/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/EvenOdd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:00:14,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:00:14,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:00:14,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:00:14,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:00:14,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:00:14,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:00:14,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:00:14,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:00:14,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:00:14,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:00:14,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:00:14,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:00:14,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:00:14,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:00:14,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:00:14,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:00:14,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:00:14,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:00:14,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:00:14,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:00:14,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:00:14,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:00:14,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:00:14,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:00:14,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:00:14,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:00:14,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:00:14,124 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 [2020-11-06 22:00:14,177 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:00:14,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:00:14,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:00:14,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:00:14,180 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:00:14,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:00:14,180 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:00:14,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:00:14,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:00:14,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:00:14,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:00:14,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:00:14,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:00:14,182 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:00:14,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:00:14,182 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:00:14,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:00:14,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:00:14,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:00:14,183 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:00:14,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:00:14,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:00:14,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:00:14,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:00:14,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:00:14,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:00:14,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:00:14,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:00:14,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:00:14,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:00:14,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:00:14,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:00:14,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:00:14,624 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:00:14,625 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:00:14,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-11-06 22:00:14,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d1dd6cd5/9c200e5e48bd454f9c293496761af0c4/FLAG89ad41b57 [2020-11-06 22:00:15,423 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:00:15,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-11-06 22:00:15,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d1dd6cd5/9c200e5e48bd454f9c293496761af0c4/FLAG89ad41b57 [2020-11-06 22:00:15,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d1dd6cd5/9c200e5e48bd454f9c293496761af0c4 [2020-11-06 22:00:15,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:00:15,835 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:00:15,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:00:15,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:00:15,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:00:15,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:15" (1/1) ... [2020-11-06 22:00:15,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a928599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:15, skipping insertion in model container [2020-11-06 22:00:15,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:15" (1/1) ... [2020-11-06 22:00:15,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:00:15,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:00:16,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:00:16,041 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:00:16,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:00:16,080 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:00:16,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:16 WrapperNode [2020-11-06 22:00:16,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:00:16,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:00:16,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:00:16,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:00:16,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:16" (1/1) ... [2020-11-06 22:00:16,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:16" (1/1) ... [2020-11-06 22:00:16,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:16" (1/1) ... [2020-11-06 22:00:16,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:16" (1/1) ... [2020-11-06 22:00:16,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:16" (1/1) ... [2020-11-06 22:00:16,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:16" (1/1) ... [2020-11-06 22:00:16,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:16" (1/1) ... [2020-11-06 22:00:16,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:00:16,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:00:16,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:00:16,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:00:16,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:16" (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 [2020-11-06 22:00:16,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:00:16,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:00:16,204 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:00:16,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2020-11-06 22:00:16,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2020-11-06 22:00:16,204 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:00:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:00:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:00:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:00:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:00:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:00:16,205 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2020-11-06 22:00:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2020-11-06 22:00:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:00:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:00:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:00:16,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:00:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:00:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:00:16,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:00:16,710 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:00:16,710 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-06 22:00:16,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:16 BoogieIcfgContainer [2020-11-06 22:00:16,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:00:16,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:00:16,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:00:16,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:00:16,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:00:15" (1/3) ... [2020-11-06 22:00:16,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df8f33a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:16, skipping insertion in model container [2020-11-06 22:00:16,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:16" (2/3) ... [2020-11-06 22:00:16,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df8f33a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:16, skipping insertion in model container [2020-11-06 22:00:16,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:16" (3/3) ... [2020-11-06 22:00:16,732 INFO L111 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2020-11-06 22:00:16,750 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:00:16,754 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:00:16,768 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:00:16,797 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:00:16,797 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:00:16,797 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:00:16,797 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:00:16,798 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:00:16,798 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:00:16,798 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:00:16,798 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:00:16,816 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-11-06 22:00:16,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-06 22:00:16,822 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:00:16,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:00:16,823 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:00:16,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:00:16,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1267163760, now seen corresponding path program 1 times [2020-11-06 22:00:16,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:00:16,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371963756] [2020-11-06 22:00:16,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:00:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:17,344 WARN L194 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 14 [2020-11-06 22:00:17,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:00:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:17,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:00:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:17,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:00:17,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371963756] [2020-11-06 22:00:17,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:00:17,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-06 22:00:17,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097617637] [2020-11-06 22:00:17,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 22:00:17,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:00:17,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 22:00:17,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:00:17,544 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 8 states. [2020-11-06 22:00:18,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:00:18,196 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2020-11-06 22:00:18,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-06 22:00:18,198 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-11-06 22:00:18,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:00:18,208 INFO L225 Difference]: With dead ends: 49 [2020-11-06 22:00:18,208 INFO L226 Difference]: Without dead ends: 29 [2020-11-06 22:00:18,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-11-06 22:00:18,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-06 22:00:18,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-06 22:00:18,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-06 22:00:18,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-11-06 22:00:18,272 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 16 [2020-11-06 22:00:18,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:00:18,273 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-11-06 22:00:18,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 22:00:18,273 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-11-06 22:00:18,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-06 22:00:18,275 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:00:18,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:00:18,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:00:18,275 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:00:18,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:00:18,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1353598010, now seen corresponding path program 1 times [2020-11-06 22:00:18,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:00:18,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052034960] [2020-11-06 22:00:18,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:00:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:18,517 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 16 [2020-11-06 22:00:18,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:00:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:18,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:00:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:00:18,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052034960] [2020-11-06 22:00:18,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:00:18,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-06 22:00:18,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777817382] [2020-11-06 22:00:18,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 22:00:18,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:00:18,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 22:00:18,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:00:18,657 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 8 states. [2020-11-06 22:00:18,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:00:18,962 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-11-06 22:00:18,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-06 22:00:18,962 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-11-06 22:00:18,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:00:18,964 INFO L225 Difference]: With dead ends: 36 [2020-11-06 22:00:18,964 INFO L226 Difference]: Without dead ends: 31 [2020-11-06 22:00:18,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-11-06 22:00:18,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-06 22:00:18,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-11-06 22:00:18,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-06 22:00:18,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-11-06 22:00:18,975 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 17 [2020-11-06 22:00:18,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:00:18,975 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-11-06 22:00:18,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 22:00:18,976 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-11-06 22:00:18,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-06 22:00:18,977 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:00:18,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:00:18,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:00:18,977 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:00:18,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:00:18,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1380467407, now seen corresponding path program 1 times [2020-11-06 22:00:18,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:00:18,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539019376] [2020-11-06 22:00:18,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:00:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:19,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:00:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:19,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:00:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:19,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:19,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:00:19,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539019376] [2020-11-06 22:00:19,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:00:19,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:00:19,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324146020] [2020-11-06 22:00:19,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:00:19,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:00:19,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:00:19,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:00:19,102 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-11-06 22:00:19,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:00:19,308 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-11-06 22:00:19,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:00:19,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-11-06 22:00:19,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:00:19,310 INFO L225 Difference]: With dead ends: 44 [2020-11-06 22:00:19,310 INFO L226 Difference]: Without dead ends: 31 [2020-11-06 22:00:19,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:00:19,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-06 22:00:19,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-11-06 22:00:19,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-06 22:00:19,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-11-06 22:00:19,319 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 23 [2020-11-06 22:00:19,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:00:19,319 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-11-06 22:00:19,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:00:19,319 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-11-06 22:00:19,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-06 22:00:19,320 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:00:19,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:00:19,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:00:19,321 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:00:19,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:00:19,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1100607130, now seen corresponding path program 1 times [2020-11-06 22:00:19,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:00:19,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588992937] [2020-11-06 22:00:19,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:00:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:19,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:00:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:19,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:00:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:19,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:19,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:00:19,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588992937] [2020-11-06 22:00:19,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:00:19,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-06 22:00:19,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599274633] [2020-11-06 22:00:19,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 22:00:19,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:00:19,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 22:00:19,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-11-06 22:00:19,609 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 11 states. [2020-11-06 22:00:20,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:00:20,191 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-11-06 22:00:20,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-06 22:00:20,192 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-11-06 22:00:20,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:00:20,194 INFO L225 Difference]: With dead ends: 39 [2020-11-06 22:00:20,194 INFO L226 Difference]: Without dead ends: 34 [2020-11-06 22:00:20,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-11-06 22:00:20,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-06 22:00:20,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-11-06 22:00:20,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-06 22:00:20,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-11-06 22:00:20,204 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-11-06 22:00:20,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:00:20,205 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-11-06 22:00:20,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 22:00:20,205 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-11-06 22:00:20,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-06 22:00:20,206 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:00:20,206 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:00:20,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 22:00:20,207 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:00:20,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:00:20,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1462998947, now seen corresponding path program 1 times [2020-11-06 22:00:20,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:00:20,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406056378] [2020-11-06 22:00:20,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:00:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:20,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:00:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:20,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:00:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:20,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:20,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:20,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-06 22:00:20,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406056378] [2020-11-06 22:00:20,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:00:20,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:00:20,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385360434] [2020-11-06 22:00:20,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:00:20,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:00:20,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:00:20,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:00:20,325 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 6 states. [2020-11-06 22:00:20,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:00:20,548 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2020-11-06 22:00:20,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:00:20,549 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-11-06 22:00:20,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:00:20,551 INFO L225 Difference]: With dead ends: 45 [2020-11-06 22:00:20,551 INFO L226 Difference]: Without dead ends: 32 [2020-11-06 22:00:20,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:00:20,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-06 22:00:20,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-06 22:00:20,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-06 22:00:20,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-11-06 22:00:20,559 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 30 [2020-11-06 22:00:20,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:00:20,560 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-11-06 22:00:20,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:00:20,560 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-11-06 22:00:20,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-06 22:00:20,561 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:00:20,561 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:00:20,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-06 22:00:20,561 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:00:20,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:00:20,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1815013415, now seen corresponding path program 1 times [2020-11-06 22:00:20,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:00:20,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142204483] [2020-11-06 22:00:20,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:00:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:20,808 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 17 [2020-11-06 22:00:20,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:00:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:20,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:00:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:20,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:21,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:21,065 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-06 22:00:21,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142204483] [2020-11-06 22:00:21,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601182934] [2020-11-06 22:00:21,066 INFO L95 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 [2020-11-06 22:00:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:21,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-06 22:00:21,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:00:21,407 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:00:21,447 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:00:21,625 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-06 22:00:21,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:00:21,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 16 [2020-11-06 22:00:21,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798595134] [2020-11-06 22:00:21,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-06 22:00:21,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:00:21,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-06 22:00:21,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-11-06 22:00:21,628 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 16 states. [2020-11-06 22:00:22,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:00:22,381 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2020-11-06 22:00:22,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-06 22:00:22,383 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 31 [2020-11-06 22:00:22,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:00:22,384 INFO L225 Difference]: With dead ends: 45 [2020-11-06 22:00:22,384 INFO L226 Difference]: Without dead ends: 40 [2020-11-06 22:00:22,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2020-11-06 22:00:22,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-06 22:00:22,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2020-11-06 22:00:22,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-06 22:00:22,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-11-06 22:00:22,407 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2020-11-06 22:00:22,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:00:22,408 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-11-06 22:00:22,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-06 22:00:22,409 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-11-06 22:00:22,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-06 22:00:22,411 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:00:22,411 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:00:22,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-06 22:00:22,628 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:00:22,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:00:22,629 INFO L82 PathProgramCache]: Analyzing trace with hash 509875021, now seen corresponding path program 1 times [2020-11-06 22:00:22,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:00:22,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007951429] [2020-11-06 22:00:22,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:00:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:22,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:00:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:22,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:00:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:22,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:22,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:23,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:23,061 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-06 