,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967526188] [2020-07-07 10:56:53,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661875848] [2020-07-07 10:56:53,111 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:53,185 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2020-07-07 10:56:53,185 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:53,188 INFO L264 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 46 conjunts are in the unsatisfiable core [2020-07-07 10:56:53,191 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:53,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2020-07-07 10:56:53,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:53,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-07-07 10:56:53,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119466977] [2020-07-07 10:56:53,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-07 10:56:53,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:53,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-07 10:56:53,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=449, Unknown=0, NotChecked=0, Total=756 [2020-07-07 10:56:53,287 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand 28 states. [2020-07-07 10:56:53,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:53,695 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2020-07-07 10:56:53,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-07-07 10:56:53,695 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 160 [2020-07-07 10:56:53,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:53,697 INFO L225 Difference]: With dead ends: 98 [2020-07-07 10:56:53,697 INFO L226 Difference]: Without dead ends: 94 [2020-07-07 10:56:53,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=928, Invalid=1622, Unknown=0, NotChecked=0, Total=2550 [2020-07-07 10:56:53,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-07-07 10:56:53,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2020-07-07 10:56:53,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-07-07 10:56:53,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2020-07-07 10:56:53,705 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 160 [2020-07-07 10:56:53,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:53,706 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2020-07-07 10:56:53,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-07 10:56:53,706 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2020-07-07 10:56:53,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-07-07 10:56:53,708 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:53,708 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:53,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-07-07 10:56:53,923 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:53,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:53,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1249222577, now seen corresponding path program 22 times [2020-07-07 10:56:53,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:53,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751730137] [2020-07-07 10:56:53,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2020-07-07 10:56:54,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751730137] [2020-07-07 10:56:54,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046608870] [2020-07-07 10:56:54,914 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:54,982 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 10:56:54,983 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:54,985 INFO L264 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-07 10:56:54,988 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:55,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2020-07-07 10:56:55,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:55,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2020-07-07 10:56:55,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580821980] [2020-07-07 10:56:55,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-07 10:56:55,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:55,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-07 10:56:55,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=480, Unknown=0, NotChecked=0, Total=812 [2020-07-07 10:56:55,104 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand 29 states. [2020-07-07 10:56:55,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:55,553 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2020-07-07 10:56:55,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-07 10:56:55,553 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 167 [2020-07-07 10:56:55,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:55,554 INFO L225 Difference]: With dead ends: 101 [2020-07-07 10:56:55,555 INFO L226 Difference]: Without dead ends: 97 [2020-07-07 10:56:55,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1004, Invalid=1752, Unknown=0, NotChecked=0, Total=2756 [2020-07-07 10:56:55,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-07-07 10:56:55,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-07-07 10:56:55,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-07-07 10:56:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2020-07-07 10:56:55,566 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 167 [2020-07-07 10:56:55,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:55,567 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2020-07-07 10:56:55,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-07 10:56:55,567 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2020-07-07 10:56:55,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-07-07 10:56:55,568 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:55,569 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:55,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:55,782 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:55,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:55,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1284144570, now seen corresponding path program 23 times [2020-07-07 10:56:55,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:55,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520111651] [2020-07-07 10:56:55,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:56,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2020-07-07 10:56:56,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520111651] [2020-07-07 10:56:56,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895925037] [2020-07-07 10:56:56,833 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:56,920 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-07-07 10:56:56,921 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:56,924 INFO L264 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 50 conjunts are in the unsatisfiable core [2020-07-07 10:56:56,928 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:57,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2020-07-07 10:56:57,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:57,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-07-07 10:56:57,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968561153] [2020-07-07 10:56:57,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-07 10:56:57,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:57,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-07 10:56:57,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=512, Unknown=0, NotChecked=0, Total=870 [2020-07-07 10:56:57,015 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand 30 states. [2020-07-07 10:56:57,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:57,460 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-07-07 10:56:57,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-07 10:56:57,460 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 174 [2020-07-07 10:56:57,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:57,462 INFO L225 Difference]: With dead ends: 104 [2020-07-07 10:56:57,462 INFO L226 Difference]: Without dead ends: 100 [2020-07-07 10:56:57,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1083, Invalid=1887, Unknown=0, NotChecked=0, Total=2970 [2020-07-07 10:56:57,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-07-07 10:56:57,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2020-07-07 10:56:57,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-07 10:56:57,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2020-07-07 10:56:57,468 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 174 [2020-07-07 10:56:57,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:57,469 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2020-07-07 10:56:57,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-07 10:56:57,469 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2020-07-07 10:56:57,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-07-07 10:56:57,470 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:57,470 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:57,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-07-07 10:56:57,678 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:57,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:57,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1205012069, now seen corresponding path program 24 times [2020-07-07 10:56:57,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:57,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688671911] [2020-07-07 10:56:57,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-07-07 10:56:59,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688671911] [2020-07-07 10:56:59,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039593180] [2020-07-07 10:56:59,249 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:59,393 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2020-07-07 10:56:59,393 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:59,397 INFO L264 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 52 conjunts are in the unsatisfiable core [2020-07-07 10:56:59,402 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-07-07 10:56:59,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:59,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-07-07 10:56:59,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208920470] [2020-07-07 10:56:59,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-07 10:56:59,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:59,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-07 10:56:59,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=545, Unknown=0, NotChecked=0, Total=930 [2020-07-07 10:56:59,543 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 31 states. [2020-07-07 10:57:00,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:57:00,083 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2020-07-07 10:57:00,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-07 10:57:00,083 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 181 [2020-07-07 10:57:00,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:57:00,084 INFO L225 Difference]: With dead ends: 107 [2020-07-07 10:57:00,084 INFO L226 Difference]: Without dead ends: 103 [2020-07-07 10:57:00,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1165, Invalid=2027, Unknown=0, NotChecked=0, Total=3192 [2020-07-07 10:57:00,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-07-07 10:57:00,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2020-07-07 10:57:00,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-07-07 10:57:00,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2020-07-07 10:57:00,092 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 181 [2020-07-07 10:57:00,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:57:00,093 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2020-07-07 10:57:00,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-07 10:57:00,093 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2020-07-07 10:57:00,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-07-07 10:57:00,094 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:57:00,094 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:57:00,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:00,295 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:57:00,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:57:00,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1312024796, now seen corresponding path program 25 times [2020-07-07 10:57:00,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:57:00,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091688022] [2020-07-07 10:57:00,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:57:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2020-07-07 10:57:01,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091688022] [2020-07-07 10:57:01,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622024743] [2020-07-07 10:57:01,484 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,558 INFO L264 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 54 conjunts are in the unsatisfiable core [2020-07-07 10:57:01,562 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:57:01,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2020-07-07 10:57:01,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:57:01,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 32 [2020-07-07 10:57:01,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355602361] [2020-07-07 10:57:01,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-07-07 10:57:01,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:57:01,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-07-07 10:57:01,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=579, Unknown=0, NotChecked=0, Total=992 [2020-07-07 10:57:01,665 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 32 states. [2020-07-07 10:57:02,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:57:02,165 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2020-07-07 10:57:02,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-07-07 10:57:02,166 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 188 [2020-07-07 10:57:02,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:57:02,167 INFO L225 Difference]: With dead ends: 110 [2020-07-07 10:57:02,167 INFO L226 Difference]: Without dead ends: 106 [2020-07-07 10:57:02,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1250, Invalid=2172, Unknown=0, NotChecked=0, Total=3422 [2020-07-07 10:57:02,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-07-07 10:57:02,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-07-07 10:57:02,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-07-07 10:57:02,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2020-07-07 10:57:02,183 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 188 [2020-07-07 10:57:02,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:57:02,183 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2020-07-07 10:57:02,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-07-07 10:57:02,184 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2020-07-07 10:57:02,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-07-07 10:57:02,187 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:57:02,187 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:57:02,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-07-07 10:57:02,388 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:57:02,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:57:02,389 INFO L82 PathProgramCache]: Analyzing trace with hash 461591931, now seen corresponding path program 26 times [2020-07-07 10:57:02,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:57:02,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103147] [2020-07-07 10:57:02,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:57:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:03,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2020-07-07 10:57:03,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103147] [2020-07-07 10:57:03,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001334699] [2020-07-07 10:57:03,870 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:03,949 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 10:57:03,949 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:57:03,952 INFO L264 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 56 conjunts are in the unsatisfiable core [2020-07-07 10:57:03,958 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:57:04,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2020-07-07 10:57:04,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:57:04,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-07-07 10:57:04,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648082349] [2020-07-07 10:57:04,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-07 10:57:04,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:57:04,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-07 10:57:04,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=614, Unknown=0, NotChecked=0, Total=1056 [2020-07-07 10:57:04,091 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand 33 states. [2020-07-07 10:57:04,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:57:04,634 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2020-07-07 10:57:04,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-07 10:57:04,634 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 195 [2020-07-07 10:57:04,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:57:04,635 INFO L225 Difference]: With dead ends: 113 [2020-07-07 10:57:04,635 INFO L226 Difference]: Without dead ends: 109 [2020-07-07 10:57:04,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1338, Invalid=2322, Unknown=0, NotChecked=0, Total=3660 [2020-07-07 10:57:04,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-07 10:57:04,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2020-07-07 10:57:04,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-07-07 10:57:04,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2020-07-07 10:57:04,649 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 195 [2020-07-07 10:57:04,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:57:04,649 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2020-07-07 10:57:04,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-07 10:57:04,649 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2020-07-07 10:57:04,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-07-07 10:57:04,652 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:57:04,652 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:57:04,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-07-07 10:57:04,867 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:57:04,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:57:04,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1460254606, now seen corresponding path program 27 times [2020-07-07 10:57:04,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:57:04,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391284724] [2020-07-07 10:57:04,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:57:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:06,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2020-07-07 10:57:06,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391284724] [2020-07-07 10:57:06,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39432911] [2020-07-07 10:57:06,182 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:06,281 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2020-07-07 10:57:06,281 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:57:06,283 INFO L264 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 58 conjunts are in the unsatisfiable core [2020-07-07 10:57:06,286 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:57:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2020-07-07 10:57:06,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:57:06,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 34 [2020-07-07 10:57:06,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332699564] [2020-07-07 10:57:06,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-07-07 10:57:06,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:57:06,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-07-07 10:57:06,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=650, Unknown=0, NotChecked=0, Total=1122 [2020-07-07 10:57:06,389 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand 34 states. [2020-07-07 10:57:06,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:57:06,955 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-07-07 10:57:06,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-07-07 10:57:06,955 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 202 [2020-07-07 10:57:06,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:57:06,957 INFO L225 Difference]: With dead ends: 116 [2020-07-07 10:57:06,957 INFO L226 Difference]: Without dead ends: 112 [2020-07-07 10:57:06,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1429, Invalid=2477, Unknown=0, NotChecked=0, Total=3906 [2020-07-07 10:57:06,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-07-07 10:57:06,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2020-07-07 10:57:06,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-07-07 10:57:06,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2020-07-07 10:57:06,965 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 202 [2020-07-07 10:57:06,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:57:06,965 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2020-07-07 10:57:06,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-07-07 10:57:06,966 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2020-07-07 10:57:06,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-07-07 10:57:06,966 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:57:06,967 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:57:07,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-07-07 10:57:07,168 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:57:07,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:57:07,168 INFO L82 PathProgramCache]: Analyzing trace with hash 788262289, now seen corresponding path program 28 times [2020-07-07 10:57:07,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:57:07,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059215867] [2020-07-07 10:57:07,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:57:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:08,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2020-07-07 10:57:08,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059215867] [2020-07-07 10:57:08,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19622704] [2020-07-07 10:57:08,737 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:08,816 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 10:57:08,816 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:57:08,819 INFO L264 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 60 conjunts are in the unsatisfiable core [2020-07-07 10:57:08,823 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:57:08,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2758 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2020-07-07 10:57:08,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:57:08,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-07-07 10:57:08,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462189819] [2020-07-07 10:57:08,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-07-07 10:57:08,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:57:08,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-07-07 10:57:08,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=687, Unknown=0, NotChecked=0, Total=1190 [2020-07-07 10:57:08,942 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 35 states. [2020-07-07 10:57:09,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:57:09,510 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2020-07-07 10:57:09,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-07 10:57:09,511 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 209 [2020-07-07 10:57:09,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:57:09,512 INFO L225 Difference]: With dead ends: 119 [2020-07-07 10:57:09,512 INFO L226 Difference]: Without dead ends: 115 [2020-07-07 10:57:09,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1523, Invalid=2637, Unknown=0, NotChecked=0, Total=4160 [2020-07-07 10:57:09,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-07-07 10:57:09,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2020-07-07 10:57:09,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-07-07 10:57:09,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 121 transitions. [2020-07-07 10:57:09,520 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 121 transitions. Word has length 209 [2020-07-07 10:57:09,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:57:09,520 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 121 transitions. [2020-07-07 10:57:09,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-07-07 10:57:09,521 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 121 transitions. [2020-07-07 10:57:09,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-07-07 10:57:09,522 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:57:09,522 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:57:09,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:09,737 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:57:09,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:57:09,738 INFO L82 PathProgramCache]: Analyzing trace with hash -674054408, now seen corresponding path program 29 times [2020-07-07 10:57:09,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:57:09,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126792560] [2020-07-07 10:57:09,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:57:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:11,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2020-07-07 10:57:11,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126792560] [2020-07-07 10:57:11,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288999242] [2020-07-07 10:57:11,389 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:11,490 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2020-07-07 10:57:11,491 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:57:11,494 INFO L264 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 62 conjunts are in the unsatisfiable core [2020-07-07 10:57:11,497 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:57:11,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2020-07-07 10:57:11,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:57:11,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 36 [2020-07-07 10:57:11,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893181018] [2020-07-07 10:57:11,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-07-07 10:57:11,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:57:11,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-07-07 10:57:11,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=535, Invalid=725, Unknown=0, NotChecked=0, Total=1260 [2020-07-07 10:57:11,599 INFO L87 Difference]: Start difference. First operand 113 states and 121 transitions. Second operand 36 states. [2020-07-07 10:57:12,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:57:12,174 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2020-07-07 10:57:12,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-07-07 10:57:12,175 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 216 [2020-07-07 10:57:12,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:57:12,176 INFO L225 Difference]: With dead ends: 122 [2020-07-07 10:57:12,177 INFO L226 Difference]: Without dead ends: 118 [2020-07-07 10:57:12,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1620, Invalid=2802, Unknown=0, NotChecked=0, Total=4422 [2020-07-07 10:57:12,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-07-07 10:57:12,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-07-07 10:57:12,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-07-07 10:57:12,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 124 transitions. [2020-07-07 10:57:12,184 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 124 transitions. Word has length 216 [2020-07-07 10:57:12,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:57:12,184 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 124 transitions. [2020-07-07 10:57:12,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-07-07 10:57:12,185 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 124 transitions. [2020-07-07 10:57:12,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-07-07 10:57:12,186 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:57:12,186 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:57:12,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-07-07 10:57:12,389 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:57:12,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:57:12,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1144876711, now seen corresponding path program 30 times [2020-07-07 10:57:12,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:57:12,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019534382] [2020-07-07 10:57:12,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:57:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:14,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2020-07-07 10:57:14,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019534382] [2020-07-07 10:57:14,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826211105] [2020-07-07 10:57:14,044 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:14,152 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2020-07-07 10:57:14,152 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:57:14,155 INFO L264 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 64 conjunts are in the unsatisfiable core [2020-07-07 10:57:14,159 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:57:14,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3165 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2020-07-07 10:57:14,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:57:14,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-07-07 10:57:14,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654755474] [2020-07-07 10:57:14,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-07-07 10:57:14,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:57:14,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-07-07 