/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:12:23,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:12:23,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:12:23,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 05:12:23,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:12:23,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:12:23,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:12:23,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:12:23,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:12:23,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:12:23,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:12:23,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:12:23,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:12:23,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:12:23,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:12:23,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:12:23,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:12:23,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:12:23,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:12:23,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:12:23,291 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:12:23,351 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:12:23,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:12:23,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:12:23,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:12:23,357 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:12:23,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:12:23,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:12:23,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:12:23,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:12:23,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:12:23,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:12:23,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:12:23,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:12:23,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:12:23,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:12:23,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:12:23,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:12:23,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:12:23,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:12:23,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:12:23,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:12:23,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:12:23,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:12:23,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:12:23,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:12:23,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:12:23,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:12:23,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:12:23,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:12:23,845 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:12:23,845 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:12:23,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c [2020-12-22 05:12:23,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7ffb7216/88adbe2b8f8b47c8abf08029cc451331/FLAGa6ccaf2d1 [2020-12-22 05:12:24,566 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:12:24,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c [2020-12-22 05:12:24,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7ffb7216/88adbe2b8f8b47c8abf08029cc451331/FLAGa6ccaf2d1 [2020-12-22 05:12:24,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7ffb7216/88adbe2b8f8b47c8abf08029cc451331 [2020-12-22 05:12:24,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:12:24,921 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:12:24,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:12:24,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:12:24,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:12:24,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:12:24" (1/1) ... [2020-12-22 05:12:24,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e71b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:24, skipping insertion in model container [2020-12-22 05:12:24,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:12:24" (1/1) ... [2020-12-22 05:12:24,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:12:24,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:12:25,117 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c[489,502] [2020-12-22 05:12:25,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:12:25,148 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:12:25,163 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c[489,502] [2020-12-22 05:12:25,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:12:25,192 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:12:25,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:25 WrapperNode [2020-12-22 05:12:25,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:12:25,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:12:25,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:12:25,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:12:25,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:25" (1/1) ... [2020-12-22 05:12:25,229 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:25" (1/1) ... [2020-12-22 05:12:25,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:12:25,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:12:25,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:12:25,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:12:25,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:25" (1/1) ... [2020-12-22 05:12:25,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:25" (1/1) ... [2020-12-22 05:12:25,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:25" (1/1) ... [2020-12-22 05:12:25,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:25" (1/1) ... [2020-12-22 05:12:25,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:25" (1/1) ... [2020-12-22 05:12:25,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:25" (1/1) ... [2020-12-22 05:12:25,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:25" (1/1) ... [2020-12-22 05:12:25,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:12:25,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:12:25,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:12:25,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:12:25,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:12:25,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:12:25,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:12:25,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:12:25,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:12:26,079 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:12:26,080 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2020-12-22 05:12:26,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:12:26 BoogieIcfgContainer [2020-12-22 05:12:26,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:12:26,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:12:26,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:12:26,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:12:26,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:12:24" (1/3) ... [2020-12-22 05:12:26,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731f5131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:12:26, skipping insertion in model container [2020-12-22 05:12:26,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:25" (2/3) ... [2020-12-22 05:12:26,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731f5131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:12:26, skipping insertion in model container [2020-12-22 05:12:26,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:12:26" (3/3) ... [2020-12-22 05:12:26,097 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound5.c [2020-12-22 05:12:26,105 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:12:26,110 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 05:12:26,134 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 05:12:26,180 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:12:26,180 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:12:26,181 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:12:26,181 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:12:26,181 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:12:26,181 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:12:26,181 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:12:26,182 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:12:26,205 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-12-22 05:12:26,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:12:26,212 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:26,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:26,213 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:26,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:26,222 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2020-12-22 05:12:26,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:26,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014712795] [2020-12-22 05:12:26,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:26,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014712795] [2020-12-22 05:12:26,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:12:26,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:12:26,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294016529] [2020-12-22 05:12:26,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:12:26,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:26,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:12:26,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:12:26,514 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2020-12-22 05:12:26,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:26,543 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2020-12-22 