22:00:23,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007951429] [2020-11-06 22:00:23,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139506094] [2020-11-06 22:00:23,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-11-06 22:00:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:23,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 40 conjunts are in the unsatisfiable core [2020-11-06 22:00:23,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:00:23,231 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:00:23,253 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:00:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-06 22:00:23,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:00:23,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 17 [2020-11-06 22:00:23,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408453033] [2020-11-06 22:00:23,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-06 22:00:23,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:00:23,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-06 22:00:23,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-11-06 22:00:23,421 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 17 states. [2020-11-06 22:00:24,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:00:24,392 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2020-11-06 22:00:24,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-06 22:00:24,393 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 38 [2020-11-06 22:00:24,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:00:24,395 INFO L225 Difference]: With dead ends: 51 [2020-11-06 22:00:24,395 INFO L226 Difference]: Without dead ends: 46 [2020-11-06 22:00:24,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2020-11-06 22:00:24,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-06 22:00:24,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 38. [2020-11-06 22:00:24,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-06 22:00:24,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-11-06 22:00:24,403 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 38 [2020-11-06 22:00:24,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:00:24,404 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-11-06 22:00:24,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-06 22:00:24,404 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-11-06 22:00:24,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-06 22:00:24,405 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:00:24,405 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:00:24,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:00:24,620 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:00:24,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:00:24,621 INFO L82 PathProgramCache]: Analyzing trace with hash -221902968, now seen corresponding path program 2 times [2020-11-06 22:00:24,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:00:24,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010380750] [2020-11-06 22:00:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:00:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:24,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:00:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:24,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:00:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:24,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:25,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:25,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:25,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:25,288 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-06 22:00:25,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010380750] [2020-11-06 22:00:25,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754040799] [2020-11-06 22:00:25,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-11-06 22:00:25,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:00:25,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:00:25,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 48 conjunts are in the unsatisfiable core [2020-11-06 22:00:25,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:00:25,476 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:00:25,480 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:00:25,676 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-06 22:00:25,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:00:25,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 20 [2020-11-06 22:00:25,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088779395] [2020-11-06 22:00:25,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-06 22:00:25,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:00:25,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-06 22:00:25,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2020-11-06 22:00:25,679 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 20 states. [2020-11-06 22:00:26,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:00:26,821 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2020-11-06 22:00:26,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-06 22:00:26,822 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 45 [2020-11-06 22:00:26,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:00:26,823 INFO L225 Difference]: With dead ends: 57 [2020-11-06 22:00:26,823 INFO L226 Difference]: Without dead ends: 52 [2020-11-06 22:00:26,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2020-11-06 22:00:26,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-06 22:00:26,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 41. [2020-11-06 22:00:26,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-06 22:00:26,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-11-06 22:00:26,834 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 45 [2020-11-06 22:00:26,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:00:26,834 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-11-06 22:00:26,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-06 22:00:26,834 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-11-06 22:00:26,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-06 22:00:26,835 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:00:26,836 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:00:27,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:00:27,043 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:00:27,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:00:27,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1700064768, now seen corresponding path program 2 times [2020-11-06 22:00:27,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:00:27,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842284661] [2020-11-06 22:00:27,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:00:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:27,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:00:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:27,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:00:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:27,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:27,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:27,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:27,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:27,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:27,666 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-06 22:00:27,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842284661] [2020-11-06 22:00:27,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707804691] [2020-11-06 22:00:27,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-11-06 22:00:27,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:00:27,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:00:27,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 56 conjunts are in the unsatisfiable core [2020-11-06 22:00:27,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:00:27,804 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:00:27,808 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:00:28,012 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-11-06 22:00:28,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:00:28,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 21 [2020-11-06 22:00:28,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080207979] [2020-11-06 22:00:28,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-06 22:00:28,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:00:28,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-06 22:00:28,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-11-06 22:00:28,017 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 21 states. [2020-11-06 22:00:29,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:00:29,363 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-11-06 22:00:29,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-06 22:00:29,363 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 52 [2020-11-06 22:00:29,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:00:29,365 INFO L225 Difference]: With dead ends: 63 [2020-11-06 22:00:29,366 INFO L226 Difference]: Without dead ends: 58 [2020-11-06 22:00:29,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=135, Invalid=1197, Unknown=0, NotChecked=0, Total=1332 [2020-11-06 22:00:29,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-06 22:00:29,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 44. [2020-11-06 22:00:29,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-06 22:00:29,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2020-11-06 22:00:29,376 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 52 [2020-11-06 22:00:29,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:00:29,376 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2020-11-06 22:00:29,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-06 22:00:29,377 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-11-06 22:00:29,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-06 22:00:29,378 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:00:29,378 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:00:29,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:00:29,592 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:00:29,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:00:29,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1817856489, now seen corresponding path program 3 times [2020-11-06 22:00:29,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:00:29,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735129423] [2020-11-06 22:00:29,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:00:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:29,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:00:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:29,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:00:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:29,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:29,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:30,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:30,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:30,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:30,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:30,362 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-11-06 22:00:30,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735129423] [2020-11-06 22:00:30,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9335132] [2020-11-06 22:00:30,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-11-06 22:00:30,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-06 22:00:30,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:00:30,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 64 conjunts are in the unsatisfiable core [2020-11-06 22:00:30,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:00:30,615 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:00:30,618 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:00:30,834 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-11-06 22:00:30,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:00:30,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 24 [2020-11-06 22:00:30,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517647608] [2020-11-06 22:00:30,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-06 22:00:30,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:00:30,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-06 22:00:30,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2020-11-06 22:00:30,837 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 24 states. [2020-11-06 22:00:32,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:00:32,468 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2020-11-06 22:00:32,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-06 22:00:32,468 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 59 [2020-11-06 22:00:32,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:00:32,471 INFO L225 Difference]: With dead ends: 69 [2020-11-06 22:00:32,471 INFO L226 Difference]: Without dead ends: 64 [2020-11-06 22:00:32,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=159, Invalid=1563, Unknown=0, NotChecked=0, Total=1722 [2020-11-06 22:00:32,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-06 22:00:32,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2020-11-06 22:00:32,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-06 22:00:32,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-11-06 22:00:32,481 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 59 [2020-11-06 22:00:32,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:00:32,481 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-11-06 22:00:32,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-06 22:00:32,481 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-11-06 22:00:32,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-06 22:00:32,482 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:00:32,483 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:00:32,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-06 22:00:32,696 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:00:32,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:00:32,697 INFO L82 PathProgramCache]: Analyzing trace with hash -297234765, now seen corresponding path program 3 times [2020-11-06 22:00:32,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:00:32,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951709159] [2020-11-06 22:00:32,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:00:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:32,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:00:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:32,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:00:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:32,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:32,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:33,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:33,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:33,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:33,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:33,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-11-06 22:00:33,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951709159] [2020-11-06 22:00:33,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22560380] [2020-11-06 22:00:33,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-11-06 22:00:33,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-06 22:00:33,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:00:33,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 72 conjunts are in the unsatisfiable core [2020-11-06 22:00:33,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:00:33,575 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:00:33,578 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:00:33,799 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-11-06 22:00:33,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:00:33,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 25 [2020-11-06 22:00:33,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926989035] [2020-11-06 22:00:33,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-06 22:00:33,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:00:33,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-06 22:00:33,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=549, Unknown=0, NotChecked=0, Total=600 [2020-11-06 22:00:33,802 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 25 states. [2020-11-06 22:00:35,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:00:35,621 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2020-11-06 22:00:35,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-06 22:00:35,621 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 66 [2020-11-06 22:00:35,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:00:35,624 INFO L225 Difference]: With dead ends: 75 [2020-11-06 22:00:35,624 INFO L226 Difference]: Without dead ends: 70 [2020-11-06 22:00:35,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=167, Invalid=1813, Unknown=0, NotChecked=0, Total=1980 [2020-11-06 22:00:35,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-06 22:00:35,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 50. [2020-11-06 22:00:35,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-06 22:00:35,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-11-06 22:00:35,633 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 66 [2020-11-06 22:00:35,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:00:35,634 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-11-06 22:00:35,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-11-06 22:00:35,634 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-11-06 22:00:35,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-11-06 22:00:35,635 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:00:35,635 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:00:35,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:00:35,846 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:00:35,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:00:35,847 INFO L82 PathProgramCache]: Analyzing trace with hash -255402166, now seen corresponding path program 4 times [2020-11-06 22:00:35,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:00:35,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940442735] [2020-11-06 22:00:35,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:00:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:36,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:00:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:36,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:00:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:36,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:36,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:36,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:36,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:36,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:36,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:36,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:36,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:36,777 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-11-06 22:00:36,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940442735] [2020-11-06 22:00:36,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477065311] [2020-11-06 22:00:36,778 INFO L93 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 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 [2020-11-06 22:00:36,840 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-06 22:00:36,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:00:36,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 80 conjunts are in the unsatisfiable core [2020-11-06 22:00:36,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:00:37,025 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:00:37,029 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:00:37,260 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-11-06 22:00:37,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:00:37,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 28 [2020-11-06 22:00:37,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75848791] [2020-11-06 22:00:37,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-06 22:00:37,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:00:37,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-06 22:00:37,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=696, Unknown=0, NotChecked=0, Total=756 [2020-11-06 22:00:37,263 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 28 states. [2020-11-06 22:00:39,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:00:39,512 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2020-11-06 22:00:39,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-06 22:00:39,512 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 73 [2020-11-06 22:00:39,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:00:39,513 INFO L225 Difference]: With dead ends: 81 [2020-11-06 22:00:39,514 INFO L226 Difference]: Without dead ends: 76 [2020-11-06 22:00:39,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=191, Invalid=2259, Unknown=0, NotChecked=0, Total=2450 [2020-11-06 22:00:39,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-06 22:00:39,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 53. [2020-11-06 22:00:39,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-06 22:00:39,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-11-06 22:00:39,523 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 73 [2020-11-06 22:00:39,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:00:39,523 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-11-06 22:00:39,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-06 22:00:39,524 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-11-06 22:00:39,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-06 22:00:39,525 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:00:39,525 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:00:39,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:00:39,739 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:00:39,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:00:39,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1922237798, now seen corresponding path program 4 times [2020-11-06 22:00:39,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:00:39,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150156377] [2020-11-06 22:00:39,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:00:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:39,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:00:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:39,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:00:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:39,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:40,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:40,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:40,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:40,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:40,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:40,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:40,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:40,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:40,640 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-11-06 22:00:40,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150156377] [2020-11-06 22:00:40,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557431859] [2020-11-06 22:00:40,641 INFO L93 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 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 [2020-11-06 22:00:40,717 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-06 22:00:40,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:00:40,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 88 conjunts are in the unsatisfiable core [2020-11-06 22:00:40,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:00:40,848 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:00:40,858 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:00:41,076 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-11-06 22:00:41,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:00:41,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 29 [2020-11-06 22:00:41,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102620280] [2020-11-06 22:00:41,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-06 22:00:41,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:00:41,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-06 22:00:41,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=753, Unknown=0, NotChecked=0, Total=812 [2020-11-06 22:00:41,078 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 29 states. [2020-11-06 22:00:43,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:00:43,599 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2020-11-06 22:00:43,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-06 22:00:43,600 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 80 [2020-11-06 22:00:43,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:00:43,601 INFO L225 Difference]: With dead ends: 87 [2020-11-06 22:00:43,602 INFO L226 Difference]: Without dead ends: 82 [2020-11-06 22:00:43,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 96 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=199, Invalid=2557, Unknown=0, NotChecked=0, Total=2756 [2020-11-06 22:00:43,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-11-06 22:00:43,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 56. [2020-11-06 22:00:43,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-06 22:00:43,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-11-06 22:00:43,611 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 80 [2020-11-06 22:00:43,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:00:43,612 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-11-06 22:00:43,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-11-06 22:00:43,612 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-11-06 22:00:43,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-11-06 22:00:43,620 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:00:43,620 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:00:43,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-06 22:00:43,836 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:00:43,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:00:43,837 INFO L82 PathProgramCache]: Analyzing trace with hash 2071918507, now seen corresponding path program 5 times [2020-11-06 22:00:43,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:00:43,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839350823] [2020-11-06 22:00:43,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:00:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:44,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:00:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:44,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:00:44,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:44,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:44,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:44,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:44,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:44,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:44,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:44,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:44,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:44,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:44,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-11-06 22:00:44,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839350823] [2020-11-06 22:00:44,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930466175] [2020-11-06 22:00:44,955 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-11-06 22:00:45,026 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-06 22:00:45,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:00:45,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 96 conjunts are in the unsatisfiable core [2020-11-06 22:00:45,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:00:45,258 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:00:45,260 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:00:45,509 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-11-06 22:00:45,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:00:45,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 32 [2020-11-06 22:00:45,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705201322] [2020-11-06 22:00:45,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-06 22:00:45,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:00:45,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-06 