10:57:14,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=568, Invalid=764, Unknown=0, NotChecked=0, Total=1332 [2020-07-07 10:57:14,292 INFO L87 Difference]: Start difference. First operand 116 states and 124 transitions. Second operand 37 states. [2020-07-07 10:57:14,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:57:14,900 INFO L93 Difference]: Finished difference Result 125 states and 135 transitions. [2020-07-07 10:57:14,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-07 10:57:14,901 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 223 [2020-07-07 10:57:14,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:57:14,902 INFO L225 Difference]: With dead ends: 125 [2020-07-07 10:57:14,902 INFO L226 Difference]: Without dead ends: 121 [2020-07-07 10:57:14,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1720, Invalid=2972, Unknown=0, NotChecked=0, Total=4692 [2020-07-07 10:57:14,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-07-07 10:57:14,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2020-07-07 10:57:14,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-07-07 10:57:14,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2020-07-07 10:57:14,909 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 223 [2020-07-07 10:57:14,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:57:14,909 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2020-07-07 10:57:14,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-07-07 10:57:14,909 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2020-07-07 10:57:14,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-07-07 10:57:14,911 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:57:14,911 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:57:15,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:15,123 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:57:15,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:57:15,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1122595486, now seen corresponding path program 31 times [2020-07-07 10:57:15,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:57:15,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074480013] [2020-07-07 10:57:15,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:57:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:16,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2020-07-07 10:57:16,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074480013] [2020-07-07 10:57:16,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068042594] [2020-07-07 10:57:16,933 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:17,026 INFO L264 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 66 conjunts are in the unsatisfiable core [2020-07-07 10:57:17,031 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:57:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2020-07-07 10:57:17,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:57:17,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 38 [2020-07-07 10:57:17,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964663918] [2020-07-07 10:57:17,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-07-07 10:57:17,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:57:17,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-07-07 10:57:17,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=602, Invalid=804, Unknown=0, NotChecked=0, Total=1406 [2020-07-07 10:57:17,151 INFO L87 Difference]: Start difference. First operand 119 states and 127 transitions. Second operand 38 states. [2020-07-07 10:57:18,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:57:18,022 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-07-07 10:57:18,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-07-07 10:57:18,023 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 230 [2020-07-07 10:57:18,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:57:18,025 INFO L225 Difference]: With dead ends: 128 [2020-07-07 10:57:18,025 INFO L226 Difference]: Without dead ends: 124 [2020-07-07 10:57:18,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1823, Invalid=3147, Unknown=0, NotChecked=0, Total=4970 [2020-07-07 10:57:18,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-07-07 10:57:18,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-07-07 10:57:18,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-07-07 10:57:18,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 130 transitions. [2020-07-07 10:57:18,039 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 130 transitions. Word has length 230 [2020-07-07 10:57:18,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:57:18,040 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 130 transitions. [2020-07-07 10:57:18,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-07-07 10:57:18,040 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 130 transitions. [2020-07-07 10:57:18,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-07-07 10:57:18,044 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:57:18,044 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:57:18,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-07-07 10:57:18,259 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:57:18,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:57:18,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1055422653, now seen corresponding path program 32 times [2020-07-07 10:57:18,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:57:18,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589444343] [2020-07-07 10:57:18,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:57:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:20,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 1552 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2020-07-07 10:57:20,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589444343] [2020-07-07 10:57:20,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719797879] [2020-07-07 10:57:20,182 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:20,273 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 10:57:20,273 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:57:20,275 INFO L264 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-07 10:57:20,279 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:57:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 1552 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2020-07-07 10:57:20,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:57:20,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2020-07-07 10:57:20,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418818965] [2020-07-07 10:57:20,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-07-07 10:57:20,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:57:20,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-07-07 10:57:20,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=637, Invalid=845, Unknown=0, NotChecked=0, Total=1482 [2020-07-07 10:57:20,390 INFO L87 Difference]: Start difference. First operand 122 states and 130 transitions. Second operand 39 states. [2020-07-07 10:57:21,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:57:21,047 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2020-07-07 10:57:21,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-07-07 10:57:21,048 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 237 [2020-07-07 10:57:21,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:57:21,049 INFO L225 Difference]: With dead ends: 131 [2020-07-07 10:57:21,049 INFO L226 Difference]: Without dead ends: 127 [2020-07-07 10:57:21,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1929, Invalid=3327, Unknown=0, NotChecked=0, Total=5256 [2020-07-07 10:57:21,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-07-07 10:57:21,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2020-07-07 10:57:21,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-07-07 10:57:21,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2020-07-07 10:57:21,054 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 237 [2020-07-07 10:57:21,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:57:21,055 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2020-07-07 10:57:21,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-07-07 10:57:21,055 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2020-07-07 10:57:21,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-07-07 10:57:21,056 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:57:21,056 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:57:21,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-07-07 10:57:21,269 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:57:21,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:57:21,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1624997172, now seen corresponding path program 33 times [2020-07-07 10:57:21,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:57:21,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641034255] [2020-07-07 10:57:21,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:57:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:23,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2020-07-07 10:57:23,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641034255] [2020-07-07 10:57:23,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127459431] [2020-07-07 10:57:23,291 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:23,403 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2020-07-07 10:57:23,403 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:57:23,406 INFO L264 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 70 conjunts are in the unsatisfiable core [2020-07-07 10:57:23,410 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:57:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2020-07-07 10:57:23,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:57:23,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 40 [2020-07-07 10:57:23,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348413577] [2020-07-07 10:57:23,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-07-07 10:57:23,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:57:23,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-07-07 10:57:23,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=887, Unknown=0, NotChecked=0, Total=1560 [2020-07-07 10:57:23,578 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand 40 states. [2020-07-07 10:57:24,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:57:24,303 INFO L93 Difference]: Finished difference Result 134 states and 144 transitions. [2020-07-07 10:57:24,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-07-07 10:57:24,304 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 244 [2020-07-07 10:57:24,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:57:24,305 INFO L225 Difference]: With dead ends: 134 [2020-07-07 10:57:24,305 INFO L226 Difference]: Without dead ends: 130 [2020-07-07 10:57:24,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2038, Invalid=3512, Unknown=0, NotChecked=0, Total=5550 [2020-07-07 10:57:24,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-07-07 10:57:24,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-07-07 10:57:24,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-07 10:57:24,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 136 transitions. [2020-07-07 10:57:24,312 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 136 transitions. Word has length 244 [2020-07-07 10:57:24,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:57:24,313 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 136 transitions. [2020-07-07 10:57:24,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-07-07 10:57:24,313 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 136 transitions. [2020-07-07 10:57:24,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-07-07 10:57:24,315 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:57:24,315 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:57:24,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-07-07 10:57:24,529 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:57:24,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:57:24,529 INFO L82 PathProgramCache]: Analyzing trace with hash -2109887533, now seen corresponding path program 34 times [2020-07-07 10:57:24,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:57:24,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725375397] [2020-07-07 10:57:24,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:57:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:26,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 1751 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2020-07-07 10:57:26,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725375397] [2020-07-07 10:57:26,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099837776] [2020-07-07 10:57:26,763 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:26,858 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 10:57:26,858 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:57:26,861 INFO L264 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 72 conjunts are in the unsatisfiable core [2020-07-07 10:57:26,864 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:57:26,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4063 backedges. 0 proven. 1751 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2020-07-07 10:57:26,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:57:26,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2020-07-07 10:57:26,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919604054] [2020-07-07 10:57:26,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-07-07 10:57:26,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:57:26,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-07-07 10:57:26,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=710, Invalid=930, Unknown=0, NotChecked=0, Total=1640 [2020-07-07 10:57:26,999 INFO L87 Difference]: Start difference. First operand 128 states and 136 transitions. Second operand 41 states. [2020-07-07 10:57:27,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:57:27,734 INFO L93 Difference]: Finished difference Result 137 states and 147 transitions. [2020-07-07 10:57:27,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-07-07 10:57:27,734 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 251 [2020-07-07 10:57:27,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:57:27,736 INFO L225 Difference]: With dead ends: 137 [2020-07-07 10:57:27,736 INFO L226 Difference]: Without dead ends: 133 [2020-07-07 10:57:27,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1259 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2150, Invalid=3702, Unknown=0, NotChecked=0, Total=5852 [2020-07-07 10:57:27,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-07-07 10:57:27,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-07-07 10:57:27,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-07-07 10:57:27,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 139 transitions. [2020-07-07 10:57:27,743 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 139 transitions. Word has length 251 [2020-07-07 10:57:27,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:57:27,744 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 139 transitions. [2020-07-07 10:57:27,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-07-07 10:57:27,744 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 139 transitions. [2020-07-07 10:57:27,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-07-07 10:57:27,746 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:57:27,746 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:57:27,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-07-07 10:57:27,959 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:57:27,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:57:27,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1202454326, now seen corresponding path program 35 times [2020-07-07 10:57:27,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:57:27,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324005891] [2020-07-07 10:57:27,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:57:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:30,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 1855 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-07-07 10:57:30,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324005891] [2020-07-07 10:57:30,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481916500] [2020-07-07 10:57:30,559 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:30,685 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2020-07-07 10:57:30,685 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:57:30,689 INFO L264 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 74 conjunts are in the unsatisfiable core [2020-07-07 10:57:30,693 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:57:30,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 1855 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2020-07-07 10:57:30,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:57:30,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 42 [2020-07-07 10:57:30,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416388823] [2020-07-07 10:57:30,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-07-07 10:57:30,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:57:30,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-07-07 10:57:30,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=748, Invalid=974, Unknown=0, NotChecked=0, Total=1722 [2020-07-07 10:57:30,835 INFO L87 Difference]: Start difference. First operand 131 states and 139 transitions. Second operand 42 states. [2020-07-07 10:57:31,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:57:31,603 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-07-07 10:57:31,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-07-07 10:57:31,603 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 258 [2020-07-07 10:57:31,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:57:31,604 INFO L225 Difference]: With dead ends: 140 [2020-07-07 10:57:31,605 INFO L226 Difference]: Without dead ends: 136 [2020-07-07 10:57:31,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1331 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2265, Invalid=3897, Unknown=0, NotChecked=0, Total=6162 [2020-07-07 10:57:31,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-07 10:57:31,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2020-07-07 10:57:31,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-07-07 10:57:31,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 142 transitions. [2020-07-07 10:57:31,612 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 142 transitions. Word has length 258 [2020-07-07 10:57:31,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:57:31,613 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 142 transitions. [2020-07-07 10:57:31,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-07-07 10:57:31,613 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 142 transitions. [2020-07-07 10:57:31,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-07-07 10:57:31,615 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:57:31,615 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:57:31,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-07-07 10:57:31,829 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:57:31,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:57:31,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1327343593, now seen corresponding path program 36 times [2020-07-07 10:57:31,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:57:31,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206261003] [2020-07-07 10:57:31,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:57:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:34,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 1962 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2020-07-07 10:57:34,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206261003] [2020-07-07 10:57:34,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473181779] [2020-07-07 10:57:34,965 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:35,089 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2020-07-07 10:57:35,089 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:57:35,093 INFO L264 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 76 conjunts are in the unsatisfiable core [2020-07-07 10:57:35,097 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:57:35,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4554 backedges. 0 proven. 1962 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2020-07-07 10:57:35,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:57:35,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2020-07-07 10:57:35,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396421544] [2020-07-07 10:57:35,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-07-07 10:57:35,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:57:35,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-07-07 10:57:35,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=1019, Unknown=0, NotChecked=0, Total=1806 [2020-07-07 10:57:35,250 INFO L87 Difference]: Start difference. First operand 134 states and 142 transitions. Second operand 43 states. [2020-07-07 10:57:36,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:57:36,072 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2020-07-07 10:57:36,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-07-07 10:57:36,072 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 265 [2020-07-07 10:57:36,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:57:36,074 INFO L225 Difference]: With dead ends: 143 [2020-07-07 10:57:36,074 INFO L226 Difference]: Without dead ends: 139 [2020-07-07 10:57:36,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1405 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2383, Invalid=4097, Unknown=0, NotChecked=0, Total=6480 [2020-07-07 10:57:36,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-07-07 10:57:36,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2020-07-07 10:57:36,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-07-07 10:57:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 145 transitions. [2020-07-07 10:57:36,081 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 145 transitions. Word has length 265 [2020-07-07 10:57:36,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:57:36,081 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 145 transitions. [2020-07-07 10:57:36,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-07-07 10:57:36,082 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 145 transitions. [2020-07-07 10:57:36,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-07-07 10:57:36,083 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:57:36,084 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:57:36,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-07-07 10:57:36,298 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:57:36,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:57:36,299 INFO L82 PathProgramCache]: Analyzing trace with hash -742628704, now seen corresponding path program 37 times [2020-07-07 10:57:36,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:57:36,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402714951] [2020-07-07 10:57:36,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:57:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:38,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2072 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2020-07-07 10:57:38,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402714951] [2020-07-07 10:57:38,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751764066] [2020-07-07 10:57:38,976 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:39,086 INFO L264 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 78 conjunts are in the unsatisfiable core [2020-07-07 10:57:39,092 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:57:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2072 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2020-07-07 10:57:39,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:57:39,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 44 [2020-07-07 10:57:39,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374350343] [2020-07-07 10:57:39,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-07-07 10:57:39,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:57:39,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-07-07 10:57:39,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=827, Invalid=1065, Unknown=0, NotChecked=0, Total=1892 [2020-07-07 10:57:39,229 INFO L87 Difference]: Start difference. First operand 137 states and 145 transitions. Second operand 44 states. [2020-07-07 10:57:40,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:57:40,043 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2020-07-07 10:57:40,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-07-07 10:57:40,044 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 272 [2020-07-07 10:57:40,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:57:40,046 INFO L225 Difference]: With dead ends: 146 [2020-07-07 10:57:40,046 INFO L226 Difference]: Without dead ends: 142 [2020-07-07 10:57:40,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2504, Invalid=4302, Unknown=0, NotChecked=0, Total=6806 [2020-07-07 10:57:40,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-07-07 10:57:40,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-07-07 10:57:40,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-07 10:57:40,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 148 transitions. [2020-07-07 10:57:40,056 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 148 transitions. Word has length 272 [2020-07-07 10:57:40,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:57:40,057 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 148 transitions. [2020-07-07 10:57:40,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-07-07 10:57:40,057 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 148 transitions. [2020-07-07 10:57:40,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-07-07 10:57:40,060 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:57:40,060 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:57:40,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-07-07 10:57:40,275 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:57:40,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:57:40,275 INFO L82 PathProgramCache]: Analyzing trace with hash 571018495, now seen corresponding path program 38 times [2020-07-07 10:57:40,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:57:40,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388025516] [2020-07-07 10:57:40,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:57:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:43,818 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 2185 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2020-07-07 10:57:43,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388025516] [2020-07-07 10:57:43,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745416766] [2020-07-07 10:57:43,818 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:43,926 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 10:57:43,927 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:57:43,929 INFO L264 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 80 conjunts are in the unsatisfiable core [2020-07-07 10:57:43,935 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:57:44,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5073 backedges. 0 proven. 