/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/cohencu.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:16:00,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:16:00,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:16:00,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:16:00,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:16:00,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:16:00,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:16:00,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:16:00,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:16:00,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:16:00,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:16:00,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:16:00,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:16:00,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:16:00,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:16:00,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:16:00,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:16:00,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:16:00,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:16:00,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:16:00,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:16:00,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:16:00,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:16:00,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:16:00,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:16:00,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 22:16:00,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 22:16:00,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 22:16:00,830 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 [2019-11-23 22:16:00,843 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:16:00,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:16:00,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:16:00,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:16:00,845 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:16:00,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:16:00,846 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:16:00,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:16:00,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:16:00,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:16:00,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:16:00,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:16:00,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:16:00,847 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:16:00,847 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:16:00,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:16:00,847 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:16:00,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:16:00,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:16:00,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:16:00,848 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:16:00,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:16:00,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:16:00,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:16:00,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:16:00,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:16:00,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:16:00,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:16:00,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:16:00,850 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:16:01,104 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:16:01,122 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:16:01,126 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:16:01,127 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:16:01,127 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:16:01,128 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/cohencu.c [2019-11-23 22:16:01,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74ac45d95/d027f25db142426592401feefe4f62e1/FLAGd0c4e5cda [2019-11-23 22:16:01,678 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:16:01,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/cohencu.c [2019-11-23 22:16:01,695 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74ac45d95/d027f25db142426592401feefe4f62e1/FLAGd0c4e5cda [2019-11-23 22:16:02,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74ac45d95/d027f25db142426592401feefe4f62e1 [2019-11-23 22:16:02,057 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:16:02,059 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:16:02,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:16:02,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:16:02,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:16:02,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:16:02" (1/1) ... [2019-11-23 22:16:02,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c72d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:02, skipping insertion in model container [2019-11-23 22:16:02,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:16:02" (1/1) ... [2019-11-23 22:16:02,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:16:02,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:16:02,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:16:02,314 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:16:02,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:16:02,349 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:16:02,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:02 WrapperNode [2019-11-23 22:16:02,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:16:02,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:16:02,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:16:02,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:16:02,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:02" (1/1) ... [2019-11-23 22:16:02,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:02" (1/1) ... [2019-11-23 22:16:02,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:16:02,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:16:02,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:16:02,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:16:02,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:02" (1/1) ... [2019-11-23 22:16:02,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:02" (1/1) ... [2019-11-23 22:16:02,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:02" (1/1) ... [2019-11-23 22:16:02,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:02" (1/1) ... [2019-11-23 22:16:02,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:02" (1/1) ... [2019-11-23 22:16:02,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:02" (1/1) ... [2019-11-23 22:16:02,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:02" (1/1) ... [2019-11-23 22:16:02,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:16:02,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:16:02,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:16:02,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:16:02,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:02" (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 [2019-11-23 22:16:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:16:02,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:16:02,902 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:16:02,902 INFO L284 CfgBuilder]: Removed 27 assume(true) statements. [2019-11-23 22:16:02,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:16:02 BoogieIcfgContainer [2019-11-23 22:16:02,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:16:02,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:16:02,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:16:02,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:16:02,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:16:02" (1/3) ... [2019-11-23 22:16:02,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8415fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:16:02, skipping insertion in model container [2019-11-23 22:16:02,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:16:02" (2/3) ... [2019-11-23 22:16:02,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8415fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:16:02, skipping insertion in model container [2019-11-23 22:16:02,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:16:02" (3/3) ... [2019-11-23 22:16:02,913 INFO L109 eAbstractionObserver]: Analyzing ICFG cohencu.c [2019-11-23 22:16:02,920 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:16:02,926 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2019-11-23 22:16:02,937 INFO L249 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2019-11-23 22:16:02,959 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:16:02,959 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:16:02,959 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:16:02,959 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:16:02,959 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:16:02,960 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:16:02,960 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:16:02,960 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:16:02,977 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2019-11-23 22:16:02,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-23 22:16:02,982 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:02,983 