22:00:45,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=924, Unknown=0, NotChecked=0, Total=992 [2020-11-06 22:00:45,511 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 32 states. [2020-11-06 22:00:48,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:00:48,373 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2020-11-06 22:00:48,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-06 22:00:48,379 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 87 [2020-11-06 22:00:48,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:00:48,380 INFO L225 Difference]: With dead ends: 93 [2020-11-06 22:00:48,380 INFO L226 Difference]: Without dead ends: 88 [2020-11-06 22:00:48,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=223, Invalid=3083, Unknown=0, NotChecked=0, Total=3306 [2020-11-06 22:00:48,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-11-06 22:00:48,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 59. [2020-11-06 22:00:48,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-06 22:00:48,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2020-11-06 22:00:48,395 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 87 [2020-11-06 22:00:48,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:00:48,396 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2020-11-06 22:00:48,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-11-06 22:00:48,396 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2020-11-06 22:00:48,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-11-06 22:00:48,397 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:00:48,398 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:00:48,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:00:48,599 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:00:48,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:00:48,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1811964441, now seen corresponding path program 5 times [2020-11-06 22:00:48,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:00:48,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104601025] [2020-11-06 22:00:48,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:00:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:48,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:00:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:48,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:00:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:48,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:48,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:48,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:49,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:49,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:49,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:49,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:49,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:49,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:49,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:49,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-11-06 22:00:49,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104601025] [2020-11-06 22:00:49,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715767016] [2020-11-06 22:00:49,825 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-11-06 22:00:49,905 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-06 22:00:49,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:00:49,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 104 conjunts are in the unsatisfiable core [2020-11-06 22:00:49,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:00:50,070 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:00:50,079 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:00:50,311 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-11-06 22:00:50,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:00:50,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 34 [2020-11-06 22:00:50,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203950923] [2020-11-06 22:00:50,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-11-06 22:00:50,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:00:50,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-11-06 22:00:50,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1051, Unknown=0, NotChecked=0, Total=1122 [2020-11-06 22:00:50,315 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 34 states. [2020-11-06 22:00:53,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:00:53,612 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2020-11-06 22:00:53,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-06 22:00:53,612 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 94 [2020-11-06 22:00:53,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:00:53,614 INFO L225 Difference]: With dead ends: 99 [2020-11-06 22:00:53,614 INFO L226 Difference]: Without dead ends: 94 [2020-11-06 22:00:53,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=238, Invalid=3544, Unknown=0, NotChecked=0, Total=3782 [2020-11-06 22:00:53,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-11-06 22:00:53,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 62. [2020-11-06 22:00:53,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-06 22:00:53,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2020-11-06 22:00:53,622 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 94 [2020-11-06 22:00:53,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:00:53,622 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2020-11-06 22:00:53,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-11-06 22:00:53,623 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2020-11-06 22:00:53,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-06 22:00:53,624 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:00:53,624 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:00:53,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-06 22:00:53,827 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:00:53,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:00:53,828 INFO L82 PathProgramCache]: Analyzing trace with hash -527580404, now seen corresponding path program 6 times [2020-11-06 22:00:53,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:00:53,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685294534] [2020-11-06 22:00:53,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:00:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:54,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:00:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:54,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:00:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:54,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:54,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:54,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:54,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:54,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:54,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:54,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:54,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:54,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:54,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:54,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:55,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:55,219 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-11-06 22:00:55,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685294534] [2020-11-06 22:00:55,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229739202] [2020-11-06 22:00:55,220 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-11-06 22:00:55,296 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-06 22:00:55,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:00:55,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 112 conjunts are in the unsatisfiable core [2020-11-06 22:00:55,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:00:55,527 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:00:55,530 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:00:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-11-06 22:00:55,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:00:55,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 36 [2020-11-06 22:00:55,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269239676] [2020-11-06 22:00:55,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-06 22:00:55,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:00:55,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-06 22:00:55,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1184, Unknown=0, NotChecked=0, Total=1260 [2020-11-06 22:00:55,808 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand 36 states. [2020-11-06 22:00:59,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:00:59,409 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2020-11-06 22:00:59,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-06 22:00:59,410 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 101 [2020-11-06 22:00:59,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:00:59,411 INFO L225 Difference]: With dead ends: 105 [2020-11-06 22:00:59,412 INFO L226 Difference]: Without dead ends: 100 [2020-11-06 22:00:59,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=255, Invalid=4035, Unknown=0, NotChecked=0, Total=4290 [2020-11-06 22:00:59,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-11-06 22:00:59,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 65. [2020-11-06 22:00:59,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-06 22:00:59,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2020-11-06 22:00:59,421 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 101 [2020-11-06 22:00:59,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:00:59,421 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2020-11-06 22:00:59,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-11-06 22:00:59,421 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2020-11-06 22:00:59,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-11-06 22:00:59,422 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:00:59,422 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:00:59,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-06 22:00:59,637 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:00:59,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:00:59,637 INFO L82 PathProgramCache]: Analyzing trace with hash -204163892, now seen corresponding path program 6 times [2020-11-06 22:00:59,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:00:59,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377147802] [2020-11-06 22:00:59,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:00:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:59,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:00:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:59,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:00:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:59,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:59,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:00:59,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:00:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:00,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:00,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:00,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:00,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:00,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:00,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:00,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:00,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:00,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:00,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:01,132 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-11-06 22:01:01,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377147802] [2020-11-06 22:01:01,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231707319] [2020-11-06 22:01:01,135 INFO L93 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 [2020-11-06 22:01:01,219 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-06 22:01:01,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:01:01,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 120 conjunts are in the unsatisfiable core [2020-11-06 22:01:01,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:01:01,410 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:01:01,413 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:01:01,665 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-11-06 22:01:01,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:01:01,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 37 [2020-11-06 22:01:01,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51537111] [2020-11-06 22:01:01,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-06 22:01:01,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:01:01,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-06 22:01:01,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1257, Unknown=0, NotChecked=0, Total=1332 [2020-11-06 22:01:01,667 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 37 states. [2020-11-06 22:01:05,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:01:05,835 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2020-11-06 22:01:05,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-06 22:01:05,835 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 108 [2020-11-06 22:01:05,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:01:05,837 INFO L225 Difference]: With dead ends: 111 [2020-11-06 22:01:05,837 INFO L226 Difference]: Without dead ends: 106 [2020-11-06 22:01:05,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 133 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=263, Invalid=4429, Unknown=0, NotChecked=0, Total=4692 [2020-11-06 22:01:05,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-06 22:01:05,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 68. [2020-11-06 22:01:05,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-06 22:01:05,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2020-11-06 22:01:05,846 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 108 [2020-11-06 22:01:05,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:01:05,846 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2020-11-06 22:01:05,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-11-06 22:01:05,847 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2020-11-06 22:01:05,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-11-06 22:01:05,848 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:01:05,848 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:01:06,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-06 22:01:06,064 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:01:06,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:01:06,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1047105171, now seen corresponding path program 7 times [2020-11-06 22:01:06,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:01:06,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742347107] [2020-11-06 22:01:06,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:01:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:06,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:01:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:06,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:01:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:06,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:06,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:06,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:06,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:06,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:06,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:07,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:07,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:07,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:07,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:07,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:07,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:07,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:07,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-11-06 22:01:07,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742347107] [2020-11-06 22:01:07,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983874990] [2020-11-06 22:01:07,981 INFO L93 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 [2020-11-06 22:01:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:08,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 128 conjunts are in the unsatisfiable core [2020-11-06 22:01:08,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:01:08,334 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:01:08,342 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:01:08,651 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-11-06 22:01:08,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:01:08,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36] total 40 [2020-11-06 22:01:08,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767398134] [2020-11-06 22:01:08,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-11-06 22:01:08,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:01:08,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-11-06 22:01:08,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1476, Unknown=0, NotChecked=0, Total=1560 [2020-11-06 22:01:08,654 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand 40 states. [2020-11-06 22:01:13,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:01:13,097 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2020-11-06 22:01:13,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-06 22:01:13,098 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 115 [2020-11-06 22:01:13,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:01:13,099 INFO L225 Difference]: With dead ends: 117 [2020-11-06 22:01:13,099 INFO L226 Difference]: Without dead ends: 112 [2020-11-06 22:01:13,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=287, Invalid=5115, Unknown=0, NotChecked=0, Total=5402 [2020-11-06 22:01:13,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-11-06 22:01:13,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 71. [2020-11-06 22:01:13,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-06 22:01:13,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2020-11-06 22:01:13,114 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 115 [2020-11-06 22:01:13,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:01:13,115 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2020-11-06 22:01:13,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-11-06 22:01:13,115 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2020-11-06 22:01:13,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-11-06 22:01:13,117 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:01:13,117 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:01:13,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-06 22:01:13,332 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:01:13,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:01:13,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1580462721, now seen corresponding path program 7 times [2020-11-06 22:01:13,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:01:13,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234022860] [2020-11-06 22:01:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:01:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:13,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:01:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:13,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:01:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:13,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:13,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:13,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:13,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:13,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:13,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:14,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:14,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:14,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:14,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:14,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:14,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:14,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:14,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:14,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:15,133 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2020-11-06 22:01:15,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234022860] [2020-11-06 22:01:15,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524876966] [2020-11-06 22:01:15,133 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-11-06 22:01:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:15,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 136 conjunts are in the unsatisfiable core [2020-11-06 22:01:15,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:01:15,446 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:01:15,450 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:01:15,750 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2020-11-06 22:01:15,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:01:15,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 42 [2020-11-06 22:01:15,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102461387] [2020-11-06 22:01:15,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-11-06 22:01:15,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:01:15,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-11-06 22:01:15,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1635, Unknown=0, NotChecked=0, Total=1722 [2020-11-06 22:01:15,752 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 42 states. [2020-11-06 22:01:20,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:01:20,719 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2020-11-06 22:01:20,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-06 22:01:20,719 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 122 [2020-11-06 22:01:20,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:01:20,721 INFO L225 Difference]: With dead ends: 123 [2020-11-06 22:01:20,721 INFO L226 Difference]: Without dead ends: 118 [2020-11-06 22:01:20,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=302, Invalid=5704, Unknown=0, NotChecked=0, Total=6006 [2020-11-06 22:01:20,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-11-06 22:01:20,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 74. [2020-11-06 22:01:20,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-06 22:01:20,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2020-11-06 22:01:20,728 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 122 [2020-11-06 22:01:20,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:01:20,728 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2020-11-06 22:01:20,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-11-06 22:01:20,728 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2020-11-06 22:01:20,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-11-06 22:01:20,729 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:01:20,729 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:01:20,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:01:20,940 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:01:20,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:01:20,941 INFO L82 PathProgramCache]: Analyzing trace with hash -2100022578, now seen corresponding path program 8 times [2020-11-06 22:01:20,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:01:20,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280928803] [2020-11-06 22:01:20,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:01:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:21,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:01:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:21,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:01:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:21,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:21,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:21,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:21,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:21,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:21,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:21,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:21,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:21,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:22,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:22,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:22,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:22,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:22,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:22,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:22,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2020-11-06 22:01:23,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280928803] [2020-11-06 22:01:23,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941195388] [2020-11-06 22:01:23,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-11-06 22:01:23,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:01:23,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:01:23,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 144 conjunts are in the unsatisfiable core [2020-11-06 22:01:23,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:01:23,396 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:01:23,405 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:01:23,723 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2020-11-06 22:01:23,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:01:23,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 44 [2020-11-06 22:01:23,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993689657] [2020-11-06 22:01:23,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-11-06 22:01:23,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:01:23,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-11-06 22:01:23,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1800, Unknown=0, NotChecked=0, Total=1892 [2020-11-06 22:01:23,726 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand 44 states. [2020-11-06 22:01:29,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:01:29,279 INFO L93 Difference]: Finished difference Result 129 states and 131 transitions. [2020-11-06 22:01:29,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-06 22:01:29,280 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 129 [2020-11-06 22:01:29,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:01:29,281 INFO L225 Difference]: With dead ends: 129 [2020-11-06 22:01:29,281 INFO L226 Difference]: Without dead ends: 124 [2020-11-06 22:01:29,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 158 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=319, Invalid=6323, Unknown=0, NotChecked=0, Total=6642 [2020-11-06 22:01:29,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-06 22:01:29,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 77. [2020-11-06 22:01:29,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-06 22:01:29,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2020-11-06 22:01:29,290 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 129 [2020-11-06 22:01:29,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:01:29,291 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2020-11-06 22:01:29,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-11-06 22:01:29,291 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2020-11-06 22:01:29,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-06 22:01:29,292 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:01:29,292 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:01:29,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:01:29,497 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:01:29,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:01:29,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1796897842, now seen corresponding path program 8 times [2020-11-06 22:01:29,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:01:29,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115194853] [2020-11-06 