2185 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2020-07-07 10:57:44,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:57:44,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2020-07-07 10:57:44,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038340610] [2020-07-07 10:57:44,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-07-07 10:57:44,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:57:44,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-07-07 10:57:44,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=868, Invalid=1112, Unknown=0, NotChecked=0, Total=1980 [2020-07-07 10:57:44,109 INFO L87 Difference]: Start difference. First operand 140 states and 148 transitions. Second operand 45 states. [2020-07-07 10:57:45,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:57:45,203 INFO L93 Difference]: Finished difference Result 149 states and 159 transitions. [2020-07-07 10:57:45,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-07-07 10:57:45,203 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 279 [2020-07-07 10:57:45,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:57:45,205 INFO L225 Difference]: With dead ends: 149 [2020-07-07 10:57:45,205 INFO L226 Difference]: Without dead ends: 145 [2020-07-07 10:57:45,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2628, Invalid=4512, Unknown=0, NotChecked=0, Total=7140 [2020-07-07 10:57:45,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-07-07 10:57:45,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2020-07-07 10:57:45,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-07-07 10:57:45,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 151 transitions. [2020-07-07 10:57:45,212 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 151 transitions. Word has length 279 [2020-07-07 10:57:45,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:57:45,212 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 151 transitions. [2020-07-07 10:57:45,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-07-07 10:57:45,212 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 151 transitions. [2020-07-07 10:57:45,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-07-07 10:57:45,214 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:57:45,214 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:57:45,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-07-07 10:57:45,428 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:57:45,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:57:45,429 INFO L82 PathProgramCache]: Analyzing trace with hash -708506358, now seen corresponding path program 39 times [2020-07-07 10:57:45,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:57:45,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821842409] [2020-07-07 10:57:45,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:57:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:46,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:48,895 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2020-07-07 10:57:48,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821842409] [2020-07-07 10:57:48,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587527394] [2020-07-07 10:57:48,896 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:49,044 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2020-07-07 10:57:49,044 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:57:49,049 INFO L264 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 82 conjunts are in the unsatisfiable core [2020-07-07 10:57:49,053 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:57:49,198 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2020-07-07 10:57:49,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:57:49,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 46 [2020-07-07 10:57:49,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779453497] [2020-07-07 10:57:49,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-07-07 10:57:49,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:57:49,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-07-07 10:57:49,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=910, Invalid=1160, Unknown=0, NotChecked=0, Total=2070 [2020-07-07 10:57:49,199 INFO L87 Difference]: Start difference. First operand 143 states and 151 transitions. Second operand 46 states. [2020-07-07 10:57:50,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:57:50,136 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-07-07 10:57:50,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-07-07 10:57:50,137 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 286 [2020-07-07 10:57:50,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:57:50,139 INFO L225 Difference]: With dead ends: 152 [2020-07-07 10:57:50,139 INFO L226 Difference]: Without dead ends: 148 [2020-07-07 10:57:50,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1639 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2755, Invalid=4727, Unknown=0, NotChecked=0, Total=7482 [2020-07-07 10:57:50,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-07-07 10:57:50,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2020-07-07 10:57:50,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-07-07 10:57:50,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2020-07-07 10:57:50,146 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 286 [2020-07-07 10:57:50,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:57:50,147 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2020-07-07 10:57:50,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-07-07 10:57:50,147 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2020-07-07 10:57:50,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-07-07 10:57:50,149 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:57:50,149 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:57:50,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:50,364 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:57:50,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:57:50,365 INFO L82 PathProgramCache]: Analyzing trace with hash 287341333, now seen corresponding path program 40 times [2020-07-07 10:57:50,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:57:50,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238126055] [2020-07-07 10:57:50,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:57:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:53,888 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 2420 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2020-07-07 10:57:53,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238126055] [2020-07-07 10:57:53,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076480873] [2020-07-07 10:57:53,889 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:54,005 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 10:57:54,005 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:57:54,009 INFO L264 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 84 conjunts are in the unsatisfiable core [2020-07-07 10:57:54,012 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:57:54,206 INFO L134 CoverageAnalysis]: Checked inductivity of 5620 backedges. 0 proven. 2420 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2020-07-07 10:57:54,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:57:54,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2020-07-07 10:57:54,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678578384] [2020-07-07 10:57:54,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-07-07 10:57:54,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:57:54,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-07-07 10:57:54,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=953, Invalid=1209, Unknown=0, NotChecked=0, Total=2162 [2020-07-07 10:57:54,209 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand 47 states. [2020-07-07 10:57:55,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:57:55,181 INFO L93 Difference]: Finished difference Result 155 states and 165 transitions. [2020-07-07 10:57:55,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-07-07 10:57:55,182 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 293 [2020-07-07 10:57:55,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:57:55,184 INFO L225 Difference]: With dead ends: 155 [2020-07-07 10:57:55,185 INFO L226 Difference]: Without dead ends: 151 [2020-07-07 10:57:55,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1721 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2885, Invalid=4947, Unknown=0, NotChecked=0, Total=7832 [2020-07-07 10:57:55,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-07-07 10:57:55,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-07-07 10:57:55,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-07-07 10:57:55,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 157 transitions. [2020-07-07 10:57:55,191 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 157 transitions. Word has length 293 [2020-07-07 10:57:55,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:57:55,192 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 157 transitions. [2020-07-07 10:57:55,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-07-07 10:57:55,192 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 157 transitions. [2020-07-07 10:57:55,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-07-07 10:57:55,194 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:57:55,194 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:57:55,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:55,408 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:57:55,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:57:55,408 INFO L82 PathProgramCache]: Analyzing trace with hash 2006277748, now seen corresponding path program 41 times [2020-07-07 10:57:55,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:57:55,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277941170] [2020-07-07 10:57:55,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:57:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 2542 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2020-07-07 10:57:59,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277941170] [2020-07-07 10:57:59,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943765426] [2020-07-07 10:57:59,226 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:59,374 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2020-07-07 10:57:59,374 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:57:59,379 INFO L264 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 86 conjunts are in the unsatisfiable core [2020-07-07 10:57:59,383 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:57:59,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 2542 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2020-07-07 10:57:59,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:57:59,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 48 [2020-07-07 10:57:59,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950458094] [2020-07-07 10:57:59,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-07-07 10:57:59,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:57:59,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-07-07 10:57:59,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=997, Invalid=1259, Unknown=0, NotChecked=0, Total=2256 [2020-07-07 10:57:59,618 INFO L87 Difference]: Start difference. First operand 149 states and 157 transitions. Second operand 48 states. [2020-07-07 10:58:00,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:58:00,712 INFO L93 Difference]: Finished difference Result 158 states and 168 transitions. [2020-07-07 10:58:00,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-07-07 10:58:00,713 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 300 [2020-07-07 10:58:00,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:58:00,715 INFO L225 Difference]: With dead ends: 158 [2020-07-07 10:58:00,715 INFO L226 Difference]: Without dead ends: 154 [2020-07-07 10:58:00,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1805 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3018, Invalid=5172, Unknown=0, NotChecked=0, Total=8190 [2020-07-07 10:58:00,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-07-07 10:58:00,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2020-07-07 10:58:00,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-07-07 10:58:00,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 160 transitions. [2020-07-07 10:58:00,722 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 160 transitions. Word has length 300 [2020-07-07 10:58:00,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:58:00,723 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 160 transitions. [2020-07-07 10:58:00,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-07-07 10:58:00,723 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 160 transitions. [2020-07-07 10:58:00,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-07-07 10:58:00,725 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:58:00,725 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:58:00,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2020-07-07 10:58:00,940 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:58:00,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:58:00,941 INFO L82 PathProgramCache]: Analyzing trace with hash 707039787, now seen corresponding path program 42 times [2020-07-07 10:58:00,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:58:00,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086749647] [2020-07-07 10:58:00,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:58:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:04,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 0 proven. 2667 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2020-07-07 10:58:04,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086749647] [2020-07-07 10:58:04,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708712050] [2020-07-07 10:58:04,744 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:58:04,904 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2020-07-07 10:58:04,904 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:58:04,911 INFO L264 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 88 conjunts are in the unsatisfiable core [2020-07-07 10:58:04,914 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:58:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6195 backedges. 0 proven. 2667 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2020-07-07 10:58:05,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:58:05,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2020-07-07 10:58:05,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461417837] [2020-07-07 10:58:05,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-07-07 10:58:05,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:58:05,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-07-07 10:58:05,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1042, Invalid=1310, Unknown=0, NotChecked=0, Total=2352 [2020-07-07 10:58:05,120 INFO L87 Difference]: Start difference. First operand 152 states and 160 transitions. Second operand 49 states. [2020-07-07 10:58:06,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:58:06,193 INFO L93 Difference]: Finished difference Result 161 states and 171 transitions. [2020-07-07 10:58:06,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-07-07 10:58:06,194 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 307 [2020-07-07 10:58:06,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:58:06,195 INFO L225 Difference]: With dead ends: 161 [2020-07-07 10:58:06,195 INFO L226 Difference]: Without dead ends: 157 [2020-07-07 10:58:06,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3154, Invalid=5402, Unknown=0, NotChecked=0, Total=8556 [2020-07-07 10:58:06,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-07-07 10:58:06,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2020-07-07 10:58:06,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-07-07 10:58:06,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 163 transitions. [2020-07-07 10:58:06,201 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 163 transitions. Word has length 307 [2020-07-07 10:58:06,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:58:06,202 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 163 transitions. [2020-07-07 10:58:06,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-07-07 10:58:06,202 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 163 transitions. [2020-07-07 10:58:06,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-07-07 10:58:06,204 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:58:06,204 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:58:06,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:58:06,418 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:58:06,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:58:06,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1671645474, now seen corresponding path program 43 times [2020-07-07 10:58:06,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:58:06,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014462024] [2020-07-07 10:58:06,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:58:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:10,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2020-07-07 10:58:10,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014462024] [2020-07-07 10:58:10,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020613028] [2020-07-07 10:58:10,651 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:58:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:10,792 INFO L264 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 90 conjunts are in the unsatisfiable core [2020-07-07 10:58:10,798 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:58:11,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2020-07-07 10:58:11,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:58:11,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 50 [2020-07-07 10:58:11,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730909455] [2020-07-07 10:58:11,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-07-07 10:58:11,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:58:11,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-07-07 10:58:11,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=1362, Unknown=0, NotChecked=0, Total=2450 [2020-07-07 10:58:11,020 INFO L87 Difference]: Start difference. First operand 155 states and 163 transitions. Second operand 50 states. [2020-07-07 10:58:12,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:58:12,137 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-07-07 10:58:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-07-07 10:58:12,137 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 314 [2020-07-07 10:58:12,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:58:12,140 INFO L225 Difference]: With dead ends: 164 [2020-07-07 10:58:12,140 INFO L226 Difference]: Without dead ends: 160 [2020-07-07 10:58:12,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1979 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3293, Invalid=5637, Unknown=0, NotChecked=0, Total=8930 [2020-07-07 10:58:12,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-07-07 10:58:12,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-07-07 10:58:12,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-07-07 10:58:12,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 166 transitions. [2020-07-07 10:58:12,147 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 166 transitions. Word has length 314 [2020-07-07 10:58:12,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:58:12,147 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 166 transitions. [2020-07-07 10:58:12,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-07-07 10:58:12,147 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 166 transitions. [2020-07-07 10:58:12,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-07-07 10:58:12,149 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:58:12,150 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:58:12,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:58:12,364 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:58:12,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:58:12,365 INFO L82 PathProgramCache]: Analyzing trace with hash -797576639, now seen corresponding path program 44 times [2020-07-07 10:58:12,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:58:12,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743798705] [2020-07-07 10:58:12,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:58:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2020-07-07 10:58:16,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743798705] [2020-07-07 10:58:16,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185235015] [2020-07-07 10:58:16,479 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:58:16,673 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 10:58:16,673 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:58:16,676 INFO L264 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 92 conjunts are in the unsatisfiable core [2020-07-07 10:58:16,680 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:58:16,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6798 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2020-07-07 10:58:16,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:58:16,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2020-07-07 10:58:16,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86260095] [2020-07-07 10:58:16,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-07-07 10:58:16,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:58:16,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-07-07 10:58:16,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1135, Invalid=1415, Unknown=0, NotChecked=0, Total=2550 [2020-07-07 10:58:16,861 INFO L87 Difference]: Start difference. First operand 158 states and 166 transitions. Second operand 51 states. [2020-07-07 10:58:18,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:58:18,009 INFO L93 Difference]: Finished difference Result 167 states and 177 transitions. [2020-07-07 10:58:18,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-07-07 10:58:18,010 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 321 [2020-07-07 10:58:18,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:58:18,011 INFO L225 Difference]: With dead ends: 167 [2020-07-07 10:58:18,011 INFO L226 Difference]: Without dead ends: 163 [2020-07-07 10:58:18,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2069 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3435, Invalid=5877, Unknown=0, NotChecked=0, Total=9312 [2020-07-07 10:58:18,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-07-07 10:58:18,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 161. [2020-07-07 10:58:18,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-07-07 10:58:18,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 169 transitions. [2020-07-07 10:58:18,018 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 169 transitions. Word has length 321 [2020-07-07 10:58:18,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:58:18,019 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 169 transitions. [2020-07-07 10:58:18,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-07-07 10:58:18,019 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 169 transitions. [2020-07-07 10:58:18,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-07-07 10:58:18,021 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:58:18,022 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:58:18,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-07-07 10:58:18,236 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:58:18,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:58:18,236 INFO L82 PathProgramCache]: Analyzing trace with hash 44725832, now seen corresponding path program 45 times [2020-07-07 10:58:18,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:58:18,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558301044] [2020-07-07 10:58:18,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:58:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:22,637 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 0 proven. 3060 refuted. 0 times theorem prover too weak. 4050 trivial. 0 not checked. [2020-07-07 10:58:22,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558301044] [2020-07-07 10:58:22,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112401592] [2020-07-07 10:58:22,637 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:58:22,807 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2020-07-07 10:58:22,807 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:58:22,812 INFO L264 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 94 conjunts are in the unsatisfiable core [2020-07-07 10:58:22,816 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:58:23,146 INFO L134 CoverageAnalysis]: Checked inductivity of 7110 backedges. 0 proven. 3060 refuted. 0 times theorem prover too weak. 4050 trivial. 0 not checked. [2020-07-07 10:58:23,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:58:23,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 52 [2020-07-07 10:58:23,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055135725] [2020-07-07 10:58:23,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-07-07 10:58:23,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:58:23,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-07-07 10:58:23,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1183, Invalid=1469, Unknown=0, NotChecked=0, Total=2652 [2020-07-07 10:58:23,148 INFO L87 Difference]: Start difference. First operand 161 states and 169 transitions. Second operand 52 states. [2020-07-07 10:58:24,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:58:24,309 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2020-07-07 10:58:24,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-07-07 10:58:24,309 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 328 [2020-07-07 10:58:24,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:58:24,311 INFO L225 Difference]: With dead ends: 170 [2020-07-07 10:58:24,311 INFO L226 Difference]: Without dead ends: 166 [2020-07-07 10:58:24,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2161 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3580, Invalid=6122, Unknown=0, NotChecked=0, Total=9702 [2020-07-07 10:58:24,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-07-07 10:58:24,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-07-07 10:58:24,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-07-07 10:58:24,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 172 transitions. [2020-07-07 10:58:24,317 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 172 transitions. Word has length 328 [2020-07-07 10:58:24,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:58:24,317 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 172 transitions. [2020-07-07 10:58:24,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-07-07 10:58:24,317 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 172 transitions. [2020-07-07 10:58:24,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-07 10:58:24,319 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:58:24,319 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:58:24,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-07-07 10:58:24,520 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:58:24,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:58:24,521 INFO L82 PathProgramCache]: Analyzing trace with hash 454376279, now seen corresponding path program 46 times [2020-07-07 10:58:24,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:58:24,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584439331] [2020-07-07 10:58:24,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:58:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:29,440 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2020-07-07 10:58:29,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584439331] [2020-07-07 10:58:29,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052296864] [2020-07-07 10:58:29,441 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:58:29,576 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 10:58:29,576 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:58:29,581 INFO L264 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 96 conjunts are in the unsatisfiable core [2020-07-07 10:58:29,588 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:58:29,895 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2020-07-07 10:58:29,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:58:29,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2020-07-07 10:58:29,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843067557] [2020-07-07 10:58:29,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-07-07 10:58:29,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:58:29,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-07-07 10:58:29,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1232, Invalid=1524, Unknown=0, NotChecked=0, Total=2756 [2020-07-07 10:58:29,898 INFO L87 Difference]: Start difference. First operand 164 states and 172 transitions. Second operand 53 states. [2020-07-07 10:58:31,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:58:31,157 INFO L93 Difference]: Finished difference Result 173 states and 183 transitions. [2020-07-07 10:58:31,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-07-07 10:58:31,158 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 335 [2020-07-07 10:58:31,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:58:31,160 INFO L225 Difference]: With dead ends: 173 [2020-07-07 10:58:31,161 INFO L226 Difference]: Without dead ends: 169 [2020-07-07 10:58:31,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2255 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3728, Invalid=6372, Unknown=0, NotChecked=0, Total=10100 [2020-07-07 10:58:31,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-07-07 10:58:31,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2020-07-07 10:58:31,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-07-07 10:58:31,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 175 transitions. [2020-07-07 10:58:31,169 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 175 transitions. Word has length 335 [2020-07-07 10:58:31,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:58:31,170 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 175 transitions. [2020-07-07 10:58:31,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-07-07 10:58:31,170 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 175 transitions. [2020-07-07 10:58:31,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-07-07 10:58:31,173 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:58:31,173 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:58:31,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2020-07-07 10:58:31,386 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:58:31,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:58:31,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1718484146, now seen corresponding path program 47 times [2020-07-07 10:58:31,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:58:31,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235120885] [2020-07-07 10:58:31,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:58:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:32,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:36,837 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 3337 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2020-07-07 10:58:36,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235120885] [2020-07-07 10:58:36,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188091620] [2020-07-07 10:58:36,837 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:58:37,015 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2020-07-07 10:58:37,016 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:58:37,024 INFO L264 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 98 conjunts are in the unsatisfiable core [2020-07-07 10:58:37,030 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:58:37,347 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 3337 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2020-07-07 10:58:37,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:58:37,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 54 [2020-07-07 10:58:37,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673201714] [2020-07-07 10:58:37,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-07-07 10:58:37,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:58:37,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-07-07 10:58:37,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1282, Invalid=1580, Unknown=0, NotChecked=0, Total=2862 [2020-07-07 10:58:37,352 INFO L87 Difference]: Start difference. First operand 167 states and 175 transitions. Second operand 54 states. [2020-07-07 10:58:38,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:58:38,708 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2020-07-07 10:58:38,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-07-07 10:58:38,708 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 342 [2020-07-07 10:58:38,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:58:38,710 INFO L225 Difference]: With dead ends: 176 [2020-07-07 10:58:38,711 INFO L226 Difference]: Without dead ends: 172 [2020-07-07 10:58:38,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2351 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3879, Invalid=6627, Unknown=0, NotChecked=0, Total=10506 [2020-07-07 10:58:38,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-07-07 10:58:38,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2020-07-07 10:58:38,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-07-07 10:58:38,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 178 transitions. [2020-07-07 10:58:38,718 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 178 transitions. Word has length 342 [2020-07-07 10:58:38,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:58:38,718 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 178 transitions. [2020-07-07 10:58:38,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-07-07 10:58:38,719 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 178 transitions. [2020-07-07 10:58:38,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-07-07 10:58:38,720 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:58:38,721 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:58:38,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:58:38,926 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:58:38,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:58:38,927 INFO L82 PathProgramCache]: Analyzing trace with hash 849546605, now seen corresponding path program 48 times [2020-07-07 10:58:38,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:58:38,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970111679] [2020-07-07 10:58:38,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:58:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:43,884 INFO L134 CoverageAnalysis]: Checked inductivity of 8088 backedges. 