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-23 22:16:02,983 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:02,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:02,989 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-23 22:16:02,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:02,997 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082533582] [2019-11-23 22:16:02,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:16:03,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:03,192 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082533582] [2019-11-23 22:16:03,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:16:03,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:16:03,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476179040] [2019-11-23 22:16:03,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:16:03,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:03,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:16:03,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:16:03,212 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 4 states. [2019-11-23 22:16:03,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:03,414 INFO L93 Difference]: Finished difference Result 96 states and 124 transitions. [2019-11-23 22:16:03,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:16:03,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-23 22:16:03,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:03,428 INFO L225 Difference]: With dead ends: 96 [2019-11-23 22:16:03,429 INFO L226 Difference]: Without dead ends: 43 [2019-11-23 22:16:03,433 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:16:03,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-23 22:16:03,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2019-11-23 22:16:03,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-23 22:16:03,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2019-11-23 22:16:03,471 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 4 [2019-11-23 22:16:03,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:03,471 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2019-11-23 22:16:03,471 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:16:03,472 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2019-11-23 22:16:03,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 22:16:03,472 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:03,472 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 22:16:03,473 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:03,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:03,476 INFO L82 PathProgramCache]: Analyzing trace with hash 925925231, now seen corresponding path program 1 times [2019-11-23 22:16:03,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:03,478 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862619735] [2019-11-23 22:16:03,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:03,492 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:03,492 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [481171778] [2019-11-23 22:16:03,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:16:03,540 WARN L253 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-23 22:16:03,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:03,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:03,637 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862619735] [2019-11-23 22:16:03,640 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:03,640 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481171778] [2019-11-23 22:16:03,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:16:03,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-23 22:16:03,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306059508] [2019-11-23 22:16:03,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:16:03,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:03,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:16:03,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:16:03,644 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 6 states. [2019-11-23 22:16:03,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:03,869 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2019-11-23 22:16:03,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:16:03,869 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-23 22:16:03,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:03,871 INFO L225 Difference]: With dead ends: 84 [2019-11-23 22:16:03,871 INFO L226 Difference]: Without dead ends: 76 [2019-11-23 22:16:03,872 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:16:03,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-11-23 22:16:03,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 63. [2019-11-23 22:16:03,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-23 22:16:03,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2019-11-23 22:16:03,888 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 6 [2019-11-23 22:16:03,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:03,889 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2019-11-23 22:16:03,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:16:03,889 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2019-11-23 22:16:03,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 22:16:03,890 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:03,890 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:16:04,101 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:04,104 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:04,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:04,105 INFO L82 PathProgramCache]: Analyzing trace with hash 756072562, now seen corresponding path program 1 times [2019-11-23 22:16:04,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:04,106 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125439677] [2019-11-23 22:16:04,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:04,113 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:04,114 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [542785340] [2019-11-23 22:16:04,114 INFO L94 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 [2019-11-23 22:16:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:16:04,152 WARN L253 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-23 22:16:04,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:04,218 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125439677] [2019-11-23 22:16:04,218 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:04,218 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542785340] [2019-11-23 22:16:04,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:16:04,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-23 22:16:04,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433292226] [2019-11-23 22:16:04,219 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:16:04,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:04,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:16:04,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:16:04,223 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 6 states. [2019-11-23 22:16:04,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:04,358 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2019-11-23 22:16:04,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:16:04,359 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-23 22:16:04,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:04,360 INFO L225 Difference]: With dead ends: 75 [2019-11-23 22:16:04,360 INFO L226 Difference]: Without dead ends: 71 [2019-11-23 22:16:04,361 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:16:04,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-11-23 22:16:04,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2019-11-23 22:16:04,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-23 22:16:04,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2019-11-23 22:16:04,374 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 8 [2019-11-23 22:16:04,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:04,374 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2019-11-23 22:16:04,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:16:04,375 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2019-11-23 22:16:04,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-23 22:16:04,375 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:04,375 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:16:04,578 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:04,578 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:04,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:04,579 INFO L82 PathProgramCache]: Analyzing trace with hash 736415253, now seen corresponding path program 1 times [2019-11-23 22:16:04,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:04,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562698108] [2019-11-23 22:16:04,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:04,593 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:04,593 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811240251] [2019-11-23 22:16:04,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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) [2019-11-23 22:16:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:16:04,627 WARN L253 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-23 22:16:04,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:04,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:04,689 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562698108] [2019-11-23 