22:01:29,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:01:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:29,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:01:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:29,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:01:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:29,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:29,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:29,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:29,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:29,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:30,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:30,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:30,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:30,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:30,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:30,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:30,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:30,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:30,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:31,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:31,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:31,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:31,651 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2020-11-06 22:01:31,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115194853] [2020-11-06 22:01:31,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135744589] [2020-11-06 22:01:31,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-11-06 22:01:31,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:01:31,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:01:31,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 152 conjunts are in the unsatisfiable core [2020-11-06 22:01:31,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:01:31,991 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:01:31,995 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:01:32,373 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2020-11-06 22:01:32,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:01:32,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 45 [2020-11-06 22:01:32,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487754791] [2020-11-06 22:01:32,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-11-06 22:01:32,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:01:32,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-11-06 22:01:32,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1890, Unknown=0, NotChecked=0, Total=1980 [2020-11-06 22:01:32,378 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 45 states. [2020-11-06 22:01:38,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:01:38,364 INFO L93 Difference]: Finished difference Result 135 states and 137 transitions. [2020-11-06 22:01:38,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-06 22:01:38,364 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 136 [2020-11-06 22:01:38,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:01:38,365 INFO L225 Difference]: With dead ends: 135 [2020-11-06 22:01:38,366 INFO L226 Difference]: Without dead ends: 130 [2020-11-06 22:01:38,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 169 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 822 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=326, Invalid=6814, Unknown=0, NotChecked=0, Total=7140 [2020-11-06 22:01:38,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-11-06 22:01:38,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 80. [2020-11-06 22:01:38,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-11-06 22:01:38,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2020-11-06 22:01:38,379 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 136 [2020-11-06 22:01:38,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:01:38,380 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2020-11-06 22:01:38,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-11-06 22:01:38,380 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2020-11-06 22:01:38,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-11-06 22:01:38,381 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:01:38,381 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:01:38,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:01:38,594 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:01:38,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:01:38,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1075459887, now seen corresponding path program 9 times [2020-11-06 22:01:38,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:01:38,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979280346] [2020-11-06 22:01:38,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:01:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:38,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:01:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:38,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:01:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:38,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:38,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:39,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:39,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:39,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:39,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:39,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:39,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:39,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:39,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:39,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:39,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:40,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:40,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:40,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:40,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:40,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:40,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:40,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:41,252 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-11-06 22:01:41,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979280346] [2020-11-06 22:01:41,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858327699] [2020-11-06 22:01:41,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-11-06 22:01:41,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-06 22:01:41,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:01:41,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 160 conjunts are in the unsatisfiable core [2020-11-06 22:01:41,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:01:41,700 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:01:41,702 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:01:42,102 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-11-06 22:01:42,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:01:42,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 48 [2020-11-06 22:01:42,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546678913] [2020-11-06 22:01:42,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-11-06 22:01:42,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:01:42,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-11-06 22:01:42,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=2156, Unknown=0, NotChecked=0, Total=2256 [2020-11-06 22:01:42,104 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand 48 states. [2020-11-06 22:01:48,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:01:48,740 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2020-11-06 22:01:48,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-06 22:01:48,744 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 143 [2020-11-06 22:01:48,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:01:48,745 INFO L225 Difference]: With dead ends: 141 [2020-11-06 22:01:48,745 INFO L226 Difference]: Without dead ends: 136 [2020-11-06 22:01:48,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=351, Invalid=7659, Unknown=0, NotChecked=0, Total=8010 [2020-11-06 22:01:48,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-06 22:01:48,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 83. [2020-11-06 22:01:48,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-06 22:01:48,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-11-06 22:01:48,752 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 143 [2020-11-06 22:01:48,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:01:48,753 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-11-06 22:01:48,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-11-06 22:01:48,753 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-11-06 22:01:48,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-11-06 22:01:48,754 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:01:48,754 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:01:48,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-06 22:01:48,967 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:01:48,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:01:48,967 INFO L82 PathProgramCache]: Analyzing trace with hash -2123624219, now seen corresponding path program 9 times [2020-11-06 22:01:48,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:01:48,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662084615] [2020-11-06 22:01:48,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:01:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:49,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:01:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:49,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:01:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:49,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:49,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:49,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:49,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:49,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:49,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:49,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:49,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:49,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:50,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:50,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:50,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:50,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:50,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:50,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:50,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:51,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:51,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:51,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:01:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:01:51,785 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2020-11-06 22:01:51,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662084615] [2020-11-06 22:01:51,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365884159] [2020-11-06 22:01:51,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-11-06 22:01:51,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-06 22:01:51,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:01:51,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 168 conjunts are in the unsatisfiable core [2020-11-06 22:01:51,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:01:52,097 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:01:52,104 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:01:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2020-11-06 22:01:52,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:01:52,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 49 [2020-11-06 22:01:52,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336976435] [2020-11-06 22:01:52,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-11-06 22:01:52,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:01:52,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-11-06 22:01:52,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=2253, Unknown=0, NotChecked=0, Total=2352 [2020-11-06 22:01:52,446 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 49 states. [2020-11-06 22:01:59,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:01:59,756 INFO L93 Difference]: Finished difference Result 147 states and 149 transitions. [2020-11-06 22:01:59,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-06 22:01:59,756 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 150 [2020-11-06 22:01:59,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:01:59,758 INFO L225 Difference]: With dead ends: 147 [2020-11-06 22:01:59,758 INFO L226 Difference]: Without dead ends: 142 [2020-11-06 22:01:59,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 186 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=359, Invalid=8197, Unknown=0, NotChecked=0, Total=8556 [2020-11-06 22:01:59,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-06 22:01:59,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 86. [2020-11-06 22:01:59,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-06 22:01:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2020-11-06 22:01:59,765 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 150 [2020-11-06 22:01:59,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:01:59,766 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2020-11-06 22:01:59,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-11-06 22:01:59,766 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2020-11-06 22:01:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-11-06 22:01:59,767 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:01:59,767 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:01:59,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-06 22:01:59,981 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:01:59,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:01:59,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1043091824, now seen corresponding path program 10 times [2020-11-06 22:01:59,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:01:59,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641933252] [2020-11-06 22:01:59,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:01:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:00,164 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 18 [2020-11-06 22:02:00,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:02:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:00,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:02:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:00,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:00,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:00,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:00,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:00,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:00,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:00,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:00,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:01,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:01,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:01,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:01,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:01,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:01,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:01,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:02,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:02,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:02,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:02,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:02,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2020-11-06 22:02:03,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641933252] [2020-11-06 22:02:03,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385310169] [2020-11-06 22:02:03,225 INFO L93 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 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 [2020-11-06 22:02:03,326 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-06 22:02:03,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:02:03,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 176 conjunts are in the unsatisfiable core [2020-11-06 22:02:03,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:02:03,723 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:02:03,725 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:02:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2020-11-06 22:02:04,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:02:04,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48] total 52 [2020-11-06 22:02:04,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244187156] [2020-11-06 22:02:04,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-11-06 22:02:04,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:02:04,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-11-06 22:02:04,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2544, Unknown=0, NotChecked=0, Total=2652 [2020-11-06 22:02:04,104 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 52 states. [2020-11-06 22:02:11,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:02:11,847 INFO L93 Difference]: Finished difference Result 153 states and 155 transitions. [2020-11-06 22:02:11,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-11-06 22:02:11,849 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 157 [2020-11-06 22:02:11,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:02:11,851 INFO L225 Difference]: With dead ends: 153 [2020-11-06 22:02:11,851 INFO L226 Difference]: Without dead ends: 148 [2020-11-06 22:02:11,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=383, Invalid=9123, Unknown=0, NotChecked=0, Total=9506 [2020-11-06 22:02:11,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-11-06 22:02:11,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 89. [2020-11-06 22:02:11,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-06 22:02:11,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2020-11-06 22:02:11,858 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 157 [2020-11-06 22:02:11,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:02:11,858 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2020-11-06 22:02:11,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-11-06 22:02:11,859 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2020-11-06 22:02:11,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-11-06 22:02:11,860 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:02:11,860 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:02:12,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-06 22:02:12,072 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:02:12,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:02:12,072 INFO L82 PathProgramCache]: Analyzing trace with hash 837082008, now seen corresponding path program 10 times [2020-11-06 22:02:12,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:02:12,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560482905] [2020-11-06 22:02:12,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:02:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:12,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:02:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:12,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:02:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:12,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:12,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:12,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:12,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:12,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:12,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:12,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:12,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:13,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:13,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:13,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:13,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:13,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:13,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:13,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:14,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:14,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:14,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:14,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:14,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:14,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:15,366 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2020-11-06 22:02:15,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560482905] [2020-11-06 22:02:15,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032183974] [2020-11-06 22:02:15,367 INFO L93 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 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 [2020-11-06 22:02:15,465 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-06 22:02:15,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:02:15,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 184 conjunts are in the unsatisfiable core [2020-11-06 22:02:15,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:02:15,779 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:02:15,781 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:02:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2020-11-06 22:02:16,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:02:16,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 53 [2020-11-06 22:02:16,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987580812] [2020-11-06 22:02:16,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-11-06 22:02:16,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:02:16,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-11-06 22:02:16,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2649, Unknown=0, NotChecked=0, Total=2756 [2020-11-06 22:02:16,233 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 53 states. [2020-11-06 22:02:24,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:02:24,718 INFO L93 Difference]: Finished difference Result 159 states and 161 transitions. [2020-11-06 22:02:24,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-11-06 22:02:24,719 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 164 [2020-11-06 22:02:24,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:02:24,720 INFO L225 Difference]: With dead ends: 159 [2020-11-06 22:02:24,720 INFO L226 Difference]: Without dead ends: 154 [2020-11-06 22:02:24,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 205 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1182 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=391, Invalid=9709, Unknown=0, NotChecked=0, Total=10100 [2020-11-06 22:02:24,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-06 22:02:24,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 92. [2020-11-06 22:02:24,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-06 22:02:24,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2020-11-06 22:02:24,728 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 164 [2020-11-06 22:02:24,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:02:24,728 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2020-11-06 22:02:24,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-11-06 22:02:24,728 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2020-11-06 22:02:24,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-06 22:02:24,729 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:02:24,729 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:02:24,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-06 22:02:24,944 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:02:24,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:02:24,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1912850673, now seen corresponding path program 11 times [2020-11-06 22:02:24,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:02:24,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064544078] [2020-11-06 22:02:24,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:02:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:25,150 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 18 [2020-11-06 22:02:25,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:02:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:25,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:02:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:25,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:25,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:25,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:25,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:25,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:25,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:25,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:25,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:26,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:26,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:26,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:26,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:26,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:26,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:26,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:27,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:27,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:27,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:27,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:27,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:28,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:28,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2020-11-06 22:02:28,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064544078] [2020-11-06 22:02:28,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096963803] [2020-11-06 22:02:28,668 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-11-06 22:02:28,770 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-06 22:02:28,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:02:28,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 192 conjunts are in the unsatisfiable core [2020-11-06 22:02:28,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:02:29,209 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:02:29,216 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:02:29,604 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2020-11-06 22:02:29,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:02:29,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 56 [2020-11-06 22:02:29,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128513435] [2020-11-06 22:02:29,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-11-06 22:02:29,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:02:29,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-11-06 22:02:29,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=2964, Unknown=0, NotChecked=0, Total=3080 [2020-11-06 22:02:29,606 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand 56 states. [2020-11-06 22:02:38,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:02:38,837 INFO L93 Difference]: Finished difference Result 165 states and 167 transitions. [2020-11-06 22:02:38,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-11-06 22:02:38,839 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 171 [2020-11-06 22:02:38,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:02:38,840 INFO L225 Difference]: With dead ends: 165 [2020-11-06 22:02:38,841 INFO L226 Difference]: Without dead ends: 160 [2020-11-06 22:02:38,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 212 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=415, Invalid=10715, Unknown=0, NotChecked=0, Total=11130 [2020-11-06 22:02:38,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-11-06 22:02:38,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 95. [2020-11-06 22:02:38,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-11-06 22:02:38,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2020-11-06 22:02:38,847 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 171 [2020-11-06 22:02:38,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:02:38,848 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2020-11-06 22:02:38,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-11-06 22:02:38,848 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2020-11-06 22:02:38,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-11-06 22:02:38,849 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:02:38,849 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:02:39,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-11-06 22:02:39,064 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:02:39,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:02:39,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1004475317, now seen corresponding path program 11 times [2020-11-06 22:02:39,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:02:39,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714010197] [2020-11-06 