0 proven. 3480 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2020-07-07 10:58:43,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970111679] [2020-07-07 10:58:43,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980952494] [2020-07-07 10:58:43,885 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:58:44,067 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2020-07-07 10:58:44,068 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:58:44,073 INFO L264 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 100 conjunts are in the unsatisfiable core [2020-07-07 10:58:44,077 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:58:44,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8088 backedges. 0 proven. 3480 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2020-07-07 10:58:44,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:58:44,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2020-07-07 10:58:44,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499313004] [2020-07-07 10:58:44,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-07-07 10:58:44,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:58:44,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-07-07 10:58:44,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1333, Invalid=1637, Unknown=0, NotChecked=0, Total=2970 [2020-07-07 10:58:44,297 INFO L87 Difference]: Start difference. First operand 170 states and 178 transitions. Second operand 55 states. [2020-07-07 10:58:45,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:58:45,617 INFO L93 Difference]: Finished difference Result 179 states and 189 transitions. [2020-07-07 10:58:45,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-07-07 10:58:45,618 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 349 [2020-07-07 10:58:45,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:58:45,620 INFO L225 Difference]: With dead ends: 179 [2020-07-07 10:58:45,620 INFO L226 Difference]: Without dead ends: 175 [2020-07-07 10:58:45,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2449 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4033, Invalid=6887, Unknown=0, NotChecked=0, Total=10920 [2020-07-07 10:58:45,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-07-07 10:58:45,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2020-07-07 10:58:45,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-07-07 10:58:45,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 181 transitions. [2020-07-07 10:58:45,628 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 181 transitions. Word has length 349 [2020-07-07 10:58:45,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:58:45,628 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 181 transitions. [2020-07-07 10:58:45,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-07-07 10:58:45,628 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 181 transitions. [2020-07-07 10:58:45,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-07-07 10:58:45,631 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:58:45,631 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:58:45,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-07-07 10:58:45,844 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:58:45,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:58:45,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1560892900, now seen corresponding path program 49 times [2020-07-07 10:58:45,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:58:45,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913052002] [2020-07-07 10:58:45,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:58:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:47,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:51,077 INFO L134 CoverageAnalysis]: Checked inductivity of 8428 backedges. 0 proven. 3626 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2020-07-07 10:58:51,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913052002] [2020-07-07 10:58:51,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455473621] [2020-07-07 10:58:51,078 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:58:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:51,213 INFO L264 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 102 conjunts are in the unsatisfiable core [2020-07-07 10:58:51,217 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:58:51,473 INFO L134 CoverageAnalysis]: Checked inductivity of 8428 backedges. 0 proven. 3626 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2020-07-07 10:58:51,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:58:51,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 56 [2020-07-07 10:58:51,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305674420] [2020-07-07 10:58:51,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-07-07 10:58:51,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:58:51,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-07-07 10:58:51,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1385, Invalid=1695, Unknown=0, NotChecked=0, Total=3080 [2020-07-07 10:58:51,483 INFO L87 Difference]: Start difference. First operand 173 states and 181 transitions. Second operand 56 states. [2020-07-07 10:58:52,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:58:52,834 INFO L93 Difference]: Finished difference Result 182 states and 192 transitions. [2020-07-07 10:58:52,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-07-07 10:58:52,834 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 356 [2020-07-07 10:58:52,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:58:52,836 INFO L225 Difference]: With dead ends: 182 [2020-07-07 10:58:52,837 INFO L226 Difference]: Without dead ends: 178 [2020-07-07 10:58:52,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2549 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4190, Invalid=7152, Unknown=0, NotChecked=0, Total=11342 [2020-07-07 10:58:52,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-07-07 10:58:52,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2020-07-07 10:58:52,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-07-07 10:58:52,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 184 transitions. [2020-07-07 10:58:52,844 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 184 transitions. Word has length 356 [2020-07-07 10:58:52,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:58:52,844 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 184 transitions. [2020-07-07 10:58:52,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-07-07 10:58:52,844 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 184 transitions. [2020-07-07 10:58:52,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-07-07 10:58:52,847 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:58:52,847 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:58:53,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:58:53,049 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:58:53,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:58:53,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1352660861, now seen corresponding path program 50 times [2020-07-07 10:58:53,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:58:53,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361610344] [2020-07-07 10:58:53,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:58:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:58:58,908 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 0 proven. 3775 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2020-07-07 10:58:58,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361610344] [2020-07-07 10:58:58,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244384382] [2020-07-07 10:58:58,909 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:58:59,050 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 10:58:59,050 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:58:59,055 INFO L264 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 104 conjunts are in the unsatisfiable core [2020-07-07 10:58:59,061 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:58:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 8775 backedges. 0 proven. 3775 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2020-07-07 10:58:59,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:58:59,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2020-07-07 10:58:59,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714938130] [2020-07-07 10:58:59,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-07-07 10:58:59,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:58:59,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-07-07 10:58:59,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1438, Invalid=1754, Unknown=0, NotChecked=0, Total=3192 [2020-07-07 10:58:59,311 INFO L87 Difference]: Start difference. First operand 176 states and 184 transitions. Second operand 57 states. [2020-07-07 10:59:00,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:59:00,765 INFO L93 Difference]: Finished difference Result 185 states and 195 transitions. [2020-07-07 10:59:00,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-07-07 10:59:00,766 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 363 [2020-07-07 10:59:00,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:59:00,769 INFO L225 Difference]: With dead ends: 185 [2020-07-07 10:59:00,769 INFO L226 Difference]: Without dead ends: 181 [2020-07-07 10:59:00,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2651 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4350, Invalid=7422, Unknown=0, NotChecked=0, Total=11772 [2020-07-07 10:59:00,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-07-07 10:59:00,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2020-07-07 10:59:00,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-07-07 10:59:00,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 187 transitions. [2020-07-07 10:59:00,777 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 187 transitions. Word has length 363 [2020-07-07 10:59:00,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:59:00,778 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 187 transitions. [2020-07-07 10:59:00,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-07-07 10:59:00,778 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 187 transitions. [2020-07-07 10:59:00,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-07-07 10:59:00,781 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:59:00,781 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:59:00,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:59:00,995 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:59:00,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:59:00,996 INFO L82 PathProgramCache]: Analyzing trace with hash -722215290, now seen corresponding path program 51 times [2020-07-07 10:59:00,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:59:00,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503258832] [2020-07-07 10:59:00,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:59:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:07,720 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 0 proven. 3927 refuted. 0 times theorem prover too weak. 5202 trivial. 0 not checked. [2020-07-07 10:59:07,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503258832] [2020-07-07 10:59:07,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465799744] [2020-07-07 10:59:07,721 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:59:07,911 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2020-07-07 10:59:07,912 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:59:07,919 INFO L264 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 106 conjunts are in the unsatisfiable core [2020-07-07 10:59:07,924 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:59:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 9129 backedges. 0 proven. 3927 refuted. 0 times theorem prover too weak. 5202 trivial. 0 not checked. [2020-07-07 10:59:08,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:59:08,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 58 [2020-07-07 10:59:08,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996033760] [2020-07-07 10:59:08,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-07-07 10:59:08,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:59:08,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-07-07 10:59:08,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1492, Invalid=1814, Unknown=0, NotChecked=0, Total=3306 [2020-07-07 10:59:08,156 INFO L87 Difference]: Start difference. First operand 179 states and 187 transitions. Second operand 58 states. [2020-07-07 10:59:09,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:59:09,660 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2020-07-07 10:59:09,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-07-07 10:59:09,661 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 370 [2020-07-07 10:59:09,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:59:09,664 INFO L225 Difference]: With dead ends: 188 [2020-07-07 10:59:09,664 INFO L226 Difference]: Without dead ends: 184 [2020-07-07 10:59:09,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2755 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4513, Invalid=7697, Unknown=0, NotChecked=0, Total=12210 [2020-07-07 10:59:09,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-07-07 10:59:09,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2020-07-07 10:59:09,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-07-07 10:59:09,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 190 transitions. [2020-07-07 10:59:09,672 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 190 transitions. Word has length 370 [2020-07-07 10:59:09,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:59:09,673 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 190 transitions. [2020-07-07 10:59:09,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-07-07 10:59:09,673 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 190 transitions. [2020-07-07 10:59:09,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-07-07 10:59:09,676 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:59:09,676 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:59:09,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2020-07-07 10:59:09,891 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:59:09,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:59:09,892 INFO L82 PathProgramCache]: Analyzing trace with hash -148058983, now seen corresponding path program 52 times [2020-07-07 10:59:09,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:59:09,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948183064] [2020-07-07 10:59:09,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:59:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:16,765 INFO L134 CoverageAnalysis]: Checked inductivity of 9490 backedges. 0 proven. 4082 refuted. 0 times theorem prover too weak. 5408 trivial. 0 not checked. [2020-07-07 10:59:16,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948183064] [2020-07-07 10:59:16,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613212311] [2020-07-07 10:59:16,767 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:59:16,916 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 10:59:16,916 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:59:16,921 INFO L264 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 108 conjunts are in the unsatisfiable core [2020-07-07 10:59:16,925 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:59:17,135 INFO L134 CoverageAnalysis]: Checked inductivity of 9490 backedges. 0 proven. 4082 refuted. 0 times theorem prover too weak. 5408 trivial. 0 not checked. [2020-07-07 10:59:17,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:59:17,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 59 [2020-07-07 10:59:17,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659705508] [2020-07-07 10:59:17,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-07-07 10:59:17,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:59:17,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-07-07 10:59:17,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1547, Invalid=1875, Unknown=0, NotChecked=0, Total=3422 [2020-07-07 10:59:17,138 INFO L87 Difference]: Start difference. First operand 182 states and 190 transitions. Second operand 59 states. [2020-07-07 10:59:18,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:59:18,661 INFO L93 Difference]: Finished difference Result 191 states and 201 transitions. [2020-07-07 10:59:18,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-07-07 10:59:18,662 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 377 [2020-07-07 10:59:18,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:59:18,664 INFO L225 Difference]: With dead ends: 191 [2020-07-07 10:59:18,664 INFO L226 Difference]: Without dead ends: 187 [2020-07-07 10:59:18,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2861 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4679, Invalid=7977, Unknown=0, NotChecked=0, Total=12656 [2020-07-07 10:59:18,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-07-07 10:59:18,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2020-07-07 10:59:18,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-07-07 10:59:18,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 193 transitions. [2020-07-07 10:59:18,671 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 193 transitions. Word has length 377 [2020-07-07 10:59:18,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:59:18,672 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 193 transitions. [2020-07-07 10:59:18,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-07-07 10:59:18,672 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 193 transitions. [2020-07-07 10:59:18,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-07-07 10:59:18,674 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:59:18,674 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:59:18,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:59:18,888 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:59:18,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:59:18,889 INFO L82 PathProgramCache]: Analyzing trace with hash 2088040944, now seen corresponding path program 53 times [2020-07-07 10:59:18,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:59:18,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293704109] [2020-07-07 10:59:18,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:59:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:25,219 INFO L134 CoverageAnalysis]: Checked inductivity of 9858 backedges. 0 proven. 4240 refuted. 0 times theorem prover too weak. 5618 trivial. 0 not checked. [2020-07-07 10:59:25,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293704109] [2020-07-07 10:59:25,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719999407] [2020-07-07 10:59:25,220 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:59:25,426 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2020-07-07 10:59:25,426 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:59:25,432 INFO L264 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 110 conjunts are in the unsatisfiable core [2020-07-07 10:59:25,436 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:59:25,681 INFO L134 CoverageAnalysis]: Checked inductivity of 9858 backedges. 0 proven. 4240 refuted. 0 times theorem prover too weak. 5618 trivial. 0 not checked. [2020-07-07 10:59:25,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:59:25,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 60 [2020-07-07 10:59:25,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811318484] [2020-07-07 10:59:25,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-07-07 10:59:25,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:59:25,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-07-07 10:59:25,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1603, Invalid=1937, Unknown=0, NotChecked=0, Total=3540 [2020-07-07 10:59:25,684 INFO L87 Difference]: Start difference. First operand 185 states and 193 transitions. Second operand 60 states. [2020-07-07 10:59:27,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:59:27,249 INFO L93 Difference]: Finished difference Result 194 states and 204 transitions. [2020-07-07 10:59:27,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-07-07 10:59:27,250 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 384 [2020-07-07 10:59:27,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:59:27,251 INFO L225 Difference]: With dead ends: 194 [2020-07-07 10:59:27,252 INFO L226 Difference]: Without dead ends: 190 [2020-07-07 10:59:27,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2969 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4848, Invalid=8262, Unknown=0, NotChecked=0, Total=13110 [2020-07-07 10:59:27,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-07-07 10:59:27,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2020-07-07 10:59:27,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-07-07 10:59:27,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 196 transitions. [2020-07-07 10:59:27,259 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 196 transitions. Word has length 384 [2020-07-07 10:59:27,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:59:27,260 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 196 transitions. [2020-07-07 10:59:27,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-07-07 10:59:27,260 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 196 transitions. [2020-07-07 10:59:27,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-07-07 10:59:27,262 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:59:27,263 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:59:27,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2020-07-07 10:59:27,476 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:59:27,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:59:27,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1685456465, now seen corresponding path program 54 times [2020-07-07 10:59:27,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:59:27,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726861253] [2020-07-07 10:59:27,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:59:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10233 backedges. 0 proven. 4401 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2020-07-07 10:59:34,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726861253] [2020-07-07 10:59:34,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896097778] [2020-07-07 10:59:34,372 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:59:34,574 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2020-07-07 10:59:34,575 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:59:34,582 INFO L264 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 112 conjunts are in the unsatisfiable core [2020-07-07 10:59:34,586 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:59:34,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10233 backedges. 0 proven. 4401 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2020-07-07 10:59:34,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:59:34,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 61 [2020-07-07 10:59:34,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37985866] [2020-07-07 10:59:34,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-07-07 10:59:34,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:59:34,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-07-07 10:59:34,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1660, Invalid=2000, Unknown=0, NotChecked=0, Total=3660 [2020-07-07 10:59:34,793 INFO L87 Difference]: Start difference. First operand 188 states and 196 transitions. Second operand 61 states. [2020-07-07 10:59:36,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:59:36,398 INFO L93 Difference]: Finished difference Result 197 states and 207 transitions. [2020-07-07 10:59:36,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-07-07 10:59:36,399 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 391 [2020-07-07 10:59:36,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:59:36,401 INFO L225 Difference]: With dead ends: 197 [2020-07-07 10:59:36,401 INFO L226 Difference]: Without dead ends: 193 [2020-07-07 10:59:36,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3079 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=5020, Invalid=8552, Unknown=0, NotChecked=0, Total=13572 [2020-07-07 10:59:36,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-07-07 10:59:36,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 191. [2020-07-07 10:59:36,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-07-07 10:59:36,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 199 transitions. [2020-07-07 10:59:36,409 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 199 transitions. Word has length 391 [2020-07-07 10:59:36,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:59:36,410 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 199 transitions. [2020-07-07 10:59:36,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-07-07 10:59:36,410 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 199 transitions. [2020-07-07 10:59:36,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-07-07 10:59:36,413 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:59:36,413 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:59:36,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-07-07 10:59:36,627 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:59:36,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:59:36,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1628873638, now seen corresponding path program 55 times [2020-07-07 10:59:36,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:59:36,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594058911] [2020-07-07 10:59:36,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:59:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:43,685 INFO L134 CoverageAnalysis]: Checked inductivity of 10615 backedges. 0 proven. 4565 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2020-07-07 10:59:43,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594058911] [2020-07-07 10:59:43,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163788999] [2020-07-07 10:59:43,685 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:59:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:43,839 INFO L264 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 114 conjunts are in the unsatisfiable core [2020-07-07 10:59:43,843 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:59:44,113 INFO L134 CoverageAnalysis]: Checked inductivity of 10615 backedges. 0 proven. 4565 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2020-07-07 10:59:44,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:59:44,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 62 [2020-07-07 10:59:44,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109024640] [2020-07-07 10:59:44,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-07-07 10:59:44,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:59:44,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-07-07 10:59:44,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1718, Invalid=2064, Unknown=0, NotChecked=0, Total=3782 [2020-07-07 10:59:44,116 INFO L87 Difference]: Start difference. First operand 191 states and 199 transitions. Second operand 62 states. [2020-07-07 10:59:45,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:59:45,838 INFO L93 Difference]: Finished difference Result 200 states and 210 transitions. [2020-07-07 10:59:45,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-07-07 10:59:45,839 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 398 [2020-07-07 10:59:45,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:59:45,841 INFO L225 Difference]: With dead ends: 200 [2020-07-07 10:59:45,841 INFO L226 Difference]: Without dead ends: 196 [2020-07-07 10:59:45,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3191 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5195, Invalid=8847, Unknown=0, NotChecked=0, Total=14042 [2020-07-07 10:59:45,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-07-07 10:59:45,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2020-07-07 10:59:45,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-07-07 10:59:45,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 202 transitions. [2020-07-07 10:59:45,847 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 202 transitions. Word has length 398 [2020-07-07 10:59:45,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:59:45,848 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 202 transitions. [2020-07-07 10:59:45,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-07-07 10:59:45,848 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 202 transitions. [2020-07-07 10:59:45,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-07-07 10:59:45,851 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:59:45,851 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:59:46,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:59:46,067 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:59:46,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:59:46,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1214763067, now seen corresponding path program 56 times [2020-07-07 10:59:46,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:59:46,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035006957] [2020-07-07 10:59:46,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:59:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:46,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:53,630 INFO L134 CoverageAnalysis]: Checked inductivity of 11004 backedges. 