05:12:26,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:12:26,545 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-22 05:12:26,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:26,567 INFO L225 Difference]: With dead ends: 85 [2020-12-22 05:12:26,567 INFO L226 Difference]: Without dead ends: 40 [2020-12-22 05:12:26,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:12:26,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-22 05:12:26,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-12-22 05:12:26,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-22 05:12:26,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-12-22 05:12:26,631 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 13 [2020-12-22 05:12:26,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:26,632 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-12-22 05:12:26,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:12:26,632 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-12-22 05:12:26,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:12:26,633 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:26,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:26,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:12:26,637 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:26,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:26,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2020-12-22 05:12:26,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:26,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847442774] [2020-12-22 05:12:26,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:26,695 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:26,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1859409475] [2020-12-22 05:12:26,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:26,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:12:26,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:26,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847442774] [2020-12-22 05:12:26,970 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:26,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859409475] [2020-12-22 05:12:26,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:12:26,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:12:26,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128827564] [2020-12-22 05:12:26,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:12:26,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:26,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:12:26,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:12:26,988 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 5 states. [2020-12-22 05:12:27,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:27,191 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-12-22 05:12:27,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:12:27,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 05:12:27,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:27,193 INFO L225 Difference]: With dead ends: 70 [2020-12-22 05:12:27,193 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 05:12:27,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:12:27,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 05:12:27,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-12-22 05:12:27,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-22 05:12:27,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2020-12-22 05:12:27,206 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 13 [2020-12-22 05:12:27,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:27,208 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2020-12-22 05:12:27,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:12:27,208 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2020-12-22 05:12:27,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:12:27,209 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:27,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:27,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:12:27,423 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:27,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:27,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1454243009, now seen corresponding path program 1 times [2020-12-22 05:12:27,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:27,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502850982] [2020-12-22 05:12:27,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:27,443 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:27,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709786653] [2020-12-22 05:12:27,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:27,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-22 05:12:27,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:27,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:27,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502850982] [2020-12-22 05:12:27,832 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:27,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709786653] [2020-12-22 05:12:27,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:12:27,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 05:12:27,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516504590] [2020-12-22 05:12:27,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:12:27,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:27,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:12:27,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:12:27,835 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand 12 states. [2020-12-22 05:12:28,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:28,365 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2020-12-22 05:12:28,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:12:28,366 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-12-22 05:12:28,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:28,369 INFO L225 Difference]: With dead ends: 98 [2020-12-22 05:12:28,369 INFO L226 Difference]: Without dead ends: 96 [2020-12-22 05:12:28,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:12:28,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-22 05:12:28,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 70. [2020-12-22 05:12:28,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-22 05:12:28,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2020-12-22 05:12:28,383 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 15 [2020-12-22 05:12:28,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:28,384 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2020-12-22 05:12:28,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:12:28,384 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2020-12-22 05:12:28,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 05:12:28,385 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:28,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:28,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:28,599 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:28,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:28,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1663317220, now seen corresponding path program 1 times [2020-12-22 05:12:28,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:28,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813040256] [2020-12-22 05:12:28,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:28,617 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:28,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120332669] [2020-12-22 05:12:28,618 INFO L95 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:28,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:12:28,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:28,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:28,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813040256] [2020-12-22 05:12:28,814 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:28,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120332669] [2020-12-22 05:12:28,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:12:28,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 05:12:28,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996863144] [2020-12-22 05:12:28,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:12:28,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:28,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:12:28,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:12:28,817 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand 8 states. [2020-12-22 05:12:29,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:29,054 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-12-22 05:12:29,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:12:29,055 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-12-22 05:12:29,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:29,056 INFO L225 Difference]: With dead ends: 84 [2020-12-22 05:12:29,056 INFO L226 Difference]: Without dead ends: 76 [2020-12-22 05:12:29,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:12:29,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-22 05:12:29,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2020-12-22 05:12:29,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-22 05:12:29,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2020-12-22 05:12:29,068 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 17 [2020-12-22 05:12:29,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:29,068 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2020-12-22 05:12:29,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:12:29,069 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2020-12-22 05:12:29,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 05:12:29,069 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:29,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:29,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:29,285 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:29,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:29,286 