22:02:39,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:02:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:39,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:02:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:39,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:02:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:39,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:39,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:39,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:39,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:39,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:39,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:39,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:40,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:40,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:40,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:40,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:40,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:40,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:40,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:41,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:41,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:41,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:41,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:41,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:41,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:42,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:42,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:42,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:43,059 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2020-11-06 22:02:43,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714010197] [2020-11-06 22:02:43,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541408012] [2020-11-06 22:02:43,061 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-11-06 22:02:43,166 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-06 22:02:43,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:02:43,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 200 conjunts are in the unsatisfiable core [2020-11-06 22:02:43,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:02:43,518 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:02:43,521 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:02:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2020-11-06 22:02:43,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:02:43,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54] total 58 [2020-11-06 22:02:43,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846777719] [2020-11-06 22:02:44,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-11-06 22:02:44,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:02:44,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-11-06 22:02:44,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=3187, Unknown=0, NotChecked=0, Total=3306 [2020-11-06 22:02:44,001 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 58 states. [2020-11-06 22:02:53,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:02:53,859 INFO L93 Difference]: Finished difference Result 171 states and 173 transitions. [2020-11-06 22:02:53,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-11-06 22:02:53,860 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 178 [2020-11-06 22:02:53,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:02:53,861 INFO L225 Difference]: With dead ends: 171 [2020-11-06 22:02:53,861 INFO L226 Difference]: Without dead ends: 166 [2020-11-06 22:02:53,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1533 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=430, Invalid=11560, Unknown=0, NotChecked=0, Total=11990 [2020-11-06 22:02:53,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-11-06 22:02:53,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 98. [2020-11-06 22:02:53,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-06 22:02:53,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2020-11-06 22:02:53,868 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 178 [2020-11-06 22:02:53,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:02:53,869 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions. [2020-11-06 22:02:53,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-11-06 22:02:53,869 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions. [2020-11-06 22:02:53,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-11-06 22:02:53,870 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:02:53,870 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:02:54,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:02:54,085 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:02:54,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:02:54,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1363523154, now seen corresponding path program 12 times [2020-11-06 22:02:54,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:02:54,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226226424] [2020-11-06 22:02:54,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:02:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:54,281 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 18 [2020-11-06 22:02:54,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:02:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:54,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:02:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:54,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:54,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:54,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:54,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:54,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:54,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:55,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:55,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:55,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:55,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:55,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:55,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:55,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:55,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:56,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:56,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:56,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:56,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:56,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:57,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:57,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:57,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:57,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:57,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:02:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:02:58,450 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2020-11-06 22:02:58,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226226424] [2020-11-06 22:02:58,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985259283] [2020-11-06 22:02:58,451 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-11-06 22:02:58,570 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-06 22:02:58,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:02:58,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 208 conjunts are in the unsatisfiable core [2020-11-06 22:02:58,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:02:59,030 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:02:59,038 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:02:59,469 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2020-11-06 22:02:59,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:02:59,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 60 [2020-11-06 22:02:59,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213668625] [2020-11-06 22:02:59,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-11-06 22:02:59,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:02:59,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-11-06 22:02:59,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=3416, Unknown=0, NotChecked=0, Total=3540 [2020-11-06 22:02:59,471 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand 60 states. [2020-11-06 22:03:10,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:03:10,147 INFO L93 Difference]: Finished difference Result 177 states and 179 transitions. [2020-11-06 22:03:10,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-11-06 22:03:10,151 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 185 [2020-11-06 22:03:10,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:03:10,153 INFO L225 Difference]: With dead ends: 177 [2020-11-06 22:03:10,153 INFO L226 Difference]: Without dead ends: 172 [2020-11-06 22:03:10,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 230 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=447, Invalid=12435, Unknown=0, NotChecked=0, Total=12882 [2020-11-06 22:03:10,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-11-06 22:03:10,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 101. [2020-11-06 22:03:10,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-11-06 22:03:10,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2020-11-06 22:03:10,161 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 185 [2020-11-06 22:03:10,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:03:10,162 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2020-11-06 22:03:10,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-11-06 22:03:10,162 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2020-11-06 22:03:10,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-11-06 22:03:10,163 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:03:10,163 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:03:10,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-11-06 22:03:10,378 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:03:10,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:03:10,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1496601342, now seen corresponding path program 12 times [2020-11-06 22:03:10,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:03:10,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738922252] [2020-11-06 22:03:10,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:03:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:10,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:03:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:10,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:03:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:10,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:10,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:10,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:10,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:10,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:11,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:11,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:11,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:11,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:11,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:11,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:11,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:12,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:12,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:12,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:12,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:12,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:12,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:13,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:13,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:13,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:13,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:13,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:14,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:14,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:14,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 456 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2020-11-06 22:03:14,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738922252] [2020-11-06 22:03:14,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461131781] [2020-11-06 22:03:14,948 INFO L93 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 [2020-11-06 22:03:15,066 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-06 22:03:15,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:03:15,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 216 conjunts are in the unsatisfiable core [2020-11-06 22:03:15,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:03:15,444 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:03:15,451 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:03:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 456 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2020-11-06 22:03:15,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:03:15,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 61 [2020-11-06 22:03:15,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384830912] [2020-11-06 22:03:15,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-11-06 22:03:15,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:03:15,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-11-06 22:03:15,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3537, Unknown=0, NotChecked=0, Total=3660 [2020-11-06 22:03:15,873 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 61 states. [2020-11-06 22:03:27,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:03:27,339 INFO L93 Difference]: Finished difference Result 183 states and 185 transitions. [2020-11-06 22:03:27,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-11-06 22:03:27,339 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 192 [2020-11-06 22:03:27,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:03:27,341 INFO L225 Difference]: With dead ends: 183 [2020-11-06 22:03:27,341 INFO L226 Difference]: Without dead ends: 178 [2020-11-06 22:03:27,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 241 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1602 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=455, Invalid=13117, Unknown=0, NotChecked=0, Total=13572 [2020-11-06 22:03:27,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-11-06 22:03:27,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 104. [2020-11-06 22:03:27,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-11-06 22:03:27,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions. [2020-11-06 22:03:27,348 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 192 [2020-11-06 22:03:27,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:03:27,349 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 106 transitions. [2020-11-06 22:03:27,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-11-06 22:03:27,349 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 106 transitions. [2020-11-06 22:03:27,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-11-06 22:03:27,350 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:03:27,350 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:03:27,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-11-06 22:03:27,552 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:03:27,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:03:27,553 INFO L82 PathProgramCache]: Analyzing trace with hash -338909517, now seen corresponding path program 13 times [2020-11-06 22:03:27,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:03:27,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381064817] [2020-11-06 22:03:27,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:03:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:27,758 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 18 [2020-11-06 22:03:27,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:03:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:27,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:03:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:27,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:27,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:28,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:28,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:28,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:28,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:28,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:28,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:28,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:28,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:29,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:29,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:29,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:29,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:29,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:29,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:30,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:30,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:30,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:30,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:30,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:31,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:31,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:31,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:31,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:32,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2020-11-06 22:03:32,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381064817] [2020-11-06 22:03:32,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049500407] [2020-11-06 22:03:32,679 INFO L93 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 [2020-11-06 22:03:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:32,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 224 conjunts are in the unsatisfiable core [2020-11-06 22:03:32,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:03:33,310 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:03:33,315 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:03:33,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2020-11-06 22:03:33,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:03:33,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60] total 64 [2020-11-06 22:03:33,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387568926] [2020-11-06 22:03:33,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-11-06 22:03:33,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:03:33,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-11-06 22:03:33,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=3900, Unknown=0, NotChecked=0, Total=4032 [2020-11-06 22:03:33,835 INFO L87 Difference]: Start difference. First operand 104 states and 106 transitions. Second operand 64 states. [2020-11-06 22:03:46,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:03:46,064 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions. [2020-11-06 22:03:46,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-11-06 22:03:46,070 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 199 [2020-11-06 22:03:46,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:03:46,071 INFO L225 Difference]: With dead ends: 189 [2020-11-06 22:03:46,071 INFO L226 Difference]: Without dead ends: 184 [2020-11-06 22:03:46,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 248 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=479, Invalid=14283, Unknown=0, NotChecked=0, Total=14762 [2020-11-06 22:03:46,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-11-06 22:03:46,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 107. [2020-11-06 22:03:46,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-06 22:03:46,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2020-11-06 22:03:46,093 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 199 [2020-11-06 22:03:46,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:03:46,093 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2020-11-06 22:03:46,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-11-06 22:03:46,093 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2020-11-06 22:03:46,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-11-06 22:03:46,095 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:03:46,095 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:03:46,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:03:46,310 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:03:46,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:03:46,311 INFO L82 PathProgramCache]: Analyzing trace with hash -894754895, now seen corresponding path program 13 times [2020-11-06 22:03:46,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:03:46,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358666950] [2020-11-06 22:03:46,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:03:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:46,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:03:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:46,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:03:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:46,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:46,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:46,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:46,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:47,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:47,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:47,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:47,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:47,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:47,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:47,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:47,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:48,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:48,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:48,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:48,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:48,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:49,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:49,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:49,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:49,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:49,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:50,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:50,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:50,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:50,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:51,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:03:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:51,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2020-11-06 22:03:51,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358666950] [2020-11-06 22:03:51,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079974172] [2020-11-06 22:03:51,790 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-11-06 22:03:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:03:51,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 232 conjunts are in the unsatisfiable core [2020-11-06 22:03:51,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:03:52,319 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:03:52,327 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:03:52,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1248 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2020-11-06 22:03:52,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:03:52,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 65 [2020-11-06 22:03:52,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839571982] [2020-11-06 22:03:52,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-11-06 22:03:52,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:03:52,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-11-06 22:03:52,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=4029, Unknown=0, NotChecked=0, Total=4160 [2020-11-06 22:03:52,796 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 65 states. [2020-11-06 22:04:06,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:04:06,039 INFO L93 Difference]: Finished difference Result 195 states and 197 transitions. [2020-11-06 22:04:06,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-11-06 22:04:06,039 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 206 [2020-11-06 22:04:06,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:04:06,042 INFO L225 Difference]: With dead ends: 195 [2020-11-06 22:04:06,042 INFO L226 Difference]: Without dead ends: 190 [2020-11-06 22:04:06,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 259 SyntacticMatches, 2 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=487, Invalid=15013, Unknown=0, NotChecked=0, Total=15500 [2020-11-06 22:04:06,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-11-06 22:04:06,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 110. [2020-11-06 22:04:06,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-11-06 22:04:06,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2020-11-06 22:04:06,048 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 206 [2020-11-06 22:04:06,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:04:06,049 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2020-11-06 22:04:06,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-11-06 22:04:06,049 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2020-11-06 22:04:06,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-11-06 22:04:06,050 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:04:06,050 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:04:06,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:04:06,252 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:04:06,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:04:06,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1315162644, now seen corresponding path program 14 times [2020-11-06 22:04:06,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:04:06,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049405780] [2020-11-06 22:04:06,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:04:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:06,464 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 18 [2020-11-06 22:04:06,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:04:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:06,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:04:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:06,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:06,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:06,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:06,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:06,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:07,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:07,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:07,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:07,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:07,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:07,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:07,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:08,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:08,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:08,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:08,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:08,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:09,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:09,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:09,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:09,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:09,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:10,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:10,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:10,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:11,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:11,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:11,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:12,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2020-11-06 22:04:12,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049405780] [2020-11-06 22:04:12,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875575625] [2020-11-06 22:04:12,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-11-06 22:04:12,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:04:12,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:04:12,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 240 conjunts are in the unsatisfiable core [2020-11-06 22:04:12,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:04:13,009 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:04:13,012 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:04:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2020-11-06 