0 proven. 4732 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2020-07-07 10:59:53,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035006957] [2020-07-07 10:59:53,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791070168] [2020-07-07 10:59:53,631 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:59:53,791 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 10:59:53,792 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:59:53,799 INFO L264 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 116 conjunts are in the unsatisfiable core [2020-07-07 10:59:53,806 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:59:54,082 INFO L134 CoverageAnalysis]: Checked inductivity of 11004 backedges. 0 proven. 4732 refuted. 0 times theorem prover too weak. 6272 trivial. 0 not checked. [2020-07-07 10:59:54,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:59:54,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 63 [2020-07-07 10:59:54,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016288778] [2020-07-07 10:59:54,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-07-07 10:59:54,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:59:54,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-07-07 10:59:54,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1777, Invalid=2129, Unknown=0, NotChecked=0, Total=3906 [2020-07-07 10:59:54,085 INFO L87 Difference]: Start difference. First operand 194 states and 202 transitions. Second operand 63 states. [2020-07-07 10:59:55,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:59:55,895 INFO L93 Difference]: Finished difference Result 203 states and 213 transitions. [2020-07-07 10:59:55,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-07-07 10:59:55,896 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 405 [2020-07-07 10:59:55,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:59:55,898 INFO L225 Difference]: With dead ends: 203 [2020-07-07 10:59:55,898 INFO L226 Difference]: Without dead ends: 199 [2020-07-07 10:59:55,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3305 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5373, Invalid=9147, Unknown=0, NotChecked=0, Total=14520 [2020-07-07 10:59:55,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-07-07 10:59:55,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 197. [2020-07-07 10:59:55,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-07-07 10:59:55,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 205 transitions. [2020-07-07 10:59:55,907 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 205 transitions. Word has length 405 [2020-07-07 10:59:55,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:59:55,908 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 205 transitions. [2020-07-07 10:59:55,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-07-07 10:59:55,908 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 205 transitions. [2020-07-07 10:59:55,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-07-07 10:59:55,911 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:59:55,912 INFO L422 BasicCegarLoop]: trace histogram [58, 58, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:59:56,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-07-07 10:59:56,126 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:59:56,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:59:56,127 INFO L82 PathProgramCache]: Analyzing trace with hash -383752764, now seen corresponding path program 57 times [2020-07-07 10:59:56,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:59:56,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595200173] [2020-07-07 10:59:56,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:59:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:59:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:04,136 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 4902 refuted. 0 times theorem prover too weak. 6498 trivial. 0 not checked. [2020-07-07 11:00:04,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595200173] [2020-07-07 11:00:04,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544763804] [2020-07-07 11:00:04,137 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:00:04,364 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2020-07-07 11:00:04,364 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:00:04,373 INFO L264 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 118 conjunts are in the unsatisfiable core [2020-07-07 11:00:04,377 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:00:04,608 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 4902 refuted. 0 times theorem prover too weak. 6498 trivial. 0 not checked. [2020-07-07 11:00:04,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:00:04,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 64 [2020-07-07 11:00:04,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854566767] [2020-07-07 11:00:04,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-07-07 11:00:04,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:00:04,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-07-07 11:00:04,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1837, Invalid=2195, Unknown=0, NotChecked=0, Total=4032 [2020-07-07 11:00:04,611 INFO L87 Difference]: Start difference. First operand 197 states and 205 transitions. Second operand 64 states. [2020-07-07 11:00:06,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:00:06,362 INFO L93 Difference]: Finished difference Result 206 states and 216 transitions. [2020-07-07 11:00:06,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-07-07 11:00:06,363 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 412 [2020-07-07 11:00:06,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:00:06,365 INFO L225 Difference]: With dead ends: 206 [2020-07-07 11:00:06,365 INFO L226 Difference]: Without dead ends: 202 [2020-07-07 11:00:06,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3421 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5554, Invalid=9452, Unknown=0, NotChecked=0, Total=15006 [2020-07-07 11:00:06,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-07-07 11:00:06,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2020-07-07 11:00:06,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-07-07 11:00:06,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 208 transitions. [2020-07-07 11:00:06,373 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 208 transitions. Word has length 412 [2020-07-07 11:00:06,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:00:06,374 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 208 transitions. [2020-07-07 11:00:06,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-07-07 11:00:06,374 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 208 transitions. [2020-07-07 11:00:06,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-07-07 11:00:06,377 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:00:06,377 INFO L422 BasicCegarLoop]: trace histogram [59, 59, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:00:06,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:00:06,591 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:00:06,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:00:06,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1310199515, now seen corresponding path program 58 times [2020-07-07 11:00:06,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:00:06,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287159738] [2020-07-07 11:00:06,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:00:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:15,581 INFO L134 CoverageAnalysis]: Checked inductivity of 11803 backedges. 0 proven. 5075 refuted. 0 times theorem prover too weak. 6728 trivial. 0 not checked. [2020-07-07 11:00:15,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287159738] [2020-07-07 11:00:15,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983293275] [2020-07-07 11:00:15,582 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:00:15,790 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:00:15,791 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:00:15,798 INFO L264 TraceCheckSpWp]: Trace formula consists of 1145 conjuncts, 120 conjunts are in the unsatisfiable core [2020-07-07 11:00:15,804 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:00:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 11803 backedges. 0 proven. 5075 refuted. 0 times theorem prover too weak. 6728 trivial. 0 not checked. [2020-07-07 11:00:16,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:00:16,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 65 [2020-07-07 11:00:16,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909950659] [2020-07-07 11:00:16,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-07-07 11:00:16,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:00:16,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-07-07 11:00:16,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1898, Invalid=2262, Unknown=0, NotChecked=0, Total=4160 [2020-07-07 11:00:16,085 INFO L87 Difference]: Start difference. First operand 200 states and 208 transitions. Second operand 65 states. [2020-07-07 11:00:17,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:00:17,973 INFO L93 Difference]: Finished difference Result 209 states and 219 transitions. [2020-07-07 11:00:17,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-07-07 11:00:17,974 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 419 [2020-07-07 11:00:17,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:00:17,977 INFO L225 Difference]: With dead ends: 209 [2020-07-07 11:00:17,977 INFO L226 Difference]: Without dead ends: 205 [2020-07-07 11:00:17,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3539 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5738, Invalid=9762, Unknown=0, NotChecked=0, Total=15500 [2020-07-07 11:00:17,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-07-07 11:00:17,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2020-07-07 11:00:17,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-07 11:00:17,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 211 transitions. [2020-07-07 11:00:17,986 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 211 transitions. Word has length 419 [2020-07-07 11:00:17,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:00:17,987 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 211 transitions. [2020-07-07 11:00:17,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-07-07 11:00:17,987 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 211 transitions. [2020-07-07 11:00:17,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2020-07-07 11:00:17,990 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:00:17,991 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:00:18,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-07-07 11:00:18,199 INFO L427 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:00:18,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:00:18,200 INFO L82 PathProgramCache]: Analyzing trace with hash -783714770, now seen corresponding path program 59 times [2020-07-07 11:00:18,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:00:18,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314069452] [2020-07-07 11:00:18,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:00:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:28,132 INFO L134 CoverageAnalysis]: Checked inductivity of 12213 backedges. 0 proven. 5251 refuted. 0 times theorem prover too weak. 6962 trivial. 0 not checked. [2020-07-07 11:00:28,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314069452] [2020-07-07 11:00:28,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27610723] [2020-07-07 11:00:28,133 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:00:28,361 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2020-07-07 11:00:28,361 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:00:28,372 INFO L264 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 122 conjunts are in the unsatisfiable core [2020-07-07 11:00:28,376 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:00:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 12213 backedges. 0 proven. 5251 refuted. 0 times theorem prover too weak. 6962 trivial. 0 not checked. [2020-07-07 11:00:28,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:00:28,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 66 [2020-07-07 11:00:28,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19010081] [2020-07-07 11:00:28,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-07-07 11:00:28,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:00:28,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-07-07 11:00:28,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1960, Invalid=2330, Unknown=0, NotChecked=0, Total=4290 [2020-07-07 11:00:28,671 INFO L87 Difference]: Start difference. First operand 203 states and 211 transitions. Second operand 66 states. [2020-07-07 11:00:30,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:00:30,632 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2020-07-07 11:00:30,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-07-07 11:00:30,633 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 426 [2020-07-07 11:00:30,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:00:30,635 INFO L225 Difference]: With dead ends: 212 [2020-07-07 11:00:30,635 INFO L226 Difference]: Without dead ends: 208 [2020-07-07 11:00:30,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3659 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5925, Invalid=10077, Unknown=0, NotChecked=0, Total=16002 [2020-07-07 11:00:30,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-07-07 11:00:30,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2020-07-07 11:00:30,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-07-07 11:00:30,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 214 transitions. [2020-07-07 11:00:30,645 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 214 transitions. Word has length 426 [2020-07-07 11:00:30,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:00:30,645 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 214 transitions. [2020-07-07 11:00:30,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-07-07 11:00:30,646 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 214 transitions. [2020-07-07 11:00:30,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-07-07 11:00:30,649 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:00:30,649 INFO L422 BasicCegarLoop]: trace histogram [61, 61, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:00:30,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:00:30,863 INFO L427 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:00:30,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:00:30,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1486211343, now seen corresponding path program 60 times [2020-07-07 11:00:30,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:00:30,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884605925] [2020-07-07 11:00:30,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:00:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 12630 backedges. 0 proven. 5430 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2020-07-07 11:00:41,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884605925] [2020-07-07 11:00:41,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137853579] [2020-07-07 11:00:41,185 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:00:41,416 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2020-07-07 11:00:41,416 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:00:41,426 INFO L264 TraceCheckSpWp]: Trace formula consists of 1183 conjuncts, 124 conjunts are in the unsatisfiable core [2020-07-07 11:00:41,433 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:00:41,804 INFO L134 CoverageAnalysis]: Checked inductivity of 12630 backedges. 0 proven. 5430 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2020-07-07 11:00:41,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:00:41,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 67 [2020-07-07 11:00:41,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027087016] [2020-07-07 11:00:41,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-07-07 11:00:41,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:00:41,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-07-07 11:00:41,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2023, Invalid=2399, Unknown=0, NotChecked=0, Total=4422 [2020-07-07 11:00:41,807 INFO L87 Difference]: Start difference. First operand 206 states and 214 transitions. Second operand 67 states. [2020-07-07 11:00:43,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:00:43,793 INFO L93 Difference]: Finished difference Result 215 states and 225 transitions. [2020-07-07 11:00:43,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-07-07 11:00:43,794 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 433 [2020-07-07 11:00:43,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:00:43,796 INFO L225 Difference]: With dead ends: 215 [2020-07-07 11:00:43,796 INFO L226 Difference]: Without dead ends: 211 [2020-07-07 11:00:43,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3781 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=6115, Invalid=10397, Unknown=0, NotChecked=0, Total=16512 [2020-07-07 11:00:43,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-07-07 11:00:43,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2020-07-07 11:00:43,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-07-07 11:00:43,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 217 transitions. [2020-07-07 11:00:43,806 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 217 transitions. Word has length 433 [2020-07-07 11:00:43,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:00:43,807 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 217 transitions. [2020-07-07 11:00:43,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-07-07 11:00:43,807 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 217 transitions. [2020-07-07 11:00:43,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-07-07 11:00:43,810 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:00:43,811 INFO L422 BasicCegarLoop]: trace histogram [62, 62, 61, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:00:44,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2020-07-07 11:00:44,025 INFO L427 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:00:44,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:00:44,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1191973480, now seen corresponding path program 61 times [2020-07-07 11:00:44,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:00:44,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689359984] [2020-07-07 11:00:44,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:00:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:49,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:53,220 INFO L134 CoverageAnalysis]: Checked inductivity of 13054 backedges. 0 proven. 5612 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked. [2020-07-07 11:00:53,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689359984] [2020-07-07 11:00:53,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256067021] [2020-07-07 11:00:53,221 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:00:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:53,391 INFO L264 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 126 conjunts are in the unsatisfiable core [2020-07-07 11:00:53,395 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:00:53,639 INFO L134 CoverageAnalysis]: Checked inductivity of 13054 backedges. 0 proven. 5612 refuted. 0 times theorem prover too weak. 7442 trivial. 0 not checked. [2020-07-07 11:00:53,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:00:53,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 68 [2020-07-07 11:00:53,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976796435] [2020-07-07 11:00:53,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-07-07 11:00:53,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:00:53,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-07-07 11:00:53,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2087, Invalid=2469, Unknown=0, NotChecked=0, Total=4556 [2020-07-07 11:00:53,641 INFO L87 Difference]: Start difference. First operand 209 states and 217 transitions. Second operand 68 states. [2020-07-07 11:00:55,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:00:55,704 INFO L93 Difference]: Finished difference Result 218 states and 228 transitions. [2020-07-07 11:00:55,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-07-07 11:00:55,705 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 440 [2020-07-07 11:00:55,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:00:55,706 INFO L225 Difference]: With dead ends: 218 [2020-07-07 11:00:55,706 INFO L226 Difference]: Without dead ends: 214 [2020-07-07 11:00:55,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 564 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3905 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=6308, Invalid=10722, Unknown=0, NotChecked=0, Total=17030 [2020-07-07 11:00:55,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-07-07 11:00:55,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2020-07-07 11:00:55,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-07-07 11:00:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 220 transitions. [2020-07-07 11:00:55,714 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 220 transitions. Word has length 440 [2020-07-07 11:00:55,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:00:55,715 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 220 transitions. [2020-07-07 11:00:55,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-07-07 11:00:55,715 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 220 transitions. [2020-07-07 11:00:55,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-07-07 11:00:55,718 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:00:55,718 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:00:55,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:00:55,932 INFO L427 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:00:55,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:00:55,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1349564409, now seen corresponding path program 62 times [2020-07-07 11:00:55,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:00:55,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486313361] [2020-07-07 11:00:55,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:00:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:00:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:06,952 INFO L134 CoverageAnalysis]: Checked inductivity of 13485 backedges. 0 proven. 5797 refuted. 0 times theorem prover too weak. 7688 trivial. 0 not checked. [2020-07-07 11:01:06,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486313361] [2020-07-07 11:01:06,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885320661] [2020-07-07 11:01:06,953 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:01:07,129 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:01:07,129 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:01:07,136 INFO L264 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 128 conjunts are in the unsatisfiable core [2020-07-07 11:01:07,142 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:01:07,421 INFO L134 CoverageAnalysis]: Checked inductivity of 13485 backedges. 0 proven. 5797 refuted. 0 times theorem prover too weak. 7688 trivial. 0 not checked. [2020-07-07 11:01:07,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:01:07,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 69 [2020-07-07 11:01:07,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215485821] [2020-07-07 11:01:07,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-07-07 11:01:07,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:01:07,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-07-07 11:01:07,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2152, Invalid=2540, Unknown=0, NotChecked=0, Total=4692 [2020-07-07 11:01:07,425 INFO L87 Difference]: Start difference. First operand 212 states and 220 transitions. Second operand 69 states. [2020-07-07 11:01:09,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:01:09,557 INFO L93 Difference]: Finished difference Result 221 states and 231 transitions. [2020-07-07 11:01:09,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-07-07 11:01:09,558 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 447 [2020-07-07 11:01:09,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:01:09,561 INFO L225 Difference]: With dead ends: 221 [2020-07-07 11:01:09,561 INFO L226 Difference]: Without dead ends: 217 [2020-07-07 11:01:09,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4031 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=6504, Invalid=11052, Unknown=0, NotChecked=0, Total=17556 [2020-07-07 11:01:09,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-07-07 11:01:09,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2020-07-07 11:01:09,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-07-07 11:01:09,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 223 transitions. [2020-07-07 11:01:09,569 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 223 transitions. Word has length 447 [2020-07-07 11:01:09,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:01:09,570 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 223 transitions. [2020-07-07 11:01:09,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-07-07 11:01:09,570 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 223 transitions. [2020-07-07 11:01:09,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-07-07 11:01:09,573 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:01:09,573 INFO L422 BasicCegarLoop]: trace histogram [64, 64, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:01:09,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-07-07 11:01:09,776 INFO L427 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:01:09,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:01:09,777 INFO L82 PathProgramCache]: Analyzing trace with hash 252652546, now seen corresponding path program 63 times [2020-07-07 11:01:09,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:01:09,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143263622] [2020-07-07 11:01:09,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:01:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:19,892 INFO L134 CoverageAnalysis]: Checked inductivity of 13923 backedges. 0 proven. 5985 refuted. 0 times theorem prover too weak. 7938 trivial. 0 not checked. [2020-07-07 11:01:19,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143263622] [2020-07-07 11:01:19,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461069350] [2020-07-07 11:01:19,893 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:01:20,145 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2020-07-07 11:01:20,145 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:01:20,153 INFO L264 TraceCheckSpWp]: Trace formula consists of 1240 conjuncts, 130 conjunts are in the unsatisfiable core [2020-07-07 11:01:20,158 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:01:20,511 INFO L134 CoverageAnalysis]: Checked inductivity of 13923 backedges. 0 proven. 5985 refuted. 0 times theorem prover too weak. 7938 trivial. 