INFO L82 PathProgramCache]: Analyzing trace with hash 850548497, now seen corresponding path program 1 times [2020-12-22 05:12:29,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:29,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951271541] [2020-12-22 05:12:29,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:29,309 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:29,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972525987] [2020-12-22 05:12:29,309 INFO L95 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 [2020-12-22 05:12:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:29,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 05:12:29,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:29,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:29,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951271541] [2020-12-22 05:12:29,388 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:29,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972525987] [2020-12-22 05:12:29,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:12:29,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:12:29,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866232990] [2020-12-22 05:12:29,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:12:29,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:29,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:12:29,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:12:29,390 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand 4 states. [2020-12-22 05:12:29,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:29,443 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2020-12-22 05:12:29,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:12:29,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-22 05:12:29,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:29,444 INFO L225 Difference]: With dead ends: 68 [2020-12-22 05:12:29,444 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 05:12:29,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:12:29,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 05:12:29,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-22 05:12:29,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 05:12:29,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2020-12-22 05:12:29,454 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 20 [2020-12-22 05:12:29,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:29,455 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2020-12-22 05:12:29,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:12:29,455 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2020-12-22 05:12:29,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 05:12:29,456 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:29,456 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:29,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:29,670 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:29,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:29,670 INFO L82 PathProgramCache]: Analyzing trace with hash 598848193, now seen corresponding path program 1 times [2020-12-22 05:12:29,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:29,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406538854] [2020-12-22 05:12:29,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:29,685 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:29,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400258874] [2020-12-22 05:12:29,686 INFO L95 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 [2020-12-22 05:12:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:29,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:12:29,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:29,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 05:12:29,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406538854] [2020-12-22 05:12:29,800 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:29,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400258874] [2020-12-22 05:12:29,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:29,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:12:29,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223625495] [2020-12-22 05:12:29,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:12:29,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:29,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:12:29,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:12:29,803 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand 5 states. [2020-12-22 05:12:29,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:29,912 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2020-12-22 05:12:29,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:12:29,912 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-12-22 05:12:29,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:29,913 INFO L225 Difference]: With dead ends: 88 [2020-12-22 05:12:29,914 INFO L226 Difference]: Without dead ends: 84 [2020-12-22 05:12:29,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:12:29,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-22 05:12:29,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 72. [2020-12-22 05:12:29,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-22 05:12:29,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2020-12-22 05:12:29,924 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 21 [2020-12-22 05:12:29,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:29,924 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2020-12-22 05:12:29,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:12:29,925 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2020-12-22 05:12:29,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 05:12:29,925 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:29,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:30,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 05:12:30,140 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:30,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:30,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1333477300, now seen corresponding path program 1 times [2020-12-22 05:12:30,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:30,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368696244] [2020-12-22 05:12:30,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:30,155 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:30,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [206289161] [2020-12-22 05:12:30,156 INFO L95 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 [2020-12-22 05:12:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:30,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 05:12:30,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:30,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368696244] [2020-12-22 05:12:30,323 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:30,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206289161] [2020-12-22 05:12:30,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:12:30,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 05:12:30,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506746351] [2020-12-22 05:12:30,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:12:30,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:30,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:12:30,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:12:30,325 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 8 states. [2020-12-22 05:12:30,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:30,512 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-12-22 05:12:30,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:12:30,513 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-12-22 05:12:30,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:30,514 INFO L225 Difference]: With dead ends: 80 [2020-12-22 05:12:30,514 INFO L226 Difference]: Without dead ends: 72 [2020-12-22 05:12:30,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:12:30,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-22 05:12:30,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-12-22 05:12:30,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-22 05:12:30,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-12-22 05:12:30,526 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 22 [2020-12-22 05:12:30,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:30,527 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-12-22 05:12:30,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:12:30,527 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-12-22 05:12:30,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 05:12:30,528 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:30,528 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:30,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:30,743 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:30,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:30,744 INFO L82 PathProgramCache]: Analyzing trace with hash -89606074, now seen corresponding path program 1 times [2020-12-22 05:12:30,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:30,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334493835] [2020-12-22 05:12:30,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:30,761 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:30,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [206034230] [2020-12-22 05:12:30,762 INFO L95 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 [2020-12-22 05:12:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:30,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-22 05:12:30,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:31,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334493835] [2020-12-22 05:12:31,026 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:31,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206034230] [2020-12-22 