22:04:13,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:04:13,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 68 [2020-11-06 22:04:13,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628470660] [2020-11-06 22:04:13,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-11-06 22:04:13,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:04:13,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-11-06 22:04:13,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=4416, Unknown=0, NotChecked=0, Total=4556 [2020-11-06 22:04:13,541 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand 68 states. [2020-11-06 22:04:27,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:04:27,513 INFO L93 Difference]: Finished difference Result 201 states and 203 transitions. [2020-11-06 22:04:27,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-11-06 22:04:27,517 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 213 [2020-11-06 22:04:27,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:04:27,518 INFO L225 Difference]: With dead ends: 201 [2020-11-06 22:04:27,518 INFO L226 Difference]: Without dead ends: 196 [2020-11-06 22:04:27,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 266 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2145 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=511, Invalid=16259, Unknown=0, NotChecked=0, Total=16770 [2020-11-06 22:04:27,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-11-06 22:04:27,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 113. [2020-11-06 22:04:27,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-06 22:04:27,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2020-11-06 22:04:27,526 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 213 [2020-11-06 22:04:27,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:04:27,527 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2020-11-06 22:04:27,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-11-06 22:04:27,527 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2020-11-06 22:04:27,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-11-06 22:04:27,528 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:04:27,528 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:04:27,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-11-06 22:04:27,743 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:04:27,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:04:27,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1987485084, now seen corresponding path program 14 times [2020-11-06 22:04:27,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:04:27,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869929099] [2020-11-06 22:04:27,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:04:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:27,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:04:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:27,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:04:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:28,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:28,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:28,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:28,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:28,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:28,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:28,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:28,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:29,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:29,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:29,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:29,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:29,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:29,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:30,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:30,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:30,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:30,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:30,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:31,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:31,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:31,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:31,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:32,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:32,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:32,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:32,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:33,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:33,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:34,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2020-11-06 22:04:34,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869929099] [2020-11-06 22:04:34,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691110877] [2020-11-06 22:04:34,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-11-06 22:04:34,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:04:34,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:04:34,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 248 conjunts are in the unsatisfiable core [2020-11-06 22:04:34,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:04:34,864 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:04:34,871 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:04:35,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1442 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2020-11-06 22:04:35,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:04:35,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66] total 70 [2020-11-06 22:04:35,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252056694] [2020-11-06 22:04:35,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-11-06 22:04:35,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:04:35,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-11-06 22:04:35,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=4687, Unknown=0, NotChecked=0, Total=4830 [2020-11-06 22:04:35,400 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 70 states. [2020-11-06 22:04:50,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:04:50,406 INFO L93 Difference]: Finished difference Result 207 states and 209 transitions. [2020-11-06 22:04:50,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-11-06 22:04:50,406 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 220 [2020-11-06 22:04:50,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:04:50,407 INFO L225 Difference]: With dead ends: 207 [2020-11-06 22:04:50,408 INFO L226 Difference]: Without dead ends: 202 [2020-11-06 22:04:50,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 276 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2271 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=526, Invalid=17296, Unknown=0, NotChecked=0, Total=17822 [2020-11-06 22:04:50,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-06 22:04:50,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 116. [2020-11-06 22:04:50,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-06 22:04:50,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 118 transitions. [2020-11-06 22:04:50,416 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 118 transitions. Word has length 220 [2020-11-06 22:04:50,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:04:50,416 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 118 transitions. [2020-11-06 22:04:50,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-11-06 22:04:50,416 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 118 transitions. [2020-11-06 22:04:50,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-11-06 22:04:50,418 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:04:50,418 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:04:50,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:04:50,634 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:04:50,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:04:50,634 INFO L82 PathProgramCache]: Analyzing trace with hash -76656523, now seen corresponding path program 15 times [2020-11-06 22:04:50,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:04:50,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922865743] [2020-11-06 22:04:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:04:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:50,865 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 18 [2020-11-06 22:04:50,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:04:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:50,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:04:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:51,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:51,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:51,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:51,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:51,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:51,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:51,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:51,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:51,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:52,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:52,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:52,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:52,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:52,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:53,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:53,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:53,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:53,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:53,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:54,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:54,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:54,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:54,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:55,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:55,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:55,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:56,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:56,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:56,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:56,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:04:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:04:57,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2020-11-06 22:04:57,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922865743] [2020-11-06 22:04:57,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462704266] [2020-11-06 22:04:57,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-11-06 22:04:57,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-11-06 22:04:57,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:04:57,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 256 conjunts are in the unsatisfiable core [2020-11-06 22:04:57,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:04:58,619 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:04:58,626 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:04:59,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2020-11-06 22:04:59,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:04:59,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 72 [2020-11-06 22:04:59,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738284066] [2020-11-06 22:04:59,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-11-06 22:04:59,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:04:59,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-11-06 22:04:59,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=4964, Unknown=0, NotChecked=0, Total=5112 [2020-11-06 22:04:59,183 INFO L87 Difference]: Start difference. First operand 116 states and 118 transitions. Second operand 72 states. [2020-11-06 22:05:15,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:05:15,152 INFO L93 Difference]: Finished difference Result 213 states and 215 transitions. [2020-11-06 22:05:15,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-11-06 22:05:15,154 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 227 [2020-11-06 22:05:15,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:05:15,156 INFO L225 Difference]: With dead ends: 213 [2020-11-06 22:05:15,156 INFO L226 Difference]: Without dead ends: 208 [2020-11-06 22:05:15,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 284 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2415 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=543, Invalid=18363, Unknown=0, NotChecked=0, Total=18906 [2020-11-06 22:05:15,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-11-06 22:05:15,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 119. [2020-11-06 22:05:15,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-06 22:05:15,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2020-11-06 22:05:15,164 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 227 [2020-11-06 22:05:15,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:05:15,164 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2020-11-06 22:05:15,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-11-06 22:05:15,165 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2020-11-06 22:05:15,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-11-06 22:05:15,166 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:05:15,166 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:05:15,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-11-06 22:05:15,379 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:05:15,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:05:15,380 INFO L82 PathProgramCache]: Analyzing trace with hash 2102078231, now seen corresponding path program 15 times [2020-11-06 22:05:15,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:05:15,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189264117] [2020-11-06 22:05:15,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:05:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:15,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:05:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:15,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:05:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:15,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:15,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:15,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:15,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:16,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:16,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:16,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:16,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:16,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:16,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:17,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:17,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:17,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:17,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:17,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:17,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:18,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:18,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:18,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:18,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:19,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:19,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:19,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:19,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:20,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:20,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:20,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:21,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:21,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:21,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:22,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:23,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 705 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2020-11-06 22:05:23,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189264117] [2020-11-06 22:05:23,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808988837] [2020-11-06 22:05:23,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-11-06 22:05:23,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-11-06 22:05:23,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:05:23,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 264 conjunts are in the unsatisfiable core [2020-11-06 22:05:23,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:05:23,529 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:05:23,536 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:05:24,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1650 backedges. 0 proven. 705 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2020-11-06 22:05:24,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:05:24,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 73 [2020-11-06 22:05:24,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898164594] [2020-11-06 22:05:24,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-11-06 22:05:24,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:05:24,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-11-06 22:05:24,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=5109, Unknown=0, NotChecked=0, Total=5256 [2020-11-06 22:05:24,106 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 73 states. [2020-11-06 22:05:41,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:05:41,421 INFO L93 Difference]: Finished difference Result 219 states and 221 transitions. [2020-11-06 22:05:41,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-11-06 22:05:41,421 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 234 [2020-11-06 22:05:41,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:05:41,424 INFO L225 Difference]: With dead ends: 219 [2020-11-06 22:05:41,424 INFO L226 Difference]: Without dead ends: 214 [2020-11-06 22:05:41,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 294 SyntacticMatches, 2 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2483 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=551, Invalid=19189, Unknown=0, NotChecked=0, Total=19740 [2020-11-06 22:05:41,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-11-06 22:05:41,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 122. [2020-11-06 22:05:41,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-06 22:05:41,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2020-11-06 22:05:41,432 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 234 [2020-11-06 22:05:41,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:05:41,432 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2020-11-06 22:05:41,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-11-06 22:05:41,433 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2020-11-06 22:05:41,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-11-06 22:05:41,434 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:05:41,434 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:05:41,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:05:41,648 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:05:41,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:05:41,648 INFO L82 PathProgramCache]: Analyzing trace with hash -538482218, now seen corresponding path program 16 times [2020-11-06 22:05:41,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:05:41,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086689395] [2020-11-06 22:05:41,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:05:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:41,891 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 18 [2020-11-06 22:05:41,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:05:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:41,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:05:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:42,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:42,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:42,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:42,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:42,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:42,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:42,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:43,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:43,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:43,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:43,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:43,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:43,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:44,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:44,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:44,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:44,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:44,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:45,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:45,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:45,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:45,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:46,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:46,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:46,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:47,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:47,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:47,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:48,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:48,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:48,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:49,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:05:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:05:50,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 0 proven. 752 refuted. 0 times theorem prover too weak. 1008 trivial. 0 not checked. [2020-11-06 22:05:50,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086689395] [2020-11-06 22:05:50,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737614778] [2020-11-06 22:05:50,319 INFO L93 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 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 [2020-11-06 22:05:50,440 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-06 22:05:50,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:05:50,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 272 conjunts are in the unsatisfiable core [2020-11-06 22:05:50,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:05:51,168 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:05:51,170 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:05:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 0 proven. 752 refuted. 0 times theorem prover too weak. 1008 trivial. 0 not checked. [2020-11-06 22:05:51,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:05:51,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72] total 76 [2020-11-06 22:05:51,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147367936] [2020-11-06 22:05:51,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-11-06 22:05:51,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:05:51,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-11-06 22:05:51,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=5544, Unknown=0, NotChecked=0, Total=5700 [2020-11-06 22:05:51,794 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand 76 states. [2020-11-06 22:06:10,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:06:10,091 INFO L93 Difference]: Finished difference Result 225 states and 227 transitions. [2020-11-06 22:06:10,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-11-06 22:06:10,092 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 241 [2020-11-06 22:06:10,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:06:10,094 INFO L225 Difference]: With dead ends: 225 [2020-11-06 22:06:10,094 INFO L226 Difference]: Without dead ends: 220 [2020-11-06 22:06:10,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 302 SyntacticMatches, 2 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2701 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=575, Invalid=20595, Unknown=0, NotChecked=0, Total=21170 [2020-11-06 22:06:10,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-11-06 22:06:10,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 125. [2020-11-06 22:06:10,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-06 22:06:10,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2020-11-06 22:06:10,102 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 241 [2020-11-06 22:06:10,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:06:10,103 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2020-11-06 22:06:10,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-11-06 22:06:10,103 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2020-11-06 22:06:10,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-11-06 22:06:10,104 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:06:10,104 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:06:10,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-11-06 22:06:10,318 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:06:10,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:06:10,318 INFO L82 PathProgramCache]: Analyzing trace with hash -488338998, now seen corresponding path program 16 times [2020-11-06 22:06:10,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:06:10,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244771149] [2020-11-06 22:06:10,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:06:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:10,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:06:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:10,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:06:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:10,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:10,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:10,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:10,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:11,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:11,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:11,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:11,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:11,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:11,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:11,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:12,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:12,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:12,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:12,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:13,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:13,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:13,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:13,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:13,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:14,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:14,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:14,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:15,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:15,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:15,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:16,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:16,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:16,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:16,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:17,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:17,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:18,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2020-11-06 22:06:19,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244771149] [2020-11-06 22:06:19,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350187966] [2020-11-06 22:06:19,219 INFO L93 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 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 [2020-11-06 22:06:19,346 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-06 22:06:19,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:06:19,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 280 conjunts are in the unsatisfiable core [2020-11-06 22:06:19,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:06:19,949 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:06:19,955 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:06:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2020-11-06 22:06:20,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:06:20,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 77 [2020-11-06 22:06:20,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922178512] [2020-11-06 22:06:20,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-11-06 22:06:20,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:06:20,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-11-06 22:06:20,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=5698, Unknown=0, NotChecked=0, Total=5852 [2020-11-06 22:06:20,558 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 77 states. [2020-11-06 22:06:40,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:06:40,408 INFO L93 Difference]: Finished difference Result 231 states and 233 transitions. [2020-11-06 22:06:40,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-11-06 22:06:40,408 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 248 [2020-11-06 22:06:40,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:06:40,410 INFO L225 Difference]: With dead ends: 231 [2020-11-06 22:06:40,410 INFO L226 Difference]: Without dead ends: 226 [2020-11-06 22:06:40,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 313 SyntacticMatches, 2 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2630 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=582, Invalid=21470, Unknown=0, NotChecked=0, Total=22052 [2020-11-06 22:06:40,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-11-06 22:06:40,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 128. [2020-11-06 22:06:40,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-06 22:06:40,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2020-11-06 22:06:40,419 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 248 [2020-11-06 22:06:40,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:06:40,419 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2020-11-06 22:06:40,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-11-06 22:06:40,419 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2020-11-06 22:06:40,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-11-06 22:06:40,421 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:06:40,421 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:06:40,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-11-06 22:06:40,635 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:06:40,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:06:40,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1214400055, now seen corresponding path program 17 times [2020-11-06 22:06:40,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:06:40,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932009678] [2020-11-06 22:06:40,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:06:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:40,895 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 18 [2020-11-06 22:06:40,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:06:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:40,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:06:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:41,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:41,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:41,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:41,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:41,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:41,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:41,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:42,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:42,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:42,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:42,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:42,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:42,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:43,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:43,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:43,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:43,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:44,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:44,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:44,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:44,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:45,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:45,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:45,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:46,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:46,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:46,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:47,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:47,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:47,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:48,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:48,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:48,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:49,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:06:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:06:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1989 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2020-11-06 22:06:50,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932009678] [2020-11-06 22:06:50,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981319405] [2020-11-06 22:06:50,550 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-11-06 22:06:50,687 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-11-06 22:06:50,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:06:50,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 288 conjunts are in the unsatisfiable core [2020-11-06 22:06:50,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:06:51,482 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:06:51,489 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:06:52,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1989 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2020-11-06 22:06:52,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:06:52,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76] total 80 [2020-11-06 22:06:52,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408783157] [2020-11-06 22:06:52,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-11-06 22:06:52,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:06:52,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-11-06 22:06:52,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=6156, Unknown=0, NotChecked=0, Total=6320 [2020-11-06 22:06:52,167 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand 80 states. [2020-11-06 22:07:13,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:07:13,752 INFO L93 Difference]: Finished difference Result 237 states and 239 transitions. [2020-11-06 22:07:13,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-11-06 22:07:13,761 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 255 [2020-11-06 22:07:13,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:07:13,763 INFO L225 Difference]: With dead ends: 237 [2020-11-06 22:07:13,763 INFO L226 Difference]: Without dead ends: 232 [2020-11-06 22:07:13,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 320 SyntacticMatches, 2 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3003 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=607, Invalid=22955, Unknown=0, NotChecked=0, Total=23562 [2020-11-06 22:07:13,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-11-06 22:07:13,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 131. [2020-11-06 22:07:13,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-11-06 22:07:13,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2020-11-06 22:07:13,773 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 255 [2020-11-06 22:07:13,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:07:13,773 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2020-11-06 22:07:13,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-11-06 22:07:13,774 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2020-11-06 22:07:13,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-11-06 22:07:13,775 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:07:13,775 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:07:13,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-11-06 22:07:13,988 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:07:13,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:07:13,989 INFO L82 PathProgramCache]: Analyzing trace with hash 734105213, now seen corresponding path program 17 times [2020-11-06 22:07:13,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:07:13,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913681171] [2020-11-06 22:07:13,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:07:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:14,272 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 9 [2020-11-06 22:07:14,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:07:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:14,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:07:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:14,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:14,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:14,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:14,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:14,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:15,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:15,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:15,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:15,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:15,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:16,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:16,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:16,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:16,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:17,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:17,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:17,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:17,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:18,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:18,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:18,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:19,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:19,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:19,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:20,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:20,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:20,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:21,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:21,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:21,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:22,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:22,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:22,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:23,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:23,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:25,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2108 backedges. 0 proven. 901 refuted. 0 times theorem prover too weak. 1207 trivial. 0 not checked. [2020-11-06 22:07:25,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913681171] [2020-11-06 22:07:25,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313140672] [2020-11-06 22:07:25,040 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-11-06 22:07:25,188 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-11-06 22:07:25,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:07:25,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 296 conjunts are in the unsatisfiable core [2020-11-06 22:07:25,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:07:25,895 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:07:25,903 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:07:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2108 backedges. 0 proven. 901 refuted. 0 times theorem prover too weak. 1207 trivial. 0 not checked. [2020-11-06 22:07:26,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:07:26,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 78] total 82 [2020-11-06 22:07:26,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495505517] [2020-11-06 22:07:26,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-11-06 22:07:26,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:07:26,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-11-06 22:07:26,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=6475, Unknown=0, NotChecked=0, Total=6642 [2020-11-06 22:07:26,692 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 82 states. [2020-11-06 22:07:50,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:07:50,146 INFO L93 Difference]: Finished difference Result 243 states and 245 transitions. [2020-11-06 22:07:50,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-11-06 22:07:50,146 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 262 [2020-11-06 22:07:50,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:07:50,148 INFO L225 Difference]: With dead ends: 243 [2020-11-06 22:07:50,148 INFO L226 Difference]: Without dead ends: 238 [2020-11-06 22:07:50,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 330 SyntacticMatches, 1 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3153 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=622, Invalid=24184, Unknown=0, NotChecked=0, Total=24806 [2020-11-06 22:07:50,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-11-06 22:07:50,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 134. [2020-11-06 22:07:50,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-06 22:07:50,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 136 transitions. [2020-11-06 22:07:50,156 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 136 transitions. Word has length 262 [2020-11-06 22:07:50,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:07:50,156 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 136 transitions. [2020-11-06 22:07:50,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-11-06 22:07:50,157 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 136 transitions. [2020-11-06 22:07:50,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-11-06 22:07:50,158 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:07:50,158 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:07:50,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-11-06 22:07:50,372 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:07:50,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:07:50,372 INFO L82 PathProgramCache]: Analyzing trace with hash -703982184, now seen corresponding path program 18 times [2020-11-06 22:07:50,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:07:50,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717358426] [2020-11-06 22:07:50,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:07:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:50,637 WARN L194 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 18 [2020-11-06 22:07:50,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:07:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:50,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:07:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:50,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:50,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:51,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:51,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:51,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:51,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:51,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:51,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:51,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:52,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:52,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:52,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:52,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:52,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:53,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:53,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:53,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:53,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:54,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:54,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:54,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:55,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:55,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:55,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:55,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:56,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:56,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:56,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:57,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:57,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:58,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:58,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:58,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:59,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:07:59,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:07:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:00,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:00,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2232 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 1278 trivial. 0 not checked. [2020-11-06 22:08:01,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717358426] [2020-11-06 22:08:01,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166858205] [2020-11-06 22:08:01,569 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-11-06 22:08:01,722 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-11-06 22:08:01,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:08:01,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 304 conjunts are in the unsatisfiable core [2020-11-06 22:08:01,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:08:02,598 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:08:02,601 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:08:03,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2232 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 1278 trivial. 0 not checked. [2020-11-06 22:08:03,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:08:03,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 84 [2020-11-06 22:08:03,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287209240] [2020-11-06 22:08:03,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-11-06 22:08:03,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:08:03,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-11-06 22:08:03,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=6800, Unknown=0, NotChecked=0, Total=6972 [2020-11-06 22:08:03,367 INFO L87 Difference]: Start difference. First operand 134 states and 136 transitions. Second operand 84 states. [2020-11-06 22:08:28,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:08:28,655 INFO L93 Difference]: Finished difference Result 249 states and 251 transitions. [2020-11-06 22:08:28,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-11-06 22:08:28,657 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 269 [2020-11-06 22:08:28,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:08:28,659 INFO L225 Difference]: With dead ends: 249 [2020-11-06 22:08:28,659 INFO L226 Difference]: Without dead ends: 244 [2020-11-06 22:08:28,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 338 SyntacticMatches, 2 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3321 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=639, Invalid=25443, Unknown=0, NotChecked=0, Total=26082 [2020-11-06 22:08:28,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-11-06 22:08:28,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 137. [2020-11-06 22:08:28,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-11-06 22:08:28,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2020-11-06 22:08:28,669 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 269 [2020-11-06 22:08:28,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:08:28,670 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2020-11-06 22:08:28,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-11-06 22:08:28,670 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2020-11-06 22:08:28,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-11-06 22:08:28,671 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:08:28,671 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:08:28,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-11-06 22:08:28,885 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:08:28,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:08:28,885 INFO L82 PathProgramCache]: Analyzing trace with hash -590984912, now seen corresponding path program 18 times [2020-11-06 22:08:28,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:08:28,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717718298] [2020-11-06 22:08:28,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:08:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:29,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:08:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:29,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:08:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:29,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:29,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:29,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:29,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:29,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:30,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:30,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:30,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:30,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:30,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:30,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:31,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:31,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:31,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:31,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:32,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:32,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:32,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:32,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:33,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:33,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:33,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:34,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:34,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:34,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:35,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:35,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:35,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:36,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:36,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:37,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:37,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:37,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:38,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:38,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:39,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:39,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:08:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:08:41,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2358 backedges. 0 proven. 1008 refuted. 0 times theorem prover too weak. 1350 trivial. 0 not checked. [2020-11-06 22:08:41,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717718298] [2020-11-06 22:08:41,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013137506] [2020-11-06 22:08:41,203 INFO L93 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 [2020-11-06 22:08:41,369 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-11-06 22:08:41,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:08:41,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 312 conjunts are in the unsatisfiable core [2020-11-06 22:08:41,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:08:42,120 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:08:42,122 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:08:42,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2358 backedges. 0 proven. 1008 refuted. 0 times theorem prover too weak. 1350 trivial. 0 not checked. [2020-11-06 22:08:42,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:08:42,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 86 [2020-11-06 22:08:42,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928755404] [2020-11-06 22:08:42,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-11-06 22:08:42,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:08:42,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-11-06 22:08:42,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=7135, Unknown=0, NotChecked=0, Total=7310 [2020-11-06 22:08:42,939 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand 86 states. [2020-11-06 22:09:10,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:09:10,859 INFO L93 Difference]: Finished difference Result 255 states and 257 transitions. [2020-11-06 22:09:10,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-11-06 22:09:10,860 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 276 [2020-11-06 22:09:10,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:09:10,862 INFO L225 Difference]: With dead ends: 255 [2020-11-06 22:09:10,862 INFO L226 Difference]: Without dead ends: 250 [2020-11-06 22:09:10,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 348 SyntacticMatches, 1 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3479 ImplicationChecksByTransitivity, 25.7s TimeCoverageRelationStatistics Valid=654, Invalid=26736, Unknown=0, NotChecked=0, Total=27390 [2020-11-06 22:09:10,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-11-06 22:09:10,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 140. [2020-11-06 22:09:10,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-11-06 22:09:10,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 142 transitions. [2020-11-06 22:09:10,870 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 142 transitions. Word has length 276 [2020-11-06 22:09:10,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:09:10,871 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 142 transitions. [2020-11-06 22:09:10,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-11-06 22:09:10,871 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 142 transitions. [2020-11-06 22:09:10,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-11-06 22:09:10,872 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:09:10,873 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:09:11,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2020-11-06 22:09:11,087 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:09:11,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:09:11,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1939998713, now seen corresponding path program 19 times [2020-11-06 22:09:11,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:09:11,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013748737] [2020-11-06 22:09:11,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:09:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:11,468 WARN L194 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 18 [2020-11-06 22:09:11,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:09:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:11,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:09:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:11,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:11,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:11,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:12,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:12,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:12,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:12,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:12,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:13,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:13,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:13,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:13,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:13,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:14,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:14,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:14,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:14,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:15,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:15,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:15,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:16,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:16,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:16,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:17,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:17,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:17,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:18,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:18,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:18,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:19,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:19,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:20,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:20,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:21,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:21,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:22,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:22,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:23,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2489 backedges. 