22:16:04,689 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:04,689 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811240251] [2019-11-23 22:16:04,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:16:04,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-23 22:16:04,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548604080] [2019-11-23 22:16:04,690 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:16:04,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:04,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:16:04,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:16:04,691 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand 6 states. [2019-11-23 22:16:04,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:04,860 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2019-11-23 22:16:04,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:16:04,860 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-23 22:16:04,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:04,861 INFO L225 Difference]: With dead ends: 72 [2019-11-23 22:16:04,861 INFO L226 Difference]: Without dead ends: 54 [2019-11-23 22:16:04,862 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:16:04,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-23 22:16:04,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2019-11-23 22:16:04,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-23 22:16:04,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2019-11-23 22:16:04,870 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 10 [2019-11-23 22:16:04,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:04,870 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2019-11-23 22:16:04,870 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:16:04,871 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2019-11-23 22:16:04,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-23 22:16:04,871 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:04,871 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:16:05,072 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:05,073 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:05,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:05,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1109163854, now seen corresponding path program 1 times [2019-11-23 22:16:05,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:05,074 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073268490] [2019-11-23 22:16:05,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:05,081 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:05,082 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [506082749] [2019-11-23 22:16:05,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-23 22:16:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:16:05,112 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-23 22:16:05,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:05,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:05,182 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073268490] [2019-11-23 22:16:05,182 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:05,182 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506082749] [2019-11-23 22:16:05,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:16:05,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-23 22:16:05,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626440490] [2019-11-23 22:16:05,183 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:16:05,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:05,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:16:05,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:16:05,184 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 6 states. [2019-11-23 22:16:05,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:05,318 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2019-11-23 22:16:05,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 22:16:05,319 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-11-23 22:16:05,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:05,320 INFO L225 Difference]: With dead ends: 94 [2019-11-23 22:16:05,320 INFO L226 Difference]: Without dead ends: 92 [2019-11-23 22:16:05,321 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:16:05,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-11-23 22:16:05,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 57. [2019-11-23 22:16:05,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-11-23 22:16:05,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2019-11-23 22:16:05,331 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 17 [2019-11-23 22:16:05,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:05,331 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2019-11-23 22:16:05,331 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:16:05,331 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2019-11-23 22:16:05,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-23 22:16:05,332 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:05,332 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:16:05,541 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:05,542 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:05,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:05,543 INFO L82 PathProgramCache]: Analyzing trace with hash -754418443, now seen corresponding path program 1 times [2019-11-23 22:16:05,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:05,544 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369421988] [2019-11-23 22:16:05,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:05,550 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:05,550 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49109373] [2019-11-23 22:16:05,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-23 22:16:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:16:05,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-23 22:16:05,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:05,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:05,683 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369421988] [2019-11-23 22:16:05,683 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:05,683 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49109373] [2019-11-23 22:16:05,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:16:05,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-23 22:16:05,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280548882] [2019-11-23 22:16:05,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-23 22:16:05,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:05,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-23 22:16:05,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:16:05,685 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 7 states. [2019-11-23 22:16:05,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:05,915 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2019-11-23 22:16:05,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 22:16:05,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-11-23 22:16:05,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:05,917 INFO L225 Difference]: With dead ends: 92 [2019-11-23 22:16:05,917 INFO L226 Difference]: Without dead ends: 90 [2019-11-23 22:16:05,917 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:16:05,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-11-23 22:16:05,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 59. [2019-11-23 22:16:05,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-23 22:16:05,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2019-11-23 22:16:05,926 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 19 [2019-11-23 22:16:05,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:05,926 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2019-11-23 22:16:05,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-23 22:16:05,927 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2019-11-23 22:16:05,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-23 22:16:05,927 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:05,927 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:16:06,139 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:06,140 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:06,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:06,140 INFO L82 PathProgramCache]: Analyzing trace with hash 853505496, now seen corresponding path program 1 times [2019-11-23 22:16:06,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:06,141 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567757023] [2019-11-23 22:16:06,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:06,147 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:06,147 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252931812] [2019-11-23 22:16:06,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-23 22:16:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:16:06,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-23 22:16:06,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:06,278 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567757023] [2019-11-23 22:16:06,278 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:06,279 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252931812] [2019-11-23 22:16:06,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:16:06,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-23 22:16:06,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618351132] [2019-11-23 