05:12:31,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:31,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:12:31,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685146087] [2020-12-22 05:12:31,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:12:31,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:31,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:12:31,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:12:31,028 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 9 states. [2020-12-22 05:12:31,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:31,493 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2020-12-22 05:12:31,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:12:31,494 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-12-22 05:12:31,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:31,495 INFO L225 Difference]: With dead ends: 105 [2020-12-22 05:12:31,495 INFO L226 Difference]: Without dead ends: 103 [2020-12-22 05:12:31,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:12:31,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-22 05:12:31,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 74. [2020-12-22 05:12:31,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-22 05:12:31,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-12-22 05:12:31,508 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 23 [2020-12-22 05:12:31,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:31,508 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-12-22 05:12:31,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:12:31,508 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-12-22 05:12:31,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 05:12:31,509 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:31,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:31,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:31,724 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:31,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:31,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1021281049, now seen corresponding path program 1 times [2020-12-22 05:12:31,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:31,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170754392] [2020-12-22 05:12:31,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:31,739 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:31,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1528268286] [2020-12-22 05:12:31,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:31,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 45 conjunts are in the unsatisfiable core [2020-12-22 05:12:31,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:32,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:32,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170754392] [2020-12-22 05:12:32,065 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:32,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528268286] [2020-12-22 05:12:32,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:32,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:12:32,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621920936] [2020-12-22 05:12:32,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:12:32,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:32,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:12:32,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:12:32,074 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 11 states. [2020-12-22 05:12:32,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:32,466 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-12-22 05:12:32,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:12:32,466 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-12-22 05:12:32,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:32,467 INFO L225 Difference]: With dead ends: 118 [2020-12-22 05:12:32,468 INFO L226 Difference]: Without dead ends: 104 [2020-12-22 05:12:32,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:12:32,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-22 05:12:32,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2020-12-22 05:12:32,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-22 05:12:32,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2020-12-22 05:12:32,483 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 25 [2020-12-22 05:12:32,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:32,483 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2020-12-22 05:12:32,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:12:32,484 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2020-12-22 05:12:32,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 05:12:32,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:32,485 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:32,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 05:12:32,700 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:32,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:32,701 INFO L82 PathProgramCache]: Analyzing trace with hash 477321350, now seen corresponding path program 1 times [2020-12-22 05:12:32,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:32,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506813079] [2020-12-22 05:12:32,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:32,716 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:32,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234777164] [2020-12-22 05:12:32,717 INFO L95 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 [2020-12-22 05:12:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:32,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 05:12:32,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:32,903 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:32,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506813079] [2020-12-22 05:12:32,904 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:32,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234777164] [2020-12-22 05:12:32,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:32,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:12:32,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673116750] [2020-12-22 05:12:32,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:12:32,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:32,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:12:32,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:12:32,906 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand 8 states. [2020-12-22 05:12:33,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:33,243 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2020-12-22 05:12:33,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:12:33,244 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-12-22 05:12:33,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:33,246 INFO L225 Difference]: With dead ends: 116 [2020-12-22 05:12:33,246 INFO L226 Difference]: Without dead ends: 106 [2020-12-22 05:12:33,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:12:33,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-22 05:12:33,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2020-12-22 05:12:33,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-22 05:12:33,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2020-12-22 05:12:33,263 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 29 [2020-12-22 05:12:33,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:33,263 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2020-12-22 05:12:33,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:12:33,263 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2020-12-22 05:12:33,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 05:12:33,264 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:33,265 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:33,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:33,479 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:33,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:33,480 INFO L82 PathProgramCache]: Analyzing trace with hash 219215494, now seen corresponding path program 2 times [2020-12-22 05:12:33,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:33,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686531805] [2020-12-22 05:12:33,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:33,495 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:33,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000364890] [2020-12-22 05:12:33,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:33,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:12:33,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:12:33,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 05:12:33,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:33,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686531805] [2020-12-22 05:12:33,694 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:33,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000364890] [2020-12-22 05:12:33,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:33,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:12:33,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908640363] [2020-12-22 05:12:33,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:12:33,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:33,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:12:33,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:12:33,696 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand 8 states. [2020-12-22 05:12:34,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:34,106 INFO L93 Difference]: Finished difference Result 131 states and 147 transitions. [2020-12-22 05:12:34,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:12:34,107 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-12-22 05:12:34,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:34,108 INFO L225 Difference]: With dead ends: 131 [2020-12-22 05:12:34,108 INFO L226 Difference]: Without dead ends: 127 [2020-12-22 