0 proven. 1064 refuted. 0 times theorem prover too weak. 1425 trivial. 0 not checked. [2020-11-06 22:09:24,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013748737] [2020-11-06 22:09:24,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740216629] [2020-11-06 22:09:24,713 INFO L93 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 [2020-11-06 22:09:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:24,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 320 conjunts are in the unsatisfiable core [2020-11-06 22:09:24,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:09:25,906 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:09:25,912 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:09:26,663 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 20 [2020-11-06 22:09:26,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2489 backedges. 0 proven. 1064 refuted. 0 times theorem prover too weak. 1425 trivial. 0 not checked. [2020-11-06 22:09:26,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:09:26,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 84] total 88 [2020-11-06 22:09:26,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319608565] [2020-11-06 22:09:26,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-11-06 22:09:26,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:09:26,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-11-06 22:09:26,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=7476, Unknown=0, NotChecked=0, Total=7656 [2020-11-06 22:09:26,806 INFO L87 Difference]: Start difference. First operand 140 states and 142 transitions. Second operand 88 states. [2020-11-06 22:09:57,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:09:57,203 INFO L93 Difference]: Finished difference Result 261 states and 263 transitions. [2020-11-06 22:09:57,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-11-06 22:09:57,210 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 283 [2020-11-06 22:09:57,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:09:57,211 INFO L225 Difference]: With dead ends: 261 [2020-11-06 22:09:57,211 INFO L226 Difference]: Without dead ends: 256 [2020-11-06 22:09:57,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 356 SyntacticMatches, 2 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3655 ImplicationChecksByTransitivity, 28.3s TimeCoverageRelationStatistics Valid=671, Invalid=28059, Unknown=0, NotChecked=0, Total=28730 [2020-11-06 22:09:57,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-11-06 22:09:57,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 143. [2020-11-06 22:09:57,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-06 22:09:57,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2020-11-06 22:09:57,221 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 283 [2020-11-06 22:09:57,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:09:57,222 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2020-11-06 22:09:57,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-11-06 22:09:57,222 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2020-11-06 22:09:57,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-11-06 22:09:57,224 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:09:57,224 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:09:57,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-11-06 22:09:57,439 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:09:57,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:09:57,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1833880035, now seen corresponding path program 19 times [2020-11-06 22:09:57,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:09:57,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634356486] [2020-11-06 22:09:57,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:09:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:57,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:09:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:57,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:09:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:57,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:58,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:58,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:58,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:58,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:58,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:58,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:59,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:59,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:59,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:09:59,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:09:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:00,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:00,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:00,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:00,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:01,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:01,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:01,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:02,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:02,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:02,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:02,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:03,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:03,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:03,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:04,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:04,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:04,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:05,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:05,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:06,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:06,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:06,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:07,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:07,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:08,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:08,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:09,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:09,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:10,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 0 proven. 1121 refuted. 0 times theorem prover too weak. 1501 trivial. 0 not checked. [2020-11-06 22:10:12,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634356486] [2020-11-06 22:10:12,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536289270] [2020-11-06 22:10:12,297 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-11-06 22:10:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:12,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 328 conjunts are in the unsatisfiable core [2020-11-06 22:10:12,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:10:13,232 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:10:13,234 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:10:14,006 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 11 [2020-11-06 22:10:14,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2622 backedges. 0 proven. 1121 refuted. 0 times theorem prover too weak. 1501 trivial. 0 not checked. [2020-11-06 22:10:14,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:10:14,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 90 [2020-11-06 22:10:14,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699074359] [2020-11-06 22:10:14,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-11-06 22:10:14,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:10:14,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-11-06 22:10:14,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=7827, Unknown=0, NotChecked=0, Total=8010 [2020-11-06 22:10:14,119 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand 90 states. [2020-11-06 22:10:47,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:10:47,469 INFO L93 Difference]: Finished difference Result 267 states and 269 transitions. [2020-11-06 22:10:47,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-11-06 22:10:47,470 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 290 [2020-11-06 22:10:47,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:10:47,471 INFO L225 Difference]: With dead ends: 267 [2020-11-06 22:10:47,472 INFO L226 Difference]: Without dead ends: 262 [2020-11-06 22:10:47,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 366 SyntacticMatches, 1 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3821 ImplicationChecksByTransitivity, 30.4s TimeCoverageRelationStatistics Valid=686, Invalid=29416, Unknown=0, NotChecked=0, Total=30102 [2020-11-06 22:10:47,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-11-06 22:10:47,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 146. [2020-11-06 22:10:47,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-06 22:10:47,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions. [2020-11-06 22:10:47,481 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 290 [2020-11-06 22:10:47,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:10:47,481 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 148 transitions. [2020-11-06 22:10:47,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-11-06 22:10:47,481 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 148 transitions. [2020-11-06 22:10:47,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-11-06 22:10:47,483 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:10:47,483 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:10:47,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:10:47,699 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:10:47,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:10:47,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1250250074, now seen corresponding path program 20 times [2020-11-06 22:10:47,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:10:47,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122270004] [2020-11-06 22:10:47,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:10:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:48,020 WARN L194 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 18 [2020-11-06 22:10:48,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:10:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:48,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:10:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:48,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:48,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:48,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:48,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:48,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:49,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:49,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:49,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:49,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:49,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:50,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:50,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:50,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:50,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:51,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:51,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:51,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:51,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:52,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:52,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:52,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:53,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:53,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:53,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:54,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:54,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:55,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:55,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:55,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:56,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:56,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:57,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:57,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:58,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:58,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:59,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:10:59,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:10:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:00,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:00,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:01,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:03,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2760 backedges. 0 proven. 1180 refuted. 0 times theorem prover too weak. 1580 trivial. 0 not checked. [2020-11-06 22:11:03,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122270004] [2020-11-06 22:11:03,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312945510] [2020-11-06 22:11:03,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-11-06 22:11:03,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:11:03,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:11:03,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 336 conjunts are in the unsatisfiable core [2020-11-06 22:11:03,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:11:04,706 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:11:04,710 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:11:05,539 WARN L194 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 20 [2020-11-06 22:11:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2760 backedges. 0 proven. 1180 refuted. 0 times theorem prover too weak. 1580 trivial. 0 not checked. [2020-11-06 22:11:05,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:11:05,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88] total 92 [2020-11-06 22:11:05,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528233309] [2020-11-06 22:11:05,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 92 states [2020-11-06 22:11:05,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:11:05,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2020-11-06 22:11:05,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=8184, Unknown=0, NotChecked=0, Total=8372 [2020-11-06 22:11:05,661 INFO L87 Difference]: Start difference. First operand 146 states and 148 transitions. Second operand 92 states. [2020-11-06 22:11:41,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:11:41,871 INFO L93 Difference]: Finished difference Result 273 states and 275 transitions. [2020-11-06 22:11:41,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-11-06 22:11:41,873 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 297 [2020-11-06 22:11:41,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:11:41,875 INFO L225 Difference]: With dead ends: 273 [2020-11-06 22:11:41,875 INFO L226 Difference]: Without dead ends: 268 [2020-11-06 22:11:41,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 374 SyntacticMatches, 2 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4005 ImplicationChecksByTransitivity, 32.9s TimeCoverageRelationStatistics Valid=703, Invalid=30803, Unknown=0, NotChecked=0, Total=31506 [2020-11-06 22:11:41,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-11-06 22:11:41,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 149. [2020-11-06 22:11:41,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-11-06 22:11:41,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2020-11-06 22:11:41,884 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 297 [2020-11-06 22:11:41,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:11:41,885 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2020-11-06 22:11:41,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 92 states. [2020-11-06 22:11:41,885 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2020-11-06 22:11:41,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-11-06 22:11:41,886 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:11:41,887 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:11:42,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-11-06 22:11:42,100 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:11:42,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:11:42,100 INFO L82 PathProgramCache]: Analyzing trace with hash 640622742, now seen corresponding path program 20 times [2020-11-06 22:11:42,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:11:42,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185084804] [2020-11-06 22:11:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:11:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:42,299 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 13 [2020-11-06 22:11:42,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:11:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:42,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:11:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:42,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:42,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:42,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:43,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:43,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:43,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:43,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:43,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:44,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:44,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:44,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:44,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:44,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:45,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:45,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:45,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:46,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:46,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:46,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:47,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:47,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:47,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:48,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:48,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:48,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:49,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:49,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:50,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:50,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:51,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:51,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:51,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:52,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:53,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:53,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:54,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:54,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:55,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:55,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:56,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:57,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:11:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:11:59,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2900 backedges. 0 proven. 1240 refuted. 0 times theorem prover too weak. 1660 trivial. 0 not checked. [2020-11-06 22:11:59,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185084804] [2020-11-06 22:11:59,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685682811] [2020-11-06 22:11:59,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-11-06 22:11:59,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:11:59,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:11:59,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 344 conjunts are in the unsatisfiable core [2020-11-06 22:11:59,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:11:59,952 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:11:59,956 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:12:00,742 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 11 [2020-11-06 22:12:00,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2900 backedges. 0 proven. 1240 refuted. 0 times theorem prover too weak. 1660 trivial. 0 not checked. [2020-11-06 22:12:00,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:12:00,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 90] total 93 [2020-11-06 22:12:00,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333615821] [2020-11-06 22:12:00,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 93 states [2020-11-06 22:12:00,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:12:00,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2020-11-06 22:12:00,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=8369, Unknown=0, NotChecked=0, Total=8556 [2020-11-06 22:12:00,878 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand 93 states. [2020-11-06 22:12:40,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:12:40,903 INFO L93 Difference]: Finished difference Result 279 states and 281 transitions. [2020-11-06 22:12:40,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-11-06 22:12:40,903 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 304 [2020-11-06 22:12:40,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:12:40,905 INFO L225 Difference]: With dead ends: 279 [2020-11-06 22:12:40,906 INFO L226 Difference]: Without dead ends: 274 [2020-11-06 22:12:40,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 384 SyntacticMatches, 2 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4093 ImplicationChecksByTransitivity, 35.3s TimeCoverageRelationStatistics Valid=711, Invalid=31869, Unknown=0, NotChecked=0, Total=32580 [2020-11-06 22:12:40,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-11-06 22:12:40,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 152. [2020-11-06 22:12:40,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-06 22:12:40,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 154 transitions. [2020-11-06 22:12:40,914 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 154 transitions. Word has length 304 [2020-11-06 22:12:40,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:12:40,915 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 154 transitions. [2020-11-06 22:12:40,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 93 states. [2020-11-06 22:12:40,915 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 154 transitions. [2020-11-06 22:12:40,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-11-06 22:12:40,917 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:12:40,917 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:12:41,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:12:41,132 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:12:41,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:12:41,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1213786693, now seen corresponding path program 21 times [2020-11-06 22:12:41,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:12:41,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37540358] [2020-11-06 22:12:41,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:12:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:41,587 WARN L194 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 18 [2020-11-06 22:12:41,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:12:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:41,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:12:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:41,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:42,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:42,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:42,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:42,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:42,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:43,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:43,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:43,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:43,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:44,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:44,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:44,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:45,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:45,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:45,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:46,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:46,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:47,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:47,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:47,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:48,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:48,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:49,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:49,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:50,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:51,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:51,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:52,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:52,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:53,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:54,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:54,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:55,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:56,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:56,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:57,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:57,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:58,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:12:59,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:12:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:13:00,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:13:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:13:00,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-06 22:13:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:13:03,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 1302 refuted. 0 times theorem prover too weak. 1743 trivial. 0 not checked. [2020-11-06 22:13:03,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37540358] [2020-11-06 22:13:03,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190159843] [2020-11-06 22:13:03,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-11-06 22:13:03,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2020-11-06 22:13:03,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:13:03,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 352 conjunts are in the unsatisfiable core [2020-11-06 22:13:03,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:13:04,657 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:13:04,660 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-06 22:13:05,825 WARN L194 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 20 [2020-11-06 22:13:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 1302 refuted. 0 times theorem prover too weak. 1743 trivial. 0 not checked. [2020-11-06 22:13:05,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:13:05,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 96 [2020-11-06 22:13:05,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24520498] [2020-11-06 22:13:05,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 96 states [2020-11-06 22:13:05,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:13:05,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2020-11-06 22:13:05,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=8924, Unknown=0, NotChecked=0, Total=9120 [2020-11-06 22:13:05,987 INFO L87 Difference]: Start difference. First operand 152 states and 154 transitions. Second operand 96 states.