0 not checked. [2020-07-07 11:01:20,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:01:20,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 70 [2020-07-07 11:01:20,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505995019] [2020-07-07 11:01:20,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-07-07 11:01:20,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:01:20,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-07-07 11:01:20,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2218, Invalid=2612, Unknown=0, NotChecked=0, Total=4830 [2020-07-07 11:01:20,521 INFO L87 Difference]: Start difference. First operand 215 states and 223 transitions. Second operand 70 states. [2020-07-07 11:01:22,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:01:22,706 INFO L93 Difference]: Finished difference Result 224 states and 234 transitions. [2020-07-07 11:01:22,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-07-07 11:01:22,707 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 454 [2020-07-07 11:01:22,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:01:22,708 INFO L225 Difference]: With dead ends: 224 [2020-07-07 11:01:22,708 INFO L226 Difference]: Without dead ends: 220 [2020-07-07 11:01:22,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4159 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=6703, Invalid=11387, Unknown=0, NotChecked=0, Total=18090 [2020-07-07 11:01:22,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-07-07 11:01:22,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2020-07-07 11:01:22,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-07-07 11:01:22,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 226 transitions. [2020-07-07 11:01:22,717 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 226 transitions. Word has length 454 [2020-07-07 11:01:22,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:01:22,717 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 226 transitions. [2020-07-07 11:01:22,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-07-07 11:01:22,718 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 226 transitions. [2020-07-07 11:01:22,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-07-07 11:01:22,720 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:01:22,721 INFO L422 BasicCegarLoop]: trace histogram [65, 65, 64, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:01:22,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:01:22,922 INFO L427 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:01:22,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:01:22,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1411899933, now seen corresponding path program 64 times [2020-07-07 11:01:22,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:01:22,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163325348] [2020-07-07 11:01:22,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:01:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:33,360 INFO L134 CoverageAnalysis]: Checked inductivity of 14368 backedges. 0 proven. 6176 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2020-07-07 11:01:33,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163325348] [2020-07-07 11:01:33,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791419877] [2020-07-07 11:01:33,361 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:01:33,542 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:01:33,543 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:01:33,549 INFO L264 TraceCheckSpWp]: Trace formula consists of 1259 conjuncts, 132 conjunts are in the unsatisfiable core [2020-07-07 11:01:33,554 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:01:33,884 INFO L134 CoverageAnalysis]: Checked inductivity of 14368 backedges. 0 proven. 6176 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2020-07-07 11:01:33,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:01:33,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 71 [2020-07-07 11:01:33,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525004490] [2020-07-07 11:01:33,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-07-07 11:01:33,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:01:33,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-07-07 11:01:33,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2285, Invalid=2685, Unknown=0, NotChecked=0, Total=4970 [2020-07-07 11:01:33,888 INFO L87 Difference]: Start difference. First operand 218 states and 226 transitions. Second operand 71 states. [2020-07-07 11:01:36,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:01:36,171 INFO L93 Difference]: Finished difference Result 227 states and 237 transitions. [2020-07-07 11:01:36,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-07-07 11:01:36,172 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 461 [2020-07-07 11:01:36,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:01:36,174 INFO L225 Difference]: With dead ends: 227 [2020-07-07 11:01:36,174 INFO L226 Difference]: Without dead ends: 223 [2020-07-07 11:01:36,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4289 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=6905, Invalid=11727, Unknown=0, NotChecked=0, Total=18632 [2020-07-07 11:01:36,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-07-07 11:01:36,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2020-07-07 11:01:36,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-07-07 11:01:36,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 229 transitions. [2020-07-07 11:01:36,181 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 229 transitions. Word has length 461 [2020-07-07 11:01:36,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:01:36,182 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 229 transitions. [2020-07-07 11:01:36,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-07-07 11:01:36,182 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 229 transitions. [2020-07-07 11:01:36,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-07-07 11:01:36,185 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:01:36,185 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:01:36,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-07-07 11:01:36,401 INFO L427 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:01:36,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:01:36,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1911198060, now seen corresponding path program 65 times [2020-07-07 11:01:36,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:01:36,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692034884] [2020-07-07 11:01:36,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:01:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:47,290 INFO L134 CoverageAnalysis]: Checked inductivity of 14820 backedges. 0 proven. 6370 refuted. 0 times theorem prover too weak. 8450 trivial. 0 not checked. [2020-07-07 11:01:47,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692034884] [2020-07-07 11:01:47,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517754446] [2020-07-07 11:01:47,291 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:01:47,565 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2020-07-07 11:01:47,565 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:01:47,573 INFO L264 TraceCheckSpWp]: Trace formula consists of 1278 conjuncts, 134 conjunts are in the unsatisfiable core [2020-07-07 11:01:47,578 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:01:47,887 INFO L134 CoverageAnalysis]: Checked inductivity of 14820 backedges. 0 proven. 6370 refuted. 0 times theorem prover too weak. 8450 trivial. 0 not checked. [2020-07-07 11:01:47,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:01:47,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 72 [2020-07-07 11:01:47,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212519645] [2020-07-07 11:01:47,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-07-07 11:01:47,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:01:47,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-07-07 11:01:47,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2353, Invalid=2759, Unknown=0, NotChecked=0, Total=5112 [2020-07-07 11:01:47,890 INFO L87 Difference]: Start difference. First operand 221 states and 229 transitions. Second operand 72 states. [2020-07-07 11:01:50,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:01:50,263 INFO L93 Difference]: Finished difference Result 230 states and 240 transitions. [2020-07-07 11:01:50,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-07-07 11:01:50,264 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 468 [2020-07-07 11:01:50,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:01:50,266 INFO L225 Difference]: With dead ends: 230 [2020-07-07 11:01:50,266 INFO L226 Difference]: Without dead ends: 226 [2020-07-07 11:01:50,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4421 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=7110, Invalid=12072, Unknown=0, NotChecked=0, Total=19182 [2020-07-07 11:01:50,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-07-07 11:01:50,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 224. [2020-07-07 11:01:50,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-07-07 11:01:50,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 232 transitions. [2020-07-07 11:01:50,274 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 232 transitions. Word has length 468 [2020-07-07 11:01:50,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:01:50,275 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 232 transitions. [2020-07-07 11:01:50,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-07-07 11:01:50,275 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 232 transitions. [2020-07-07 11:01:50,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-07-07 11:01:50,278 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:01:50,278 INFO L422 BasicCegarLoop]: trace histogram [67, 67, 66, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:01:50,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2020-07-07 11:01:50,492 INFO L427 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:01:50,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:01:50,493 INFO L82 PathProgramCache]: Analyzing trace with hash -495672013, now seen corresponding path program 66 times [2020-07-07 11:01:50,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:01:50,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169547731] [2020-07-07 11:01:50,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:01:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:01:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:02,018 INFO L134 CoverageAnalysis]: Checked inductivity of 15279 backedges. 0 proven. 6567 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2020-07-07 11:02:02,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169547731] [2020-07-07 11:02:02,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596903437] [2020-07-07 11:02:02,019 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:02:02,301 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2020-07-07 11:02:02,301 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:02:02,308 INFO L264 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 136 conjunts are in the unsatisfiable core [2020-07-07 11:02:02,313 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:02:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 15279 backedges. 0 proven. 6567 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2020-07-07 11:02:02,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:02:02,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 73 [2020-07-07 11:02:02,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246138276] [2020-07-07 11:02:02,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-07-07 11:02:02,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:02:02,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-07-07 11:02:02,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2422, Invalid=2834, Unknown=0, NotChecked=0, Total=5256 [2020-07-07 11:02:02,595 INFO L87 Difference]: Start difference. First operand 224 states and 232 transitions. Second operand 73 states. [2020-07-07 11:02:04,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:02:04,962 INFO L93 Difference]: Finished difference Result 233 states and 243 transitions. [2020-07-07 11:02:04,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-07-07 11:02:04,963 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 475 [2020-07-07 11:02:04,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:02:04,965 INFO L225 Difference]: With dead ends: 233 [2020-07-07 11:02:04,965 INFO L226 Difference]: Without dead ends: 229 [2020-07-07 11:02:04,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 609 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4555 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=7318, Invalid=12422, Unknown=0, NotChecked=0, Total=19740 [2020-07-07 11:02:04,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-07-07 11:02:04,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 227. [2020-07-07 11:02:04,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-07-07 11:02:04,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 235 transitions. [2020-07-07 11:02:04,973 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 235 transitions. Word has length 475 [2020-07-07 11:02:04,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:02:04,974 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 235 transitions. [2020-07-07 11:02:04,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-07-07 11:02:04,974 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 235 transitions. [2020-07-07 11:02:04,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-07-07 11:02:04,976 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:02:04,976 INFO L422 BasicCegarLoop]: trace histogram [68, 68, 67, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:02:05,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-07-07 11:02:05,177 INFO L427 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:02:05,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:02:05,178 INFO L82 PathProgramCache]: Analyzing trace with hash -785023530, now seen corresponding path program 67 times [2020-07-07 11:02:05,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:02:05,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004328583] [2020-07-07 11:02:05,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:02:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:17,092 INFO L134 CoverageAnalysis]: Checked inductivity of 15745 backedges. 0 proven. 6767 refuted. 0 times theorem prover too weak. 8978 trivial. 0 not checked. [2020-07-07 11:02:17,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004328583] [2020-07-07 11:02:17,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421084555] [2020-07-07 11:02:17,093 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:02:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:17,279 INFO L264 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 138 conjunts are in the unsatisfiable core [2020-07-07 11:02:17,283 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:02:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 15745 backedges. 0 proven. 6767 refuted. 0 times theorem prover too weak. 8978 trivial. 0 not checked. [2020-07-07 11:02:17,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:02:17,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 74 [2020-07-07 11:02:17,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078516607] [2020-07-07 11:02:17,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-07-07 11:02:17,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:02:17,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-07-07 11:02:17,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2492, Invalid=2910, Unknown=0, NotChecked=0, Total=5402 [2020-07-07 11:02:17,566 INFO L87 Difference]: Start difference. First operand 227 states and 235 transitions. Second operand 74 states. [2020-07-07 11:02:19,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:02:19,967 INFO L93 Difference]: Finished difference Result 236 states and 246 transitions. [2020-07-07 11:02:19,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-07-07 11:02:19,968 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 482 [2020-07-07 11:02:19,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:02:19,970 INFO L225 Difference]: With dead ends: 236 [2020-07-07 11:02:19,970 INFO L226 Difference]: Without dead ends: 232 [2020-07-07 11:02:19,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 618 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4691 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=7529, Invalid=12777, Unknown=0, NotChecked=0, Total=20306 [2020-07-07 11:02:19,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-07-07 11:02:19,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2020-07-07 11:02:19,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-07-07 11:02:19,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 238 transitions. [2020-07-07 11:02:19,979 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 238 transitions. Word has length 482 [2020-07-07 11:02:19,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:02:19,979 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 238 transitions. [2020-07-07 11:02:19,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-07-07 11:02:19,980 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 238 transitions. [2020-07-07 11:02:19,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-07-07 11:02:19,983 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:02:19,983 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 68, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:02:20,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:02:20,190 INFO L427 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:02:20,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:02:20,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1700147529, now seen corresponding path program 68 times [2020-07-07 11:02:20,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:02:20,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310858098] [2020-07-07 11:02:20,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:02:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:32,822 INFO L134 CoverageAnalysis]: Checked inductivity of 16218 backedges. 0 proven. 6970 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2020-07-07 11:02:32,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310858098] [2020-07-07 11:02:32,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554370666] [2020-07-07 11:02:32,822 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:02:33,003 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:02:33,003 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:02:33,008 INFO L264 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 140 conjunts are in the unsatisfiable core [2020-07-07 11:02:33,012 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:02:33,381 INFO L134 CoverageAnalysis]: Checked inductivity of 16218 backedges. 0 proven. 6970 refuted. 0 times theorem prover too weak. 9248 trivial. 0 not checked. [2020-07-07 11:02:33,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:02:33,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 75 [2020-07-07 11:02:33,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715955308] [2020-07-07 11:02:33,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-07-07 11:02:33,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:02:33,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-07-07 11:02:33,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2563, Invalid=2987, Unknown=0, NotChecked=0, Total=5550 [2020-07-07 11:02:33,385 INFO L87 Difference]: Start difference. First operand 230 states and 238 transitions. Second operand 75 states. [2020-07-07 11:02:35,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:02:35,939 INFO L93 Difference]: Finished difference Result 239 states and 249 transitions. [2020-07-07 11:02:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-07-07 11:02:35,940 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 489 [2020-07-07 11:02:35,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:02:35,942 INFO L225 Difference]: With dead ends: 239 [2020-07-07 11:02:35,942 INFO L226 Difference]: Without dead ends: 235 [2020-07-07 11:02:35,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4829 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=7743, Invalid=13137, Unknown=0, NotChecked=0, Total=20880 [2020-07-07 11:02:35,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-07-07 11:02:35,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2020-07-07 11:02:35,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-07-07 11:02:35,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 241 transitions. [2020-07-07 11:02:35,949 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 241 transitions. Word has length 489 [2020-07-07 11:02:35,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:02:35,949 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 241 transitions. [2020-07-07 11:02:35,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-07-07 11:02:35,949 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 241 transitions. [2020-07-07 11:02:35,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-07-07 11:02:35,951 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:02:35,952 INFO L422 BasicCegarLoop]: trace histogram [70, 70, 69, 69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:02:36,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2020-07-07 11:02:36,153 INFO L427 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:02:36,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:02:36,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1879092928, now seen corresponding path program 69 times [2020-07-07 11:02:36,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:02:36,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211848082] [2020-07-07 11:02:36,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:02:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:43,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:48,863 INFO L134 CoverageAnalysis]: Checked inductivity of 16698 backedges. 0 proven. 7176 refuted. 0 times theorem prover too weak. 9522 trivial. 0 not checked. [2020-07-07 11:02:48,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211848082] [2020-07-07 11:02:48,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070825627] [2020-07-07 11:02:48,864 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:02:49,143 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2020-07-07 11:02:49,143 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:02:49,150 INFO L264 TraceCheckSpWp]: Trace formula consists of 1354 conjuncts, 142 conjunts are in the unsatisfiable core [2020-07-07 11:02:49,155 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:02:49,459 INFO L134 CoverageAnalysis]: Checked inductivity of 16698 backedges. 0 proven. 7176 refuted. 0 times theorem prover too weak. 9522 trivial. 0 not checked. [2020-07-07 11:02:49,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:02:49,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 76 [2020-07-07 11:02:49,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902739090] [2020-07-07 11:02:49,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-07-07 11:02:49,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:02:49,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-07-07 11:02:49,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2635, Invalid=3065, Unknown=0, NotChecked=0, Total=5700 [2020-07-07 11:02:49,462 INFO L87 Difference]: Start difference. First operand 233 states and 241 transitions. Second operand 76 states. [2020-07-07 11:02:52,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:02:52,058 INFO L93 Difference]: Finished difference Result 242 states and 252 transitions. [2020-07-07 11:02:52,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-07-07 11:02:52,059 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 496 [2020-07-07 11:02:52,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:02:52,061 INFO L225 Difference]: With dead ends: 242 [2020-07-07 11:02:52,061 INFO L226 Difference]: Without dead ends: 238 [2020-07-07 11:02:52,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4969 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=7960, Invalid=13502, Unknown=0, NotChecked=0, Total=21462 [2020-07-07 11:02:52,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-07-07 11:02:52,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2020-07-07 11:02:52,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-07-07 11:02:52,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 244 transitions. [2020-07-07 11:02:52,068 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 244 transitions. Word has length 496 [2020-07-07 11:02:52,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:02:52,069 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 244 transitions. [2020-07-07 11:02:52,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-07-07 11:02:52,069 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 244 transitions. [2020-07-07 11:02:52,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2020-07-07 11:02:52,072 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:02:52,072 INFO L422 BasicCegarLoop]: trace histogram [71, 71, 70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:02:52,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:02:52,274 INFO L427 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:02:52,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:02:52,275 INFO L82 PathProgramCache]: Analyzing trace with hash 55387743, now seen corresponding path program 70 times [2020-07-07 11:02:52,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:02:52,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416863168] [2020-07-07 11:02:52,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:02:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:02:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:05,933 INFO L134 CoverageAnalysis]: Checked inductivity of 17185 backedges. 0 proven. 7385 refuted. 0 times theorem prover too weak. 9800 trivial. 0 not checked. [2020-07-07 11:03:05,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416863168] [2020-07-07 11:03:05,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377134513] [2020-07-07 11:03:05,934 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:03:06,124 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:03:06,125 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:03:06,133 INFO L264 TraceCheckSpWp]: Trace formula consists of 1373 conjuncts, 144 conjunts are in the unsatisfiable core [2020-07-07 11:03:06,138 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:03:06,494 INFO L134 CoverageAnalysis]: Checked inductivity of 17185 backedges. 0 proven. 7385 refuted. 0 times theorem prover too weak. 9800 trivial. 0 not checked. [2020-07-07 11:03:06,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:03:06,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 77 [2020-07-07 11:03:06,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431922920] [2020-07-07 11:03:06,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-07-07 11:03:06,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:03:06,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-07-07 11:03:06,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2708, Invalid=3144, Unknown=0, NotChecked=0, Total=5852 [2020-07-07 11:03:06,496 INFO L87 Difference]: Start difference. First operand 236 states and 244 transitions. Second operand 77 states. [2020-07-07 11:03:09,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:03:09,158 INFO L93 Difference]: Finished difference Result 245 states and 255 transitions. [2020-07-07 11:03:09,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-07-07 11:03:09,159 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 503 [2020-07-07 11:03:09,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:03:09,162 INFO L225 Difference]: With dead ends: 245 [2020-07-07 11:03:09,162 INFO L226 Difference]: Without dead ends: 241 [2020-07-07 11:03:09,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 645 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5111 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=8180, Invalid=13872, Unknown=0, NotChecked=0, Total=22052 [2020-07-07 11:03:09,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-07-07 11:03:09,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2020-07-07 11:03:09,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-07-07 11:03:09,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 247 transitions. [2020-07-07 11:03:09,174 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 247 transitions. Word has length 503 [2020-07-07 11:03:09,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:03:09,174 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 247 transitions. [2020-07-07 11:03:09,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-07-07 11:03:09,175 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 247 transitions. [2020-07-07 11:03:09,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2020-07-07 11:03:09,179 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:03:09,179 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 71, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:03:09,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2020-07-07 11:03:09,385 INFO L427 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:03:09,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:03:09,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1497928790, now seen corresponding path program 71 times [2020-07-07 11:03:09,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:03:09,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379253702] [2020-07-07 11:03:09,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:03:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:18,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:23,837 INFO L134 CoverageAnalysis]: Checked inductivity of 17679 backedges. 0 proven. 7597 refuted. 0 times theorem prover too weak. 10082 trivial. 0 not checked. [2020-07-07 11:03:23,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379253702] [2020-07-07 11:03:23,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264396266] [2020-07-07 11:03:23,838 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:03:24,129 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2020-07-07 11:03:24,130 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:03:24,144 INFO L264 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 146 conjunts are in the unsatisfiable core [2020-07-07 11:03:24,150 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:03:24,473 INFO L134 CoverageAnalysis]: Checked inductivity of 17679 backedges. 0 proven. 7597 refuted. 0 times theorem prover too weak. 10082 trivial. 