05:12:34,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:12:34,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-22 05:12:34,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 114. [2020-12-22 05:12:34,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-12-22 05:12:34,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-12-22 05:12:34,125 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 29 [2020-12-22 05:12:34,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:34,126 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-12-22 05:12:34,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:12:34,126 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-12-22 05:12:34,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:12:34,127 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:34,127 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:34,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:34,341 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:34,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:34,342 INFO L82 PathProgramCache]: Analyzing trace with hash -855526903, now seen corresponding path program 1 times [2020-12-22 05:12:34,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:34,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967168106] [2020-12-22 05:12:34,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:34,362 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:34,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118222776] [2020-12-22 05:12:34,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:34,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 05:12:34,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:34,608 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:34,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967168106] [2020-12-22 05:12:34,608 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:34,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118222776] [2020-12-22 05:12:34,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:34,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:12:34,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4202508] [2020-12-22 05:12:34,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:12:34,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:34,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:12:34,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:12:34,610 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 8 states. [2020-12-22 05:12:34,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:34,937 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions. [2020-12-22 05:12:34,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:12:34,937 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-22 05:12:34,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:34,938 INFO L225 Difference]: With dead ends: 142 [2020-12-22 05:12:34,939 INFO L226 Difference]: Without dead ends: 140 [2020-12-22 05:12:34,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:12:34,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-22 05:12:34,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 114. [2020-12-22 05:12:34,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-12-22 05:12:34,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2020-12-22 05:12:34,963 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 31 [2020-12-22 05:12:34,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:34,964 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2020-12-22 05:12:34,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:12:34,964 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2020-12-22 05:12:34,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:12:34,970 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:34,970 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:35,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 05:12:35,184 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:35,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:35,185 INFO L82 PathProgramCache]: Analyzing trace with hash 155590347, now seen corresponding path program 2 times [2020-12-22 05:12:35,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:35,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183916138] [2020-12-22 05:12:35,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:35,197 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:35,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1147666635] [2020-12-22 05:12:35,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:35,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:12:35,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:12:35,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-22 05:12:35,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:35,554 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:35,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183916138] [2020-12-22 05:12:35,555 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:35,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147666635] [2020-12-22 05:12:35,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:35,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:12:35,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368889781] [2020-12-22 05:12:35,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:12:35,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:35,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:12:35,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:12:35,557 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand 11 states. [2020-12-22 05:12:36,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:36,082 INFO L93 Difference]: Finished difference Result 148 states and 166 transitions. [2020-12-22 05:12:36,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:12:36,083 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-12-22 05:12:36,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:36,085 INFO L225 Difference]: With dead ends: 148 [2020-12-22 05:12:36,085 INFO L226 Difference]: Without dead ends: 146 [2020-12-22 05:12:36,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:12:36,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-12-22 05:12:36,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 118. [2020-12-22 05:12:36,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-22 05:12:36,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 134 transitions. [2020-12-22 05:12:36,105 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 134 transitions. Word has length 31 [2020-12-22 05:12:36,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:36,106 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 134 transitions. [2020-12-22 05:12:36,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:12:36,107 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 134 transitions. [2020-12-22 05:12:36,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:12:36,110 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:36,110 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:36,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 05:12:36,327 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:36,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:36,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1663177194, now seen corresponding path program 2 times [2020-12-22 05:12:36,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:36,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715702088] [2020-12-22 05:12:36,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:36,340 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:36,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427226173] [2020-12-22 05:12:36,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:36,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:12:36,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:12:36,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 57 conjunts are in the unsatisfiable core [2020-12-22 05:12:36,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:36,905 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:36,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715702088] [2020-12-22 05:12:36,906 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:36,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427226173] [2020-12-22 05:12:36,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:36,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-22 05:12:36,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704007481] [2020-12-22 05:12:36,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 05:12:36,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:36,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 05:12:36,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-12-22 05:12:36,908 INFO L87 Difference]: Start difference. First operand 118 states and 134 transitions. Second operand 14 states. [2020-12-22 05:12:37,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:37,361 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions. [2020-12-22 05:12:37,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:12:37,362 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2020-12-22 05:12:37,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:37,363 INFO L225 Difference]: With dead ends: 160 [2020-12-22 05:12:37,363 INFO L226 Difference]: Without dead ends: 148 [2020-12-22 05:12:37,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2020-12-22 05:12:37,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-22 05:12:37,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 126. [2020-12-22 05:12:37,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-12-22 05:12:37,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2020-12-22 05:12:37,381 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 33 [2020-12-22 05:12:37,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:37,381 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2020-12-22 05:12:37,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 05:12:37,381 