22:16:06,280 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-23 22:16:06,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:06,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-23 22:16:06,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:16:06,280 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 7 states. [2019-11-23 22:16:06,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:06,456 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2019-11-23 22:16:06,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-23 22:16:06,456 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2019-11-23 22:16:06,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:06,457 INFO L225 Difference]: With dead ends: 91 [2019-11-23 22:16:06,458 INFO L226 Difference]: Without dead ends: 75 [2019-11-23 22:16:06,458 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:16:06,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-11-23 22:16:06,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2019-11-23 22:16:06,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-11-23 22:16:06,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2019-11-23 22:16:06,468 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 21 [2019-11-23 22:16:06,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:06,468 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2019-11-23 22:16:06,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-23 22:16:06,469 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2019-11-23 22:16:06,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-23 22:16:06,469 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:06,470 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:16:06,673 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:06,673 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:06,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:06,674 INFO L82 PathProgramCache]: Analyzing trace with hash -828385584, now seen corresponding path program 1 times [2019-11-23 22:16:06,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:06,675 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842021985] [2019-11-23 22:16:06,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:06,682 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:06,682 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375547445] [2019-11-23 22:16:06,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:16:06,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-23 22:16:06,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:06,812 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:16:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:06,832 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842021985] [2019-11-23 22:16:06,832 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:06,832 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375547445] [2019-11-23 22:16:06,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:16:06,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-23 22:16:06,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156367084] [2019-11-23 22:16:06,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-23 22:16:06,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:06,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-23 22:16:06,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:16:06,834 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 7 states. [2019-11-23 22:16:06,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:06,984 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2019-11-23 22:16:06,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-23 22:16:06,984 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2019-11-23 22:16:06,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:06,985 INFO L225 Difference]: With dead ends: 74 [2019-11-23 22:16:06,985 INFO L226 Difference]: Without dead ends: 72 [2019-11-23 22:16:06,986 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:16:06,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-11-23 22:16:06,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2019-11-23 22:16:06,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-11-23 22:16:06,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2019-11-23 22:16:06,994 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 28 [2019-11-23 22:16:06,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:06,995 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2019-11-23 22:16:06,995 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-23 22:16:06,995 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2019-11-23 22:16:06,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-23 22:16:06,996 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:06,996 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2019-11-23 22:16:07,208 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:07,209 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:07,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:07,210 INFO L82 PathProgramCache]: Analyzing trace with hash -831248497, now seen corresponding path program 2 times [2019-11-23 22:16:07,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:07,211 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697071199] [2019-11-23 22:16:07,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:07,222 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:07,222 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [492450988] [2019-11-23 22:16:07,223 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:07,274 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:16:07,276 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:16:07,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-23 22:16:07,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:07,370 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697071199] [2019-11-23 22:16:07,370 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:07,370 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492450988] [2019-11-23 22:16:07,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:16:07,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-23 22:16:07,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378141304] [2019-11-23 22:16:07,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-23 22:16:07,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:07,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-23 22:16:07,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:16:07,371 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 8 states. [2019-11-23 22:16:07,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:07,617 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2019-11-23 22:16:07,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-23 22:16:07,618 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2019-11-23 22:16:07,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:07,619 INFO L225 Difference]: With dead ends: 114 [2019-11-23 22:16:07,619 INFO L226 Difference]: Without dead ends: 108 [2019-11-23 22:16:07,619 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-11-23 22:16:07,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2019-11-23 22:16:07,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 91. [2019-11-23 22:16:07,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-11-23 22:16:07,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2019-11-23 22:16:07,631 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 28 [2019-11-23 22:16:07,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:07,631 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2019-11-23 22:16:07,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-23 22:16:07,631 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2019-11-23 22:16:07,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-23 22:16:07,632 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:07,632 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:16:07,837 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:07,837 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:07,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:07,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1509438605, now seen corresponding path program 1 times [2019-11-23 22:16:07,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:07,838 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950944580] [2019-11-23 22:16:07,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:07,849 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:07,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1560879239] [2019-11-23 22:16:07,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-23 22:16:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:16:07,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-23 22:16:07,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:07,987 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:16:07,998 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:07,998 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950944580] [2019-11-23 22:16:07,998 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:07,999 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560879239] [2019-11-23 22:16:07,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:16:07,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-23 22:16:07,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395380597] [2019-11-23 22:16:08,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-23 22:16:08,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:08,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-23 22:16:08,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:16:08,001 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand 7 states. [2019-11-23 22:16:08,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:08,707 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2019-11-23 22:16:08,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-23 22:16:08,708 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2019-11-23 22:16:08,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:08,709 INFO L225 Difference]: With dead ends: 93 [2019-11-23 22:16:08,709 INFO L226 Difference]: Without dead ends: 85 [2019-11-23 22:16:08,709 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:16:08,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-11-23 22:16:08,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2019-11-23 22:16:08,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-11-23 22:16:08,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2019-11-23 22:16:08,718 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 30 [2019-11-23 22:16:08,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:08,718 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2019-11-23 22:16:08,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-23 22:16:08,718 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2019-11-23 22:16:08,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-23 22:16:08,719 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:08,719 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2019-11-23 22:16:08,935 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:08,936 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:08,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:08,936 INFO L82 PathProgramCache]: Analyzing trace with hash 34267282, now seen corresponding path program 2 times [2019-11-23 22:16:08,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:08,937 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282833127] [2019-11-23 22:16:08,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:08,942 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:08,942 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2065876819] [2019-11-23 22:16:08,942 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2019-11-23 22:16:08,976 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:16:08,976 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:16:08,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-23 22:16:08,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:09,064 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:16:09,064 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282833127] [2019-11-23 22:16:09,064 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:09,065 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065876819] [2019-11-23 22:16:09,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:16:09,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-23 22:16:09,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676119483] [2019-11-23 22:16:09,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-23 22:16:09,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:09,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-23 22:16:09,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:16:09,067 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand 8 states. [2019-11-23 22:16:09,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:09,305 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2019-11-23 22:16:09,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-23 22:16:09,305 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2019-11-23 22:16:09,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:09,306 INFO L225 Difference]: With dead ends: 99 [2019-11-23 22:16:09,306 INFO L226 Difference]: Without dead ends: 97 [2019-11-23 22:16:09,307 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-11-23 22:16:09,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2019-11-23 22:16:09,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 85. [2019-11-23 22:16:09,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-11-23 22:16:09,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2019-11-23 22:16:09,314 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 30 [2019-11-23 22:16:09,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:09,315 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2019-11-23 22:16:09,315 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-23 22:16:09,315 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2019-11-23 22:16:09,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-23 22:16:09,316 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:09,316 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1] [2019-11-23 22:16:09,519 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:09,520 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:09,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:09,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1428724171, now seen corresponding path program 2 times [2019-11-23 22:16:09,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:09,521 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109855098] [2019-11-23 22:16:09,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:09,531 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:09,532 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805650454] [2019-11-23 22:16:09,532 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2019-11-23 22:16:09,552 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-23 22:16:09,552 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:16:09,553 WARN L253 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-23 22:16:09,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:16:09,585 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:16:09,623 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:16:09,673 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:16:12,063 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:16:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-23 22:16:12,084 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109855098] [2019-11-23 22:16:12,084 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:16:12,085 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805650454] [2019-11-23 22:16:12,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:16:12,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-23 22:16:12,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247921427] [2019-11-23 22:16:12,086 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-23 22:16:12,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:16:12,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-23 22:16:12,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=54, Unknown=1, NotChecked=0, Total=72 [2019-11-23 22:16:12,086 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand 9 states. [2019-11-23 22:16:20,151 WARN L192 SmtUtils]: Spent 8.05 s on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2019-11-23 22:16:30,253 WARN L192 SmtUtils]: Spent 10.09 s on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2019-11-23 22:16:41,832 WARN L192 SmtUtils]: Spent 8.08 s on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2019-11-23 22:16:49,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:16:49,664 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2019-11-23 22:16:49,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-23 22:16:49,665 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2019-11-23 22:16:49,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:16:49,666 INFO L225 Difference]: With dead ends: 85 [2019-11-23 22:16:49,666 INFO L226 Difference]: Without dead ends: 83 [2019-11-23 22:16:49,667 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 29.5s TimeCoverageRelationStatistics Valid=53, Invalid=128, Unknown=1, NotChecked=0, Total=182 [2019-11-23 22:16:49,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-11-23 22:16:49,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2019-11-23 22:16:49,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-11-23 22:16:49,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2019-11-23 22:16:49,676 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 32 [2019-11-23 22:16:49,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:16:49,676 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2019-11-23 22:16:49,676 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-23 22:16:49,676 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2019-11-23 22:16:49,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-23 22:16:49,678 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:16:49,678 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:16:49,880 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:16:49,881 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:16:49,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:16:49,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1717095469, now seen corresponding path program 2 times [2019-11-23 22:16:49,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:16:49,882 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803899973] [2019-11-23 22:16:49,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:16:49,888 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:16:49,889 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [458334062] [2019-11-23 22:16:49,889 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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