0 not checked. [2020-07-07 11:03:24,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:03:24,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 78 [2020-07-07 11:03:24,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397978738] [2020-07-07 11:03:24,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-07-07 11:03:24,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:03:24,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-07-07 11:03:24,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2782, Invalid=3224, Unknown=0, NotChecked=0, Total=6006 [2020-07-07 11:03:24,475 INFO L87 Difference]: Start difference. First operand 239 states and 247 transitions. Second operand 78 states. [2020-07-07 11:03:27,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:03:27,239 INFO L93 Difference]: Finished difference Result 248 states and 258 transitions. [2020-07-07 11:03:27,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-07-07 11:03:27,240 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 510 [2020-07-07 11:03:27,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:03:27,242 INFO L225 Difference]: With dead ends: 248 [2020-07-07 11:03:27,242 INFO L226 Difference]: Without dead ends: 244 [2020-07-07 11:03:27,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 803 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5255 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=8403, Invalid=14247, Unknown=0, NotChecked=0, Total=22650 [2020-07-07 11:03:27,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-07-07 11:03:27,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 242. [2020-07-07 11:03:27,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-07-07 11:03:27,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 250 transitions. [2020-07-07 11:03:27,250 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 250 transitions. Word has length 510 [2020-07-07 11:03:27,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:03:27,251 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 250 transitions. [2020-07-07 11:03:27,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-07-07 11:03:27,251 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 250 transitions. [2020-07-07 11:03:27,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2020-07-07 11:03:27,254 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:03:27,255 INFO L422 BasicCegarLoop]: trace histogram [73, 73, 72, 72, 72, 72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:03:27,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:03:27,455 INFO L427 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:03:27,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:03:27,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1551508597, now seen corresponding path program 72 times [2020-07-07 11:03:27,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:03:27,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137618691] [2020-07-07 11:03:27,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:03:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:37,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:41,671 INFO L134 CoverageAnalysis]: Checked inductivity of 18180 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 10368 trivial. 0 not checked. [2020-07-07 11:03:41,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137618691] [2020-07-07 11:03:41,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196949431] [2020-07-07 11:03:41,672 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:03:42,028 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2020-07-07 11:03:42,028 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:03:42,037 INFO L264 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 148 conjunts are in the unsatisfiable core [2020-07-07 11:03:42,042 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:03:42,361 INFO L134 CoverageAnalysis]: Checked inductivity of 18180 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 10368 trivial. 0 not checked. [2020-07-07 11:03:42,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:03:42,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 79 [2020-07-07 11:03:42,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313077505] [2020-07-07 11:03:42,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-07-07 11:03:42,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:03:42,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-07-07 11:03:42,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2857, Invalid=3305, Unknown=0, NotChecked=0, Total=6162 [2020-07-07 11:03:42,363 INFO L87 Difference]: Start difference. First operand 242 states and 250 transitions. Second operand 79 states. [2020-07-07 11:03:45,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:03:45,280 INFO L93 Difference]: Finished difference Result 251 states and 261 transitions. [2020-07-07 11:03:45,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-07-07 11:03:45,281 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 517 [2020-07-07 11:03:45,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:03:45,282 INFO L225 Difference]: With dead ends: 251 [2020-07-07 11:03:45,282 INFO L226 Difference]: Without dead ends: 247 [2020-07-07 11:03:45,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5401 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=8629, Invalid=14627, Unknown=0, NotChecked=0, Total=23256 [2020-07-07 11:03:45,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-07-07 11:03:45,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 245. [2020-07-07 11:03:45,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-07-07 11:03:45,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 253 transitions. [2020-07-07 11:03:45,290 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 253 transitions. Word has length 517 [2020-07-07 11:03:45,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:03:45,291 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 253 transitions. [2020-07-07 11:03:45,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-07-07 11:03:45,291 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 253 transitions. [2020-07-07 11:03:45,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-07-07 11:03:45,294 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:03:45,294 INFO L422 BasicCegarLoop]: trace histogram [74, 74, 73, 73, 73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:03:45,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:03:45,495 INFO L427 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:03:45,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:03:45,496 INFO L82 PathProgramCache]: Analyzing trace with hash -986895084, now seen corresponding path program 73 times [2020-07-07 11:03:45,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:03:45,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133918402] [2020-07-07 11:03:45,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:03:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:54,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:55,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:03:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 18688 backedges. 0 proven. 8030 refuted. 0 times theorem prover too weak. 10658 trivial. 0 not checked. [2020-07-07 11:04:00,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133918402] [2020-07-07 11:04:00,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937008539] [2020-07-07 11:04:00,243 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:04:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:00,442 INFO L264 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 150 conjunts are in the unsatisfiable core [2020-07-07 11:04:00,446 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:04:00,792 INFO L134 CoverageAnalysis]: Checked inductivity of 18688 backedges. 0 proven. 8030 refuted. 0 times theorem prover too weak. 10658 trivial. 0 not checked. [2020-07-07 11:04:00,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:04:00,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 80 [2020-07-07 11:04:00,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901259731] [2020-07-07 11:04:00,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-07-07 11:04:00,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:04:00,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-07-07 11:04:00,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2933, Invalid=3387, Unknown=0, NotChecked=0, Total=6320 [2020-07-07 11:04:00,795 INFO L87 Difference]: Start difference. First operand 245 states and 253 transitions. Second operand 80 states. [2020-07-07 11:04:03,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:04:03,780 INFO L93 Difference]: Finished difference Result 254 states and 264 transitions. [2020-07-07 11:04:03,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-07-07 11:04:03,781 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 524 [2020-07-07 11:04:03,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:04:03,783 INFO L225 Difference]: With dead ends: 254 [2020-07-07 11:04:03,783 INFO L226 Difference]: Without dead ends: 250 [2020-07-07 11:04:03,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 825 GetRequests, 672 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5549 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=8858, Invalid=15012, Unknown=0, NotChecked=0, Total=23870 [2020-07-07 11:04:03,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-07-07 11:04:03,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2020-07-07 11:04:03,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-07-07 11:04:03,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 256 transitions. [2020-07-07 11:04:03,791 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 256 transitions. Word has length 524 [2020-07-07 11:04:03,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:04:03,792 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 256 transitions. [2020-07-07 11:04:03,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-07-07 11:04:03,792 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 256 transitions. [2020-07-07 11:04:03,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2020-07-07 11:04:03,796 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:04:03,796 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 74, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:04:04,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:04:04,001 INFO L427 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:04:04,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:04:04,001 INFO L82 PathProgramCache]: Analyzing trace with hash -392311925, now seen corresponding path program 74 times [2020-07-07 11:04:04,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:04:04,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085371963] [2020-07-07 11:04:04,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:04:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 19203 backedges. 0 proven. 8251 refuted. 0 times theorem prover too weak. 10952 trivial. 0 not checked. [2020-07-07 11:04:19,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085371963] [2020-07-07 11:04:19,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803343826] [2020-07-07 11:04:19,930 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:04:20,125 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:04:20,125 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:04:20,133 INFO L264 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 152 conjunts are in the unsatisfiable core [2020-07-07 11:04:20,138 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:04:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 19203 backedges. 0 proven. 8251 refuted. 0 times theorem prover too weak. 10952 trivial. 0 not checked. [2020-07-07 11:04:20,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:04:20,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 81 [2020-07-07 11:04:20,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214815344] [2020-07-07 11:04:20,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-07-07 11:04:20,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:04:20,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-07-07 11:04:20,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3010, Invalid=3470, Unknown=0, NotChecked=0, Total=6480 [2020-07-07 11:04:20,479 INFO L87 Difference]: Start difference. First operand 248 states and 256 transitions. Second operand 81 states. [2020-07-07 11:04:23,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:04:23,553 INFO L93 Difference]: Finished difference Result 257 states and 267 transitions. [2020-07-07 11:04:23,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-07-07 11:04:23,554 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 531 [2020-07-07 11:04:23,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:04:23,556 INFO L225 Difference]: With dead ends: 257 [2020-07-07 11:04:23,556 INFO L226 Difference]: Without dead ends: 253 [2020-07-07 11:04:23,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 836 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5699 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=9090, Invalid=15402, Unknown=0, NotChecked=0, Total=24492 [2020-07-07 11:04:23,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-07-07 11:04:23,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 251. [2020-07-07 11:04:23,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-07-07 11:04:23,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 259 transitions. [2020-07-07 11:04:23,564 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 259 transitions. Word has length 531 [2020-07-07 11:04:23,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:04:23,565 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 259 transitions. [2020-07-07 11:04:23,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-07-07 11:04:23,565 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 259 transitions. [2020-07-07 11:04:23,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2020-07-07 11:04:23,568 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:04:23,569 INFO L422 BasicCegarLoop]: trace histogram [76, 76, 75, 75, 75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:04:23,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2020-07-07 11:04:23,783 INFO L427 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:04:23,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:04:23,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1955591550, now seen corresponding path program 75 times [2020-07-07 11:04:23,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:04:23,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957756414] [2020-07-07 11:04:23,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:04:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:31,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:35,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 19725 backedges. 0 proven. 8475 refuted. 0 times theorem prover too weak. 11250 trivial. 0 not checked. [2020-07-07 11:04:41,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957756414] [2020-07-07 11:04:41,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155013272] [2020-07-07 11:04:41,933 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:04:42,234 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2020-07-07 11:04:42,235 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:04:42,247 INFO L264 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 154 conjunts are in the unsatisfiable core [2020-07-07 11:04:42,254 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:04:42,635 INFO L134 CoverageAnalysis]: Checked inductivity of 19725 backedges. 0 proven. 8475 refuted. 0 times theorem prover too weak. 11250 trivial. 0 not checked. [2020-07-07 11:04:42,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:04:42,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 82 [2020-07-07 11:04:42,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958846395] [2020-07-07 11:04:42,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-07-07 11:04:42,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:04:42,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-07-07 11:04:42,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3088, Invalid=3554, Unknown=0, NotChecked=0, Total=6642 [2020-07-07 11:04:42,638 INFO L87 Difference]: Start difference. First operand 251 states and 259 transitions. Second operand 82 states. [2020-07-07 11:04:45,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:04:45,925 INFO L93 Difference]: Finished difference Result 260 states and 270 transitions. [2020-07-07 11:04:45,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-07-07 11:04:45,926 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 538 [2020-07-07 11:04:45,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:04:45,928 INFO L225 Difference]: With dead ends: 260 [2020-07-07 11:04:45,928 INFO L226 Difference]: Without dead ends: 256 [2020-07-07 11:04:45,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 847 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5851 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=9325, Invalid=15797, Unknown=0, NotChecked=0, Total=25122 [2020-07-07 11:04:45,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-07-07 11:04:45,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 254. [2020-07-07 11:04:45,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-07-07 11:04:45,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 262 transitions. [2020-07-07 11:04:45,938 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 262 transitions. Word has length 538 [2020-07-07 11:04:45,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:04:45,939 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 262 transitions. [2020-07-07 11:04:45,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-07-07 11:04:45,939 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 262 transitions. [2020-07-07 11:04:45,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2020-07-07 11:04:45,943 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:04:45,943 INFO L422 BasicCegarLoop]: trace histogram [77, 77, 76, 76, 76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:04:46,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:04:46,144 INFO L427 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:04:46,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:04:46,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1427684257, now seen corresponding path program 76 times [2020-07-07 11:04:46,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:04:46,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949593240] [2020-07-07 11:04:46,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:04:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:52,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:04:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:05,174 INFO L134 CoverageAnalysis]: Checked inductivity of 20254 backedges. 0 proven. 8702 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2020-07-07 11:05:05,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949593240] [2020-07-07 11:05:05,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952243230] [2020-07-07 11:05:05,175 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:05:05,402 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:05:05,403 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:05:05,413 INFO L264 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 156 conjunts are in the unsatisfiable core [2020-07-07 11:05:05,420 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:05:05,813 INFO L134 CoverageAnalysis]: Checked inductivity of 20254 backedges. 0 proven. 8702 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2020-07-07 11:05:05,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:05:05,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 83 [2020-07-07 11:05:05,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849015366] [2020-07-07 11:05:05,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-07-07 11:05:05,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:05:05,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-07-07 11:05:05,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3167, Invalid=3639, Unknown=0, NotChecked=0, Total=6806 [2020-07-07 11:05:05,817 INFO L87 Difference]: Start difference. First operand 254 states and 262 transitions. Second operand 83 states. [2020-07-07 11:05:09,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:05:09,111 INFO L93 Difference]: Finished difference Result 263 states and 273 transitions. [2020-07-07 11:05:09,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-07-07 11:05:09,112 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 545 [2020-07-07 11:05:09,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:05:09,116 INFO L225 Difference]: With dead ends: 263 [2020-07-07 11:05:09,116 INFO L226 Difference]: Without dead ends: 259 [2020-07-07 11:05:09,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 699 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6005 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=9563, Invalid=16197, Unknown=0, NotChecked=0, Total=25760 [2020-07-07 11:05:09,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-07-07 11:05:09,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2020-07-07 11:05:09,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-07-07 11:05:09,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 265 transitions. [2020-07-07 11:05:09,129 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 265 transitions. Word has length 545 [2020-07-07 11:05:09,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:05:09,130 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 265 transitions. [2020-07-07 11:05:09,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-07-07 11:05:09,130 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 265 transitions. [2020-07-07 11:05:09,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2020-07-07 11:05:09,135 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:05:09,135 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 77, 77, 77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:05:09,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:05:09,350 INFO L427 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:05:09,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:05:09,351 INFO L82 PathProgramCache]: Analyzing trace with hash 963585256, now seen corresponding path program 77 times [2020-07-07 11:05:09,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:05:09,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963307023] [2020-07-07 11:05:09,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:05:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 20790 backedges. 0 proven. 8932 refuted. 0 times theorem prover too weak. 11858 trivial. 0 not checked. [2020-07-07 11:05:29,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963307023] [2020-07-07 11:05:29,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890941804] [2020-07-07 11:05:29,150 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:05:29,515 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2020-07-07 11:05:29,515 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:05:29,530 INFO L264 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 158 conjunts are in the unsatisfiable core [2020-07-07 11:05:29,537 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:05:29,942 INFO L134 CoverageAnalysis]: Checked inductivity of 20790 backedges. 0 proven. 8932 refuted. 0 times theorem prover too weak. 11858 trivial. 0 not checked. [2020-07-07 11:05:29,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:05:29,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 84 [2020-07-07 11:05:29,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607538393] [2020-07-07 11:05:29,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-07-07 11:05:29,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:05:29,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-07-07 11:05:29,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3247, Invalid=3725, Unknown=0, NotChecked=0, Total=6972 [2020-07-07 11:05:29,945 INFO L87 Difference]: Start difference. First operand 257 states and 265 transitions. Second operand 84 states. [2020-07-07 11:05:33,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:05:33,327 INFO L93 Difference]: Finished difference Result 266 states and 276 transitions. [2020-07-07 11:05:33,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-07-07 11:05:33,328 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 552 [2020-07-07 11:05:33,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:05:33,330 INFO L225 Difference]: With dead ends: 266 [2020-07-07 11:05:33,330 INFO L226 Difference]: Without dead ends: 262 [2020-07-07 11:05:33,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 869 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6161 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=9804, Invalid=16602, Unknown=0, NotChecked=0, Total=26406 [2020-07-07 11:05:33,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-07-07 11:05:33,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 260. [2020-07-07 11:05:33,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-07-07 11:05:33,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 268 transitions. [2020-07-07 11:05:33,342 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 268 transitions. Word has length 552 [2020-07-07 11:05:33,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:05:33,343 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 268 transitions. [2020-07-07 11:05:33,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-07-07 11:05:33,343 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 268 transitions. [2020-07-07 11:05:33,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2020-07-07 11:05:33,348 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:05:33,348 INFO L422 BasicCegarLoop]: trace histogram [79, 79, 78, 78, 78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:05:33,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-07-07 11:05:33,562 INFO L427 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:05:33,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:05:33,563 INFO L82 PathProgramCache]: Analyzing trace with hash -487877449, now seen corresponding path program 78 times [2020-07-07 11:05:33,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:05:33,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046812560] [2020-07-07 11:05:33,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:05:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:54,390 INFO L134 CoverageAnalysis]: Checked inductivity of 21333 backedges. 0 proven. 9165 refuted. 0 times theorem prover too weak. 12168 trivial. 0 not checked. [2020-07-07 11:05:54,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046812560] [2020-07-07 11:05:54,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909301728] [2020-07-07 11:05:54,391 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:05:54,764 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2020-07-07 11:05:54,764 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:05:54,778 INFO L264 TraceCheckSpWp]: Trace formula consists of 1525 conjuncts, 160 conjunts are in the unsatisfiable core [2020-07-07 11:05:54,785 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:05:55,197 INFO L134 CoverageAnalysis]: Checked inductivity of 21333 backedges. 0 proven. 9165 refuted. 0 times theorem prover too weak. 12168 trivial. 0 not checked. [2020-07-07 11:05:55,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:05:55,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 85 [2020-07-07 11:05:55,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641623908] [2020-07-07 11:05:55,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-07-07 11:05:55,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:05:55,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-07-07 11:05:55,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3328, Invalid=3812, Unknown=0, NotChecked=0, Total=7140 [2020-07-07 11:05:55,200 INFO L87 Difference]: Start difference. First operand 260 states and 268 transitions. Second operand 85 states. [2020-07-07 11:05:58,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:05:58,763 INFO L93 Difference]: Finished difference Result 269 states and 279 transitions. [2020-07-07 11:05:58,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-07-07 11:05:58,764 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 559 [2020-07-07 11:05:58,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:05:58,766 INFO L225 Difference]: With dead ends: 269 [2020-07-07 11:05:58,767 INFO L226 Difference]: Without dead ends: 265 [2020-07-07 11:05:58,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6319 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=10048, Invalid=17012, Unknown=0, NotChecked=0, Total=27060 [2020-07-07 11:05:58,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-07-07 11:05:58,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 263. [2020-07-07 11:05:58,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-07-07 11:05:58,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 271 transitions. [2020-07-07 11:05:58,777 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 271 transitions. Word has length 559 [2020-07-07 11:05:58,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:05:58,778 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 271 transitions. [2020-07-07 11:05:58,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-07-07 11:05:58,778 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 271 transitions. [2020-07-07 11:05:58,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2020-07-07 11:05:58,782 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:05:58,782 INFO L422 BasicCegarLoop]: trace histogram [80, 80, 79, 79, 79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:05:58,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-07-07 11:05:58,984 INFO L427 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:05:58,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:05:58,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1246094510, now seen corresponding path program 79 times [2020-07-07 11:05:58,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:05:58,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623237318] [2020-07-07 11:05:58,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:05:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:05:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:20,953 INFO L134 CoverageAnalysis]: Checked inductivity of 21883 backedges. 0 proven. 9401 refuted. 0 times theorem prover too weak. 12482 trivial. 0 not checked. [2020-07-07 11:06:20,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623237318] [2020-07-07 11:06:20,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065537409] [2020-07-07 11:06:20,954 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:06:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:21,191 INFO L264 TraceCheckSpWp]: Trace formula consists of 1544 conjuncts, 162 conjunts are in the unsatisfiable core [2020-07-07 11:06:21,198 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:06:21,619 INFO L134 CoverageAnalysis]: Checked inductivity of 21883 backedges. 0 proven. 9401 refuted. 0 times theorem prover too weak. 12482 trivial. 