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2020-12-22 05:12:37,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:12:37,382 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:37,382 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:37,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 05:12:37,595 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:37,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:37,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1610721748, now seen corresponding path program 1 times [2020-12-22 05:12:37,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:37,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954631973] [2020-12-22 05:12:37,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:37,620 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:37,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291090079] [2020-12-22 05:12:37,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:37,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 05:12:37,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:37,861 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:37,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954631973] [2020-12-22 05:12:37,862 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:37,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291090079] [2020-12-22 05:12:37,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:37,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:12:37,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087743712] [2020-12-22 05:12:37,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:12:37,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:37,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:12:37,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:12:37,864 INFO L87 Difference]: Start difference. First operand 126 states and 143 transitions. Second operand 8 states. [2020-12-22 05:12:38,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:38,180 INFO L93 Difference]: Finished difference Result 159 states and 177 transitions. [2020-12-22 05:12:38,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:12:38,181 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-12-22 05:12:38,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:38,182 INFO L225 Difference]: With dead ends: 159 [2020-12-22 05:12:38,182 INFO L226 Difference]: Without dead ends: 147 [2020-12-22 05:12:38,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:12:38,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-12-22 05:12:38,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 119. [2020-12-22 05:12:38,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-12-22 05:12:38,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2020-12-22 05:12:38,198 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 33 [2020-12-22 05:12:38,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:38,199 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2020-12-22 05:12:38,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:12:38,199 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2020-12-22 05:12:38,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:12:38,200 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:38,200 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:38,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:38,414 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:38,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:38,415 INFO L82 PathProgramCache]: Analyzing trace with hash 130855945, now seen corresponding path program 3 times [2020-12-22 05:12:38,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:38,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753008851] [2020-12-22 05:12:38,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:38,425 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:38,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951767395] [2020-12-22 05:12:38,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:38,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 05:12:38,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:12:38,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 50 conjunts are in the unsatisfiable core [2020-12-22 05:12:38,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:38,870 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:12:38,876 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:12:38,880 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:12:42,391 WARN L197 SmtUtils]: Spent 2.57 s on a formula simplification that was a NOOP. DAG size: 29 [2020-12-22 05:12:42,444 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 05:12:42,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753008851] [2020-12-22 05:12:42,444 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:42,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951767395] [2020-12-22 05:12:42,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:42,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-12-22 05:12:42,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772476928] [2020-12-22 05:12:42,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 05:12:42,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:42,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 05:12:42,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=212, Unknown=1, NotChecked=0, Total=272 [2020-12-22 05:12:42,447 INFO L87 Difference]: Start difference. First operand 119 states and 134 transitions. Second operand 17 states. [2020-12-22 05:12:45,048 WARN L197 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2020-12-22 05:12:46,030 WARN L197 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2020-12-22 05:12:47,544 WARN L197 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 61 DAG size of output: 37 [2020-12-22 05:12:52,645 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 28 [2020-12-22 05:13:01,523 WARN L197 SmtUtils]: Spent 8.84 s on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2020-12-22 05:13:09,263 WARN L197 SmtUtils]: Spent 7.65 s on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2020-12-22 05:13:11,078 WARN L197 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-12-22 05:13:12,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:12,179 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2020-12-22 05:13:12,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:13:12,180 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 37 [2020-12-22 05:13:12,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:12,181 INFO L225 Difference]: With dead ends: 172 [2020-12-22 05:13:12,181 INFO L226 Difference]: Without dead ends: 162 [2020-12-22 05:13:12,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=190, Invalid=508, Unknown=4, NotChecked=0, Total=702 [2020-12-22 05:13:12,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-22 05:13:12,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 130. [2020-12-22 05:13:12,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-22 05:13:12,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2020-12-22 05:13:12,207 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 37 [2020-12-22 05:13:12,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:12,207 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2020-12-22 05:13:12,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 05:13:12,207 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2020-12-22 05:13:12,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:13:12,208 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:12,208 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:12,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 05:13:12,422 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:12,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:12,423 INFO L82 PathProgramCache]: Analyzing trace with hash -127249911, now seen corresponding path program 4 times [2020-12-22 05:13:12,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:12,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207574691] [2020-12-22 05:13:12,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:12,447 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:12,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428866799] [2020-12-22 05:13:12,452 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:12,509 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:13:12,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:13:12,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 05:13:12,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:12,722 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:12,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207574691] [2020-12-22 05:13:12,722 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:12,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428866799] [2020-12-22 05:13:12,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:12,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:13:12,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039931680] [2020-12-22 05:13:12,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:13:12,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:12,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:13:12,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:13:12,727 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 9 states. [2020-12-22 05:13:13,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:13,245 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2020-12-22 05:13:13,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:13:13,245 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-22 05:13:13,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:13,247 INFO L225 Difference]: With dead ends: 162 [2020-12-22 05:13:13,247 INFO L226 Difference]: Without dead ends: 158 [2020-12-22 05:13:13,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:13:13,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-22 05:13:13,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 142. [2020-12-22 05:13:13,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-22 05:13:13,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2020-12-22 05:13:13,274 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 37 [2020-12-22 05:13:13,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:13,274 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2020-12-22 05:13:13,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:13:13,275 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2020-12-22 05:13:13,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:13:13,275 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:13,275 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:13,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 05:13:13,489 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:13,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:13,490 INFO L82 PathProgramCache]: Analyzing trace with hash -127309493, now seen corresponding path program 5 times [2020-12-22 05:13:13,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:13,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750978752] [2020-12-22 05:13:13,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:13,511 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:13,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739366268] [2020-12-22 05:13:13,512 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:14,591 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-22 05:13:14,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:13:14,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 05:13:14,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:14,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750978752] [2020-12-22 05:13:14,744 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:14,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739366268] [2020-12-22 05:13:14,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:14,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:13:14,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89055833] [2020-12-22 05:13:14,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:13:14,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:14,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:13:14,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:13:14,746 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand 7 states. [2020-12-22 05:13:15,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:15,087 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2020-12-22 05:13:15,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:13:15,087 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-12-22 05:13:15,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:15,090 INFO L225 Difference]: With dead ends: 162 [2020-12-22 05:13:15,090 INFO L226 Difference]: Without dead ends: 152 [2020-12-22 05:13:15,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:13:15,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-12-22 05:13:15,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 142. [2020-12-22 05:13:15,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-22 05:13:15,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2020-12-22 05:13:15,115 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 37 [2020-12-22 05:13:15,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:15,116 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2020-12-22 05:13:15,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:13:15,116 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2020-12-22 05:13:15,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:13:15,116 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:15,117 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:15,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 05:13:15,325 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:15,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:15,326 INFO L82 PathProgramCache]: Analyzing trace with hash 948563977, now seen corresponding path program 6 times [2020-12-22 05:13:15,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:15,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974748544] [2020-12-22 05:13:15,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:15,345 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:15,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642049191] [2020-12-22 05:13:15,346 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:15,410 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-12-22 05:13:15,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:13:15,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-22 05:13:15,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:15,596 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:15,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974748544] [2020-12-22 05:13:15,597 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:15,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642049191] [2020-12-22 05:13:15,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:15,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:13:15,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920513394] [2020-12-22 05:13:15,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:13:15,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:15,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:13:15,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:13:15,598 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand 9 states. [2020-12-22 05:13:16,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:16,347 INFO L93 Difference]: Finished difference Result 170 states and 192 transitions. [2020-12-22 05:13:16,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:13:16,348 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-22 05:13:16,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:16,349 INFO L225 Difference]: With dead ends: 170 [2020-12-22 05:13:16,349 INFO L226 Difference]: Without dead ends: 166 [2020-12-22 05:13:16,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:13:16,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-12-22 05:13:16,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 146. [2020-12-22 05:13:16,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-22 05:13:16,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 167 transitions. [2020-12-22 05:13:16,374 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 167 transitions. Word has length 37 [2020-12-22 05:13:16,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:16,375 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 167 transitions. [2020-12-22 05:13:16,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:13:16,375 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 167 transitions. [2020-12-22 05:13:16,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:13:16,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:16,376 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:16,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:16,589 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:16,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:16,591 INFO L82 PathProgramCache]: Analyzing trace with hash 948504395, now seen corresponding path program 7 times [2020-12-22 05:13:16,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:16,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524667932] [2020-12-22 05:13:16,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:16,600 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:16,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1635220291] [2020-12-22 05:13:16,600 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:13:16,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-22 05:13:16,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:16,819 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:16,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524667932] [2020-12-22 05:13:16,819 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:16,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635220291] [2020-12-22 05:13:16,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:16,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:13:16,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905146300] [2020-12-22 05:13:16,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:13:16,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:16,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:13:16,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:13:16,821 INFO L87 Difference]: Start difference. First operand 146 states and 167 transitions. Second operand 9 states. [2020-12-22 05:13:17,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:17,327 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2020-12-22 05:13:17,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:13:17,327 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-22 05:13:17,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:17,328 INFO L225 Difference]: With dead ends: 166 [2020-12-22 05:13:17,328 INFO L226 Difference]: Without dead ends: 156 [2020-12-22 05:13:17,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:13:17,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-12-22 05:13:17,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 138. [2020-12-22 05:13:17,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-12-22 05:13:17,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2020-12-22 05:13:17,351 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 37 [2020-12-22 05:13:17,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:17,351 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2020-12-22 05:13:17,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:13:17,352 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2020-12-22 05:13:17,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:13:17,352 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:17,352 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:17,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:17,568 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:17,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:17,568 INFO L82 PathProgramCache]: Analyzing trace with hash 690398539, now seen corresponding path program 8 times [2020-12-22 05:13:17,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:17,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602127125] [2020-12-22 05:13:17,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:17,580 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:17,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [940526836] [2020-12-22 05:13:17,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:17,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:13:17,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:13:17,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-22 05:13:17,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:17,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602127125] [2020-12-22 05:13:17,814 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:17,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940526836] [2020-12-22 05:13:17,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:17,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:13:17,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70843066] [2020-12-22 05:13:17,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:13:17,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:17,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:13:17,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:13:17,820 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 9 states. [2020-12-22 05:13:18,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:18,527 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2020-12-22 05:13:18,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:13:18,527 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-22 05:13:18,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:18,529 INFO L225 Difference]: With dead ends: 166 [2020-12-22 05:13:18,529 INFO L226 Difference]: Without dead ends: 162 [2020-12-22 05:13:18,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:13:18,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-22 05:13:18,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 142. [2020-12-22 05:13:18,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-22 05:13:18,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 163 transitions. [2020-12-22 05:13:18,552 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 163 transitions. Word has length 37 [2020-12-22 05:13:18,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:18,552 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 163 transitions. [2020-12-22 05:13:18,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:13:18,552 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 163 transitions. [2020-12-22 05:13:18,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 05:13:18,553 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:18,553 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:18,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-22 05:13:18,765 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:18,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:18,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1198667980, now seen corresponding path program 2 times [2020-12-22 05:13:18,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:18,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952281567] [2020-12-22 05:13:18,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:18,776 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:18,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [898899426] [2020-12-22 05:13:18,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:18,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:13:18,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:13:18,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 56 conjunts are in the unsatisfiable core [2020-12-22 05:13:18,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:34,977 WARN L197 SmtUtils]: Spent 10.77 s on a formula simplification that was a NOOP. DAG size: 40 [2020-12-22 05:13:59,560 WARN L197 SmtUtils]: Spent 18.15 s on a formula simplification that was a NOOP. DAG size: 33 [2020-12-22 05:13:59,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952281567] [2020-12-22 05:13:59,571 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:59,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898899426] [2020-12-22 05:13:59,572 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-22 05:13:59,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:13:59,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:13:59,572 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:13:59,572 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:13:59,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 05:13:59,819 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:13:59,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:13:59 BoogieIcfgContainer [2020-12-22 05:13:59,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:13:59,820 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:13:59,820 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:13:59,821 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:13:59,821 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:12:26" (3/4) ... [2020-12-22 05:13:59,825 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:13:59,825 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:13:59,827 INFO L168 Benchmark]: Toolchain (without parser) took 94905.28 ms. Allocated memory was 166.7 MB in the beginning and 324.0 MB in the end (delta: 157.3 MB). Free memory was 142.2 MB in the beginning and 266.5 MB in the end (delta: -124.3 MB). Peak memory consumption was 33.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:13:59,827 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 166.7 MB. Free memory is still 142.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:13:59,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.21 ms. Allocated memory is still 166.7 MB. Free memory was 142.1 MB in the beginning and 132.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:13:59,829 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.12 ms. Allocated memory is still 166.7 MB. Free memory was 132.1 MB in the beginning and 130.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:13:59,830 INFO L168 Benchmark]: Boogie Preprocessor took 59.39 ms. Allocated memory is still 166.7 MB. Free memory was 130.3 MB in the beginning and 129.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:13:59,830 INFO L168 Benchmark]: RCFGBuilder took 743.95 ms. Allocated memory is still 166.7 MB. Free memory was 129.1 MB in the beginning and 146.8 MB in the end (delta: -17.7 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:13:59,831 INFO L168 Benchmark]: TraceAbstraction took 93734.41 ms. Allocated memory was 166.7 MB in the beginning and 324.0 MB in the end (delta: 157.3 MB). Free memory was 146.2 MB in the beginning and 267.0 MB in the end (delta: -120.8 MB). Peak memory consumption was 37.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:13:59,831 INFO L168 Benchmark]: Witness Printer took 4.66 ms. Allocated memory is still 324.0 MB. Free memory was 267.0 MB in the beginning and 266.5 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:13:59,833 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 166.7 MB. Free memory is still 142.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 271.21 ms. Allocated memory is still 166.7 MB. Free memory was 142.1 MB in the beginning and 132.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 74.12 ms. Allocated memory is still 166.7 MB. Free memory was 132.1 MB in the beginning and 130.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.39 ms. Allocated memory is still 166.7 MB. Free memory was 130.3 MB in the beginning and 129.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 743.95 ms. Allocated memory is still 166.7 MB. Free memory was 129.1 MB in the beginning and 146.8 MB in the end (delta: -17.7 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 93734.41 ms. Allocated memory was 166.7 MB in the beginning and 324.0 MB in the end (delta: 157.3 MB). Free memory was 146.2 MB in the beginning and 267.0 MB in the end (delta: -120.8 MB). Peak memory consumption was 37.5 MB. Max. memory is 8.0 GB. * Witness Printer took 4.66 ms. Allocated memory is still 324.0 MB. Free memory was 267.0 MB in the beginning and 266.5 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] long long a, b, p, q, r, s; [L20] int x, y; [L21] x = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 [L32] r = 0 [L33] s = 1 [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L40] COND FALSE !(!(a != b)) [L43] COND FALSE !(a > b) [L48] b = b - a [L49] q = q - p [L50] s = s - r [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L40] COND FALSE !(!(a != b)) [L43] COND FALSE !(a > b) [L48] b = b - a [L49] q = q - p [L50] s = s - r [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L40] COND FALSE !(!(a != b)) [L43] COND TRUE a > b [L44] a = a - b [L45] p = p - q [L46] r = r - s [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 93.6s, OverallIterations: 22, TraceHistogramMax: 4, AutomataDifference: 37.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 699 SDtfs, 2040 SDslu, 2141 SDs, 0 SdLazy, 3284 SolverSat, 391 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 8.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 662 GetRequests, 406 SyntacticMatches, 1 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 32.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 21 MinimizatonAttempts, 333 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 577 NumberOfCodeBlocks, 566 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 556 ConstructedInterpolants, 4 QuantifiedInterpolants, 240653 SizeOfPredicates, 222 NumberOfNonLiveVariables, 2350 ConjunctsInSsa, 668 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 19/288 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...