0 not checked. [2020-07-07 11:06:21,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:06:21,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 86 [2020-07-07 11:06:21,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719022906] [2020-07-07 11:06:21,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-07-07 11:06:21,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:06:21,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-07-07 11:06:21,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3410, Invalid=3900, Unknown=0, NotChecked=0, Total=7310 [2020-07-07 11:06:21,623 INFO L87 Difference]: Start difference. First operand 263 states and 271 transitions. Second operand 86 states. [2020-07-07 11:06:25,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:06:25,298 INFO L93 Difference]: Finished difference Result 272 states and 282 transitions. [2020-07-07 11:06:25,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-07-07 11:06:25,299 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 566 [2020-07-07 11:06:25,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:06:25,301 INFO L225 Difference]: With dead ends: 272 [2020-07-07 11:06:25,302 INFO L226 Difference]: Without dead ends: 268 [2020-07-07 11:06:25,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6479 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=10295, Invalid=17427, Unknown=0, NotChecked=0, Total=27722 [2020-07-07 11:06:25,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-07-07 11:06:25,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 266. [2020-07-07 11:06:25,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-07-07 11:06:25,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 274 transitions. [2020-07-07 11:06:25,312 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 274 transitions. Word has length 566 [2020-07-07 11:06:25,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:06:25,313 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 274 transitions. [2020-07-07 11:06:25,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-07-07 11:06:25,313 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 274 transitions. [2020-07-07 11:06:25,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2020-07-07 11:06:25,316 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:06:25,317 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 80, 80, 80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:06:25,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:06:25,518 INFO L427 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:06:25,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:06:25,519 INFO L82 PathProgramCache]: Analyzing trace with hash -994642227, now seen corresponding path program 80 times [2020-07-07 11:06:25,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:06:25,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171128599] [2020-07-07 11:06:25,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:06:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 22440 backedges. 0 proven. 9640 refuted. 0 times theorem prover too weak. 12800 trivial. 0 not checked. [2020-07-07 11:06:47,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171128599] [2020-07-07 11:06:47,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713949267] [2020-07-07 11:06:47,886 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:06:48,108 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:06:48,109 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:06:48,118 INFO L264 TraceCheckSpWp]: Trace formula consists of 1563 conjuncts, 164 conjunts are in the unsatisfiable core [2020-07-07 11:06:48,125 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:06:48,570 INFO L134 CoverageAnalysis]: Checked inductivity of 22440 backedges. 0 proven. 9640 refuted. 0 times theorem prover too weak. 12800 trivial. 0 not checked. [2020-07-07 11:06:48,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:06:48,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 87 [2020-07-07 11:06:48,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723187821] [2020-07-07 11:06:48,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-07-07 11:06:48,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:06:48,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-07-07 11:06:48,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3493, Invalid=3989, Unknown=0, NotChecked=0, Total=7482 [2020-07-07 11:06:48,574 INFO L87 Difference]: Start difference. First operand 266 states and 274 transitions. Second operand 87 states. [2020-07-07 11:06:52,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:06:52,294 INFO L93 Difference]: Finished difference Result 275 states and 285 transitions. [2020-07-07 11:06:52,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-07-07 11:06:52,295 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 573 [2020-07-07 11:06:52,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:06:52,297 INFO L225 Difference]: With dead ends: 275 [2020-07-07 11:06:52,297 INFO L226 Difference]: Without dead ends: 271 [2020-07-07 11:06:52,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 735 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6641 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=10545, Invalid=17847, Unknown=0, NotChecked=0, Total=28392 [2020-07-07 11:06:52,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-07-07 11:06:52,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 269. [2020-07-07 11:06:52,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-07-07 11:06:52,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 277 transitions. [2020-07-07 11:06:52,307 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 277 transitions. Word has length 573 [2020-07-07 11:06:52,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:06:52,308 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 277 transitions. [2020-07-07 11:06:52,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-07-07 11:06:52,308 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 277 transitions. [2020-07-07 11:06:52,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2020-07-07 11:06:52,312 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:06:52,312 INFO L422 BasicCegarLoop]: trace histogram [82, 82, 81, 81, 81, 81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:06:52,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:06:52,513 INFO L427 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:06:52,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:06:52,514 INFO L82 PathProgramCache]: Analyzing trace with hash -893372228, now seen corresponding path program 81 times [2020-07-07 11:06:52,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:06:52,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711098531] [2020-07-07 11:06:52,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:06:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:06:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:05,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:06,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:15,234 INFO L134 CoverageAnalysis]: Checked inductivity of 23004 backedges. 0 proven. 9882 refuted. 0 times theorem prover too weak. 13122 trivial. 0 not checked. [2020-07-07 11:07:15,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711098531] [2020-07-07 11:07:15,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710571370] [2020-07-07 11:07:15,235 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:07:15,583 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2020-07-07 11:07:15,584 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:07:15,595 INFO L264 TraceCheckSpWp]: Trace formula consists of 1582 conjuncts, 166 conjunts are in the unsatisfiable core [2020-07-07 11:07:15,602 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:07:16,040 INFO L134 CoverageAnalysis]: Checked inductivity of 23004 backedges. 0 proven. 9882 refuted. 0 times theorem prover too weak. 13122 trivial. 0 not checked. [2020-07-07 11:07:16,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:07:16,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 88 [2020-07-07 11:07:16,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731156855] [2020-07-07 11:07:16,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-07-07 11:07:16,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:07:16,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-07-07 11:07:16,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3577, Invalid=4079, Unknown=0, NotChecked=0, Total=7656 [2020-07-07 11:07:16,044 INFO L87 Difference]: Start difference. First operand 269 states and 277 transitions. Second operand 88 states. [2020-07-07 11:07:19,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:07:19,958 INFO L93 Difference]: Finished difference Result 278 states and 288 transitions. [2020-07-07 11:07:19,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-07-07 11:07:19,960 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 580 [2020-07-07 11:07:19,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:07:19,962 INFO L225 Difference]: With dead ends: 278 [2020-07-07 11:07:19,962 INFO L226 Difference]: Without dead ends: 274 [2020-07-07 11:07:19,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 913 GetRequests, 744 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6805 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=10798, Invalid=18272, Unknown=0, NotChecked=0, Total=29070 [2020-07-07 11:07:19,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-07-07 11:07:19,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 272. [2020-07-07 11:07:19,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-07-07 11:07:19,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 280 transitions. [2020-07-07 11:07:19,973 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 280 transitions. Word has length 580 [2020-07-07 11:07:19,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:07:19,974 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 280 transitions. [2020-07-07 11:07:19,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-07-07 11:07:19,974 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 280 transitions. [2020-07-07 11:07:19,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2020-07-07 11:07:19,978 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:07:19,978 INFO L422 BasicCegarLoop]: trace histogram [83, 83, 82, 82, 82, 82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:07:20,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:07:20,180 INFO L427 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:07:20,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:07:20,181 INFO L82 PathProgramCache]: Analyzing trace with hash 2092663267, now seen corresponding path program 82 times [2020-07-07 11:07:20,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:07:20,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473224827] [2020-07-07 11:07:20,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:07:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:43,459 INFO L134 CoverageAnalysis]: Checked inductivity of 23575 backedges. 0 proven. 10127 refuted. 0 times theorem prover too weak. 13448 trivial. 0 not checked. [2020-07-07 11:07:43,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473224827] [2020-07-07 11:07:43,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420007835] [2020-07-07 11:07:43,460 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:07:43,695 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:07:43,696 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:07:43,706 INFO L264 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 168 conjunts are in the unsatisfiable core [2020-07-07 11:07:43,713 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:07:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 23575 backedges. 0 proven. 10127 refuted. 0 times theorem prover too weak. 13448 trivial. 0 not checked. [2020-07-07 11:07:44,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:07:44,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 89 [2020-07-07 11:07:44,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67601718] [2020-07-07 11:07:44,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-07-07 11:07:44,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:07:44,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-07-07 11:07:44,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3662, Invalid=4170, Unknown=0, NotChecked=0, Total=7832 [2020-07-07 11:07:44,161 INFO L87 Difference]: Start difference. First operand 272 states and 280 transitions. Second operand 89 states. [2020-07-07 11:07:48,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:07:48,198 INFO L93 Difference]: Finished difference Result 281 states and 291 transitions. [2020-07-07 11:07:48,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-07-07 11:07:48,199 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 587 [2020-07-07 11:07:48,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:07:48,202 INFO L225 Difference]: With dead ends: 281 [2020-07-07 11:07:48,202 INFO L226 Difference]: Without dead ends: 277 [2020-07-07 11:07:48,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 753 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6971 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=11054, Invalid=18702, Unknown=0, NotChecked=0, Total=29756 [2020-07-07 11:07:48,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-07-07 11:07:48,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2020-07-07 11:07:48,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-07-07 11:07:48,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 283 transitions. [2020-07-07 11:07:48,213 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 283 transitions. Word has length 587 [2020-07-07 11:07:48,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:07:48,214 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 283 transitions. [2020-07-07 11:07:48,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-07-07 11:07:48,214 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 283 transitions. [2020-07-07 11:07:48,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2020-07-07 11:07:48,218 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:07:48,218 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 83, 83, 83, 83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:07:48,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:07:48,419 INFO L427 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:07:48,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:07:48,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1154425562, now seen corresponding path program 83 times [2020-07-07 11:07:48,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:07:48,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112235279] [2020-07-07 11:07:48,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:07:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:49,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:07:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:05,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 24153 backedges. 0 proven. 10375 refuted. 0 times theorem prover too weak. 13778 trivial. 0 not checked. [2020-07-07 11:08:11,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112235279] [2020-07-07 11:08:11,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705946859] [2020-07-07 11:08:11,859 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:08:12,213 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2020-07-07 11:08:12,214 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:08:12,228 INFO L264 TraceCheckSpWp]: Trace formula consists of 1620 conjuncts, 170 conjunts are in the unsatisfiable core [2020-07-07 11:08:12,234 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:08:12,654 INFO L134 CoverageAnalysis]: Checked inductivity of 24153 backedges. 0 proven. 10375 refuted. 0 times theorem prover too weak. 13778 trivial. 0 not checked. [2020-07-07 11:08:12,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:08:12,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 90 [2020-07-07 11:08:12,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953447756] [2020-07-07 11:08:12,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-07-07 11:08:12,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:08:12,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-07-07 11:08:12,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3748, Invalid=4262, Unknown=0, NotChecked=0, Total=8010 [2020-07-07 11:08:12,657 INFO L87 Difference]: Start difference. First operand 275 states and 283 transitions. Second operand 90 states. [2020-07-07 11:08:16,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:08:16,575 INFO L93 Difference]: Finished difference Result 284 states and 294 transitions. [2020-07-07 11:08:16,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-07-07 11:08:16,576 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 594 [2020-07-07 11:08:16,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:08:16,578 INFO L225 Difference]: With dead ends: 284 [2020-07-07 11:08:16,578 INFO L226 Difference]: Without dead ends: 280 [2020-07-07 11:08:16,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 935 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7139 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=11313, Invalid=19137, Unknown=0, NotChecked=0, Total=30450 [2020-07-07 11:08:16,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-07-07 11:08:16,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 278. [2020-07-07 11:08:16,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-07 11:08:16,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 286 transitions. [2020-07-07 11:08:16,589 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 286 transitions. Word has length 594 [2020-07-07 11:08:16,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:08:16,590 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 286 transitions. [2020-07-07 11:08:16,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-07-07 11:08:16,590 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 286 transitions. [2020-07-07 11:08:16,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2020-07-07 11:08:16,595 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:08:16,596 INFO L422 BasicCegarLoop]: trace histogram [85, 85, 84, 84, 84, 84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:08:16,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:08:16,811 INFO L427 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:08:16,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:08:16,812 INFO L82 PathProgramCache]: Analyzing trace with hash 987354617, now seen corresponding path program 84 times [2020-07-07 11:08:16,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:08:16,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096233237] [2020-07-07 11:08:16,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:08:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:38,976 INFO L134 CoverageAnalysis]: Checked inductivity of 24738 backedges. 0 proven. 10626 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2020-07-07 11:08:38,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096233237] [2020-07-07 11:08:38,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498929208] [2020-07-07 11:08:38,977 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:08:39,381 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2020-07-07 11:08:39,381 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:08:39,395 INFO L264 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 172 conjunts are in the unsatisfiable core [2020-07-07 11:08:39,402 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:08:39,829 INFO L134 CoverageAnalysis]: Checked inductivity of 24738 backedges. 0 proven. 10626 refuted. 0 times theorem prover too weak. 14112 trivial. 0 not checked. [2020-07-07 11:08:39,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:08:39,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 91 [2020-07-07 11:08:39,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54303596] [2020-07-07 11:08:39,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-07-07 11:08:39,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:08:39,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-07-07 11:08:39,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3835, Invalid=4355, Unknown=0, NotChecked=0, Total=8190 [2020-07-07 11:08:39,833 INFO L87 Difference]: Start difference. First operand 278 states and 286 transitions. Second operand 91 states. [2020-07-07 11:08:44,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:08:44,140 INFO L93 Difference]: Finished difference Result 287 states and 297 transitions. [2020-07-07 11:08:44,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-07-07 11:08:44,142 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 601 [2020-07-07 11:08:44,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:08:44,144 INFO L225 Difference]: With dead ends: 287 [2020-07-07 11:08:44,144 INFO L226 Difference]: Without dead ends: 283 [2020-07-07 11:08:44,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 946 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7309 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=11575, Invalid=19577, Unknown=0, NotChecked=0, Total=31152 [2020-07-07 11:08:44,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-07-07 11:08:44,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 281. [2020-07-07 11:08:44,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-07-07 11:08:44,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 289 transitions. [2020-07-07 11:08:44,154 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 289 transitions. Word has length 601 [2020-07-07 11:08:44,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:08:44,155 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 289 transitions. [2020-07-07 11:08:44,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-07-07 11:08:44,155 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 289 transitions. [2020-07-07 11:08:44,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2020-07-07 11:08:44,160 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:08:44,160 INFO L422 BasicCegarLoop]: trace histogram [86, 86, 85, 85, 85, 85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:08:44,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2020-07-07 11:08:44,374 INFO L427 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:08:44,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:08:44,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1293641872, now seen corresponding path program 85 times [2020-07-07 11:08:44,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:08:44,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877242755] [2020-07-07 11:08:44,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:08:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:08:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:06,871 INFO L134 CoverageAnalysis]: Checked inductivity of 25330 backedges. 0 proven. 10880 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked. [2020-07-07 11:09:06,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877242755] [2020-07-07 11:09:06,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157390694] [2020-07-07 11:09:06,872 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:09:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:07,107 INFO L264 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 174 conjunts are in the unsatisfiable core [2020-07-07 11:09:07,113 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:09:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 25330 backedges. 0 proven. 10880 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked. [2020-07-07 11:09:07,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:09:07,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 92 [2020-07-07 11:09:07,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355159789] [2020-07-07 11:09:07,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2020-07-07 11:09:07,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:09:07,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2020-07-07 11:09:07,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3923, Invalid=4449, Unknown=0, NotChecked=0, Total=8372 [2020-07-07 11:09:07,547 INFO L87 Difference]: Start difference. First operand 281 states and 289 transitions. Second operand 92 states. [2020-07-07 11:09:11,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:09:11,805 INFO L93 Difference]: Finished difference Result 290 states and 300 transitions. [2020-07-07 11:09:11,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-07-07 11:09:11,806 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 608 [2020-07-07 11:09:11,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:09:11,808 INFO L225 Difference]: With dead ends: 290 [2020-07-07 11:09:11,808 INFO L226 Difference]: Without dead ends: 286 [2020-07-07 11:09:11,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 780 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7481 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=11840, Invalid=20022, Unknown=0, NotChecked=0, Total=31862 [2020-07-07 11:09:11,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-07-07 11:09:11,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2020-07-07 11:09:11,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-07-07 11:09:11,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 292 transitions. [2020-07-07 11:09:11,816 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 292 transitions. Word has length 608 [2020-07-07 11:09:11,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:09:11,816 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 292 transitions. [2020-07-07 11:09:11,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 92 states. [2020-07-07 11:09:11,817 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 292 transitions. [2020-07-07 11:09:11,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2020-07-07 11:09:11,820 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:09:11,820 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 86, 86, 86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:09:12,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:09:12,021 INFO L427 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:09:12,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:09:12,022 INFO L82 PathProgramCache]: Analyzing trace with hash 982684431, now seen corresponding path program 86 times [2020-07-07 11:09:12,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:09:12,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718187199] [2020-07-07 11:09:12,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:09:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:35,170 INFO L134 CoverageAnalysis]: Checked inductivity of 25929 backedges. 0 proven. 11137 refuted. 0 times theorem prover too weak. 14792 trivial. 0 not checked. [2020-07-07 11:09:35,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718187199] [2020-07-07 11:09:35,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722075357] [2020-07-07 11:09:35,171 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:09:35,402 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:09:35,402 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:09:35,410 INFO L264 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 176 conjunts are in the unsatisfiable core [2020-07-07 11:09:35,416 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:09:35,860 INFO L134 CoverageAnalysis]: Checked inductivity of 25929 backedges. 0 proven. 11137 refuted. 0 times theorem prover too weak. 14792 trivial. 0 not checked. [2020-07-07 11:09:35,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:09:35,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 93 [2020-07-07 11:09:35,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279607051] [2020-07-07 11:09:35,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2020-07-07 11:09:35,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:09:35,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2020-07-07 11:09:35,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4012, Invalid=4544, Unknown=0, NotChecked=0, Total=8556 [2020-07-07 11:09:35,863 INFO L87 Difference]: Start difference. First operand 284 states and 292 transitions. Second operand 93 states. [2020-07-07 11:09:40,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:09:40,393 INFO L93 Difference]: Finished difference Result 293 states and 303 transitions. [2020-07-07 11:09:40,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2020-07-07 11:09:40,394 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 615 [2020-07-07 11:09:40,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:09:40,396 INFO L225 Difference]: With dead ends: 293 [2020-07-07 11:09:40,396 INFO L226 Difference]: Without dead ends: 289 [2020-07-07 11:09:40,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 968 GetRequests, 789 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7655 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=12108, Invalid=20472, Unknown=0, NotChecked=0, Total=32580 [2020-07-07 11:09:40,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-07-07 11:09:40,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2020-07-07 11:09:40,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-07-07 11:09:40,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 295 transitions. [2020-07-07 11:09:40,403 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 295 transitions. Word has length 615 [2020-07-07 11:09:40,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:09:40,404 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 295 transitions. [2020-07-07 11:09:40,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 93 states. [2020-07-07 11:09:40,404 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 295 transitions. [2020-07-07 11:09:40,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2020-07-07 11:09:40,407 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:09:40,408 INFO L422 BasicCegarLoop]: trace histogram [88, 88, 87, 87, 87, 87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:09:40,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-07-07 11:09:40,609 INFO L427 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:09:40,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:09:40,610 INFO L82 PathProgramCache]: Analyzing trace with hash -336643334, now seen corresponding path program 87 times [2020-07-07 11:09:40,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:09:40,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648831459] [2020-07-07 11:09:40,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:09:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:09:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat