/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/array-examples/standard_init8_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-21 21:34:07,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-21 21:34:07,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-21 21:34:07,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-21 21:34:07,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-21 21:34:07,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-21 21:34:07,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-21 21:34:07,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-21 21:34:07,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-21 21:34:07,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-21 21:34:07,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-21 21:34:07,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-21 21:34:07,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-21 21:34:07,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-21 21:34:07,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-21 21:34:07,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-21 21:34:07,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-21 21:34:07,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-21 21:34:07,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-21 21:34:07,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-21 21:34:07,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-21 21:34:07,627 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-21 21:34:07,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-21 21:34:07,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-21 21:34:07,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-21 21:34:07,630 INFO L138 SettingsManager]: * Use SBE=true [2020-12-21 21:34:07,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-21 21:34:07,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-21 21:34:07,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-21 21:34:07,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-21 21:34:07,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-21 21:34:07,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-21 21:34:07,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-21 21:34:07,632 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-21 21:34:07,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-21 21:34:07,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-21 21:34:07,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-21 21:34:07,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-21 21:34:07,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-21 21:34:07,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-21 21:34:07,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-21 21:34:07,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-21 21:34:07,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-21 21:34:07,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-21 21:34:07,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-21 21:34:07,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-21 21:34:07,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-21 21:34:08,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-21 21:34:08,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-21 21:34:08,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-21 21:34:08,069 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-21 21:34:08,069 INFO L275 PluginConnector]: CDTParser initialized [2020-12-21 21:34:08,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_init8_ground-1.i [2020-12-21 21:34:08,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f05c91ba6/d9bc72fb879441d088f6ce950969f7bd/FLAGff9cd1074 [2020-12-21 21:34:08,905 INFO L306 CDTParser]: Found 1 translation units. [2020-12-21 21:34:08,906 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_init8_ground-1.i [2020-12-21 21:34:08,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f05c91ba6/d9bc72fb879441d088f6ce950969f7bd/FLAGff9cd1074 [2020-12-21 21:34:09,263 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f05c91ba6/d9bc72fb879441d088f6ce950969f7bd [2020-12-21 21:34:09,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-21 21:34:09,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-21 21:34:09,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-21 21:34:09,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-21 21:34:09,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-21 21:34:09,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:34:09" (1/1) ... [2020-12-21 21:34:09,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cafee47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:09, skipping insertion in model container [2020-12-21 21:34:09,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:34:09" (1/1) ... [2020-12-21 21:34:09,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-21 21:34:09,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-21 21:34:09,523 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/array-examples/standard_init8_ground-1.i[816,829] [2020-12-21 21:34:09,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 21:34:09,556 INFO L203 MainTranslator]: Completed pre-run [2020-12-21 21:34:09,572 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/array-examples/standard_init8_ground-1.i[816,829] [2020-12-21 21:34:09,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 21:34:09,611 INFO L208 MainTranslator]: Completed translation [2020-12-21 21:34:09,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:09 WrapperNode [2020-12-21 21:34:09,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-21 21:34:09,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-21 21:34:09,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-21 21:34:09,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-21 21:34:09,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:09" (1/1) ... [2020-12-21 21:34:09,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:09" (1/1) ... [2020-12-21 21:34:09,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-21 21:34:09,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-21 21:34:09,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-21 21:34:09,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-21 21:34:09,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:09" (1/1) ... [2020-12-21 21:34:09,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:09" (1/1) ... [2020-12-21 21:34:09,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:09" (1/1) ... [2020-12-21 21:34:09,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:09" (1/1) ... [2020-12-21 21:34:09,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:09" (1/1) ... [2020-12-21 21:34:09,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:09" (1/1) ... [2020-12-21 21:34:09,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:09" (1/1) ... [2020-12-21 21:34:09,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-21 21:34:09,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-21 21:34:09,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-21 21:34:09,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-21 21:34:09,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:09" (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 [2020-12-21 21:34:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-21 21:34:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-21 21:34:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-21 21:34:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-21 21:34:09,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-21 21:34:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-21 21:34:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-21 21:34:10,217 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-21 21:34:10,218 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2020-12-21 21:34:10,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:34:10 BoogieIcfgContainer [2020-12-21 21:34:10,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-21 21:34:10,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-21 21:34:10,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-21 21:34:10,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-21 21:34:10,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:34:09" (1/3) ... [2020-12-21 21:34:10,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206b9ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:34:10, skipping insertion in model container [2020-12-21 21:34:10,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:34:09" (2/3) ... [2020-12-21 21:34:10,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206b9ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:34:10, skipping insertion in model container [2020-12-21 21:34:10,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:34:10" (3/3) ... [2020-12-21 21:34:10,230 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init8_ground-1.i [2020-12-21 21:34:10,237 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-21 21:34:10,242 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-21 21:34:10,269 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-21 21:34:10,298 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-21 21:34:10,298 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-21 21:34:10,299 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-21 21:34:10,299 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-21 21:34:10,299 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-21 21:34:10,299 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-21 21:34:10,299 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-21 21:34:10,299 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-21 21:34:10,316 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-12-21 21:34:10,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-21 21:34:10,322 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:10,323 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] [2020-12-21 21:34:10,324 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:10,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:10,331 INFO L82 PathProgramCache]: Analyzing trace with hash 730030661, now seen corresponding path program 1 times [2020-12-21 21:34:10,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:10,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922286903] [2020-12-21 21:34:10,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:10,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 21:34:10,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922286903] [2020-12-21 21:34:10,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 21:34:10,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 21:34:10,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156489791] [2020-12-21 21:34:10,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 21:34:10,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 21:34:10,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 21:34:10,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 21:34:10,569 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-12-21 21:34:10,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 21:34:10,717 INFO L93 Difference]: Finished difference Result 61 states and 111 transitions. [2020-12-21 21:34:10,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 21:34:10,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-21 21:34:10,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 21:34:10,730 INFO L225 Difference]: With dead ends: 61 [2020-12-21 21:34:10,730 INFO L226 Difference]: Without dead ends: 32 [2020-12-21 21:34:10,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 21:34:10,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-21 21:34:10,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-12-21 21:34:10,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-21 21:34:10,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2020-12-21 21:34:10,777 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 21 [2020-12-21 21:34:10,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 21:34:10,777 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2020-12-21 21:34:10,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 21:34:10,777 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2020-12-21 21:34:10,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-21 21:34:10,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:10,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 21:34:10,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-21 21:34:10,780 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:10,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:10,781 INFO L82 PathProgramCache]: Analyzing trace with hash 798141757, now seen corresponding path program 1 times [2020-12-21 21:34:10,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:10,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434460745] [2020-12-21 21:34:10,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:10,848 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-21 21:34:10,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434460745] [2020-12-21 21:34:10,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627607968] [2020-12-21 21:34:10,849 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 [2020-12-21 21:34:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:10,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-21 21:34:10,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 21:34:11,096 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-21 21:34:11,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 21:34:11,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-21 21:34:11,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772893750] [2020-12-21 21:34:11,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-21 21:34:11,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 21:34:11,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-21 21:34:11,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-21 21:34:11,108 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 5 states. [2020-12-21 21:34:11,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 21:34:11,347 INFO L93 Difference]: Finished difference Result 68 states and 91 transitions. [2020-12-21 21:34:11,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-21 21:34:11,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-12-21 21:34:11,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 21:34:11,352 INFO L225 Difference]: With dead ends: 68 [2020-12-21 21:34:11,353 INFO L226 Difference]: Without dead ends: 40 [2020-12-21 21:34:11,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-21 21:34:11,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-21 21:34:11,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-12-21 21:34:11,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-21 21:34:11,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-12-21 21:34:11,380 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 29 [2020-12-21 21:34:11,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 21:34:11,381 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-12-21 21:34:11,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-21 21:34:11,382 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-12-21 21:34:11,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-21 21:34:11,387 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:11,387 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 21:34:11,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-21 21:34:11,601 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:11,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:11,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1968111935, now seen corresponding path program 2 times [2020-12-21 21:34:11,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:11,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708418690] [2020-12-21 21:34:11,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-21 21:34:11,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708418690] [2020-12-21 21:34:11,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819556087] [2020-12-21 21:34:11,845 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 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 [2020-12-21 21:34:11,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-21 21:34:11,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 21:34:11,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-21 21:34:12,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 21:34:12,104 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-21 21:34:12,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 21:34:12,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-21 21:34:12,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568019499] [2020-12-21 21:34:12,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-21 21:34:12,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 21:34:12,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-21 21:34:12,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-21 21:34:12,117 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-12-21 21:34:12,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 21:34:12,324 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2020-12-21 21:34:12,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-21 21:34:12,325 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-12-21 21:34:12,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 21:34:12,328 INFO L225 Difference]: With dead ends: 83 [2020-12-21 21:34:12,329 INFO L226 Difference]: Without dead ends: 48 [2020-12-21 21:34:12,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-21 21:34:12,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-21 21:34:12,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-12-21 21:34:12,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-21 21:34:12,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-12-21 21:34:12,351 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 37 [2020-12-21 21:34:12,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 21:34:12,351 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-12-21 21:34:12,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-21 21:34:12,352 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-12-21 21:34:12,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-21 21:34:12,357 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:12,357 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 21:34:12,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 21:34:12,571 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:12,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:12,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1959606083, now seen corresponding path program 3 times [2020-12-21 21:34:12,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:12,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394568918] [2020-12-21 21:34:12,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-12-21 21:34:12,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394568918] [2020-12-21 21:34:12,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402612596] [2020-12-21 21:34:12,676 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 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 [2020-12-21 21:34:12,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-21 21:34:12,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 21:34:12,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-21 21:34:12,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 21:34:12,982 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-12-21 21:34:12,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 21:34:12,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-21 21:34:12,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976151967] [2020-12-21 21:34:12,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-21 21:34:12,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 21:34:12,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-21 21:34:12,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-21 21:34:12,985 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 7 states. [2020-12-21 21:34:13,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 21:34:13,166 INFO L93 Difference]: Finished difference Result 98 states and 121 transitions. [2020-12-21 21:34:13,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-21 21:34:13,167 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-12-21 21:34:13,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 21:34:13,168 INFO L225 Difference]: With dead ends: 98 [2020-12-21 21:34:13,168 INFO L226 Difference]: Without dead ends: 56 [2020-12-21 21:34:13,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-21 21:34:13,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-21 21:34:13,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-12-21 21:34:13,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-21 21:34:13,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2020-12-21 21:34:13,177 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 45 [2020-12-21 21:34:13,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 21:34:13,178 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2020-12-21 21:34:13,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-21 21:34:13,178 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2020-12-21 21:34:13,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-21 21:34:13,179 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:13,179 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 21:34:13,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 21:34:13,395 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:13,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:13,396 INFO L82 PathProgramCache]: Analyzing trace with hash -33175999, now seen corresponding path program 4 times [2020-12-21 21:34:13,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:13,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072297558] [2020-12-21 21:34:13,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:13,589 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-12-21 21:34:13,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072297558] [2020-12-21 21:34:13,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698337021] [2020-12-21 21:34:13,590 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 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 [2020-12-21 21:34:13,691 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-21 21:34:13,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 21:34:13,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-21 21:34:13,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 21:34:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-12-21 21:34:13,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 21:34:13,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-12-21 21:34:13,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960043107] [2020-12-21 21:34:13,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-21 21:34:13,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 21:34:13,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-21 21:34:13,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-21 21:34:13,815 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 8 states. [2020-12-21 21:34:14,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 21:34:14,035 INFO L93 Difference]: Finished difference Result 113 states and 136 transitions. [2020-12-21 21:34:14,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-21 21:34:14,036 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-12-21 21:34:14,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 21:34:14,037 INFO L225 Difference]: With dead ends: 113 [2020-12-21 21:34:14,038 INFO L226 Difference]: Without dead ends: 64 [2020-12-21 21:34:14,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-21 21:34:14,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-21 21:34:14,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-12-21 21:34:14,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-21 21:34:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2020-12-21 21:34:14,048 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 53 [2020-12-21 21:34:14,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 21:34:14,048 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2020-12-21 21:34:14,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-21 21:34:14,049 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2020-12-21 21:34:14,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-21 21:34:14,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:14,050 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 21:34:14,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 21:34:14,264 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:14,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:14,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1705114563, now seen corresponding path program 5 times [2020-12-21 21:34:14,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:14,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286661961] [2020-12-21 21:34:14,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:14,384 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-12-21 21:34:14,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286661961] [2020-12-21 21:34:14,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166286878] [2020-12-21 21:34:14,385 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 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 [2020-12-21 21:34:30,448 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-21 21:34:30,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 21:34:30,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-21 21:34:30,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 21:34:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-12-21 21:34:30,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 21:34:30,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-12-21 21:34:30,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061082681] [2020-12-21 21:34:30,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-21 21:34:30,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 21:34:30,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-21 21:34:30,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-21 21:34:30,566 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand 9 states. [2020-12-21 21:34:30,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 21:34:30,731 INFO L93 Difference]: Finished difference Result 128 states and 151 transitions. [2020-12-21 21:34:30,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-21 21:34:30,732 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-12-21 21:34:30,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 21:34:30,733 INFO L225 Difference]: With dead ends: 128 [2020-12-21 21:34:30,733 INFO L226 Difference]: Without dead ends: 72 [2020-12-21 21:34:30,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-12-21 21:34:30,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-21 21:34:30,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-12-21 21:34:30,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-21 21:34:30,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2020-12-21 21:34:30,743 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 61 [2020-12-21 21:34:30,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 21:34:30,743 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2020-12-21 21:34:30,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-21 21:34:30,744 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2020-12-21 21:34:30,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-21 21:34:30,745 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:30,745 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 21:34:30,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-21 21:34:30,962 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:30,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:30,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1731269183, now seen corresponding path program 6 times [2020-12-21 21:34:30,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:30,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997019971] [2020-12-21 21:34:30,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:31,166 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-12-21 21:34:31,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997019971] [2020-12-21 21:34:31,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293663726] [2020-12-21 21:34:31,167 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 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 [2020-12-21 21:34:33,286 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-12-21 21:34:33,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 21:34:33,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-21 21:34:33,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 21:34:33,398 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-12-21 21:34:33,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 21:34:33,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-12-21 21:34:33,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693116224] [2020-12-21 21:34:33,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-21 21:34:33,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 21:34:33,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-21 21:34:33,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-21 21:34:33,402 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand 10 states. [2020-12-21 21:34:33,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 21:34:33,565 INFO L93 Difference]: Finished difference Result 143 states and 166 transitions. [2020-12-21 21:34:33,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-21 21:34:33,566 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-12-21 21:34:33,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 21:34:33,567 INFO L225 Difference]: With dead ends: 143 [2020-12-21 21:34:33,567 INFO L226 Difference]: Without dead ends: 80 [2020-12-21 21:34:33,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-12-21 21:34:33,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-21 21:34:33,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-12-21 21:34:33,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-21 21:34:33,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2020-12-21 21:34:33,577 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 69 [2020-12-21 21:34:33,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 21:34:33,577 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2020-12-21 21:34:33,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-21 21:34:33,578 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2020-12-21 21:34:33,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-21 21:34:33,579 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:33,579 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 21:34:33,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 21:34:33,781 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:33,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:33,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1733009475, now seen corresponding path program 7 times [2020-12-21 21:34:33,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:33,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3869544] [2020-12-21 21:34:33,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:33,998 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2020-12-21 21:34:33,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3869544] [2020-12-21 21:34:33,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747342931] [2020-12-21 21:34:33,999 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 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 [2020-12-21 21:34:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:34,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-21 21:34:34,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 21:34:34,234 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2020-12-21 21:34:34,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 21:34:34,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-12-21 21:34:34,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276000159] [2020-12-21 21:34:34,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-21 21:34:34,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 21:34:34,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-21 21:34:34,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-21 21:34:34,237 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 11 states. [2020-12-21 21:34:34,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 21:34:34,417 INFO L93 Difference]: Finished difference Result 158 states and 181 transitions. [2020-12-21 21:34:34,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-21 21:34:34,418 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2020-12-21 21:34:34,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 21:34:34,419 INFO L225 Difference]: With dead ends: 158 [2020-12-21 21:34:34,419 INFO L226 Difference]: Without dead ends: 88 [2020-12-21 21:34:34,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-12-21 21:34:34,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-21 21:34:34,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-12-21 21:34:34,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-21 21:34:34,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2020-12-21 21:34:34,429 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 77 [2020-12-21 21:34:34,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 21:34:34,430 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2020-12-21 21:34:34,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-21 21:34:34,430 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2020-12-21 21:34:34,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-21 21:34:34,431 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:34,432 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 21:34:34,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 21:34:34,646 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:34,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:34,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1139569985, now seen corresponding path program 8 times [2020-12-21 21:34:34,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:34,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069243145] [2020-12-21 21:34:34,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-12-21 21:34:34,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069243145] [2020-12-21 21:34:34,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693737464] [2020-12-21 21:34:34,848 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 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 [2020-12-21 21:34:34,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-21 21:34:34,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 21:34:34,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-21 21:34:34,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 21:34:35,085 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-12-21 21:34:35,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 21:34:35,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-12-21 21:34:35,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6444963] [2020-12-21 21:34:35,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-21 21:34:35,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 21:34:35,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-21 21:34:35,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-21 21:34:35,087 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand 12 states. [2020-12-21 21:34:35,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 21:34:35,278 INFO L93 Difference]: Finished difference Result 173 states and 196 transitions. [2020-12-21 21:34:35,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-21 21:34:35,279 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 85 [2020-12-21 21:34:35,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 21:34:35,280 INFO L225 Difference]: With dead ends: 173 [2020-12-21 21:34:35,280 INFO L226 Difference]: Without dead ends: 96 [2020-12-21 21:34:35,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-12-21 21:34:35,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-21 21:34:35,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-12-21 21:34:35,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-21 21:34:35,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2020-12-21 21:34:35,291 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 85 [2020-12-21 21:34:35,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 21:34:35,291 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2020-12-21 21:34:35,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-21 21:34:35,291 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2020-12-21 21:34:35,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-21 21:34:35,293 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:35,293 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 21:34:35,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-21 21:34:35,507 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:35,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:35,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1607850813, now seen corresponding path program 9 times [2020-12-21 21:34:35,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:35,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404997886] [2020-12-21 21:34:35,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:35,663 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-12-21 21:34:35,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404997886] [2020-12-21 21:34:35,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375569717] [2020-12-21 21:34:35,664 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 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 [2020-12-21 21:34:55,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-12-21 21:34:55,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 21:34:55,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-21 21:34:55,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 21:34:55,804 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-12-21 21:34:55,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 21:34:55,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-12-21 21:34:55,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829408177] [2020-12-21 21:34:55,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-21 21:34:55,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 21:34:55,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-21 21:34:55,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-21 21:34:55,814 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand 13 states. [2020-12-21 21:34:56,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 21:34:56,030 INFO L93 Difference]: Finished difference Result 188 states and 211 transitions. [2020-12-21 21:34:56,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-21 21:34:56,031 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 93 [2020-12-21 21:34:56,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 21:34:56,032 INFO L225 Difference]: With dead ends: 188 [2020-12-21 21:34:56,032 INFO L226 Difference]: Without dead ends: 104 [2020-12-21 21:34:56,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-12-21 21:34:56,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-21 21:34:56,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-12-21 21:34:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-21 21:34:56,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2020-12-21 21:34:56,060 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 93 [2020-12-21 21:34:56,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 21:34:56,061 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2020-12-21 21:34:56,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-21 21:34:56,061 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2020-12-21 21:34:56,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-21 21:34:56,062 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:56,063 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 21:34:56,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 21:34:56,264 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:56,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:56,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1782471873, now seen corresponding path program 10 times [2020-12-21 21:34:56,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:56,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33495528] [2020-12-21 21:34:56,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:56,453 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2020-12-21 21:34:56,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33495528] [2020-12-21 21:34:56,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6197823] [2020-12-21 21:34:56,454 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 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 [2020-12-21 21:34:56,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-21 21:34:56,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 21:34:56,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-21 21:34:56,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 21:34:56,685 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2020-12-21 21:34:56,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 21:34:56,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-12-21 21:34:56,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354782539] [2020-12-21 21:34:56,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-21 21:34:56,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 21:34:56,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-21 21:34:56,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-12-21 21:34:56,688 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand 14 states. [2020-12-21 21:34:56,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 21:34:56,908 INFO L93 Difference]: Finished difference Result 203 states and 226 transitions. [2020-12-21 21:34:56,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-21 21:34:56,909 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 101 [2020-12-21 21:34:56,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 21:34:56,910 INFO L225 Difference]: With dead ends: 203 [2020-12-21 21:34:56,910 INFO L226 Difference]: Without dead ends: 112 [2020-12-21 21:34:56,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-12-21 21:34:56,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-21 21:34:56,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-12-21 21:34:56,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-12-21 21:34:56,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 120 transitions. [2020-12-21 21:34:56,917 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 120 transitions. Word has length 101 [2020-12-21 21:34:56,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 21:34:56,918 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 120 transitions. [2020-12-21 21:34:56,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-21 21:34:56,918 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 120 transitions. [2020-12-21 21:34:56,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-21 21:34:56,919 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 21:34:56,919 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 21:34:57,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 21:34:57,134 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 21:34:57,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 21:34:57,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1734506173, now seen corresponding path program 11 times [2020-12-21 21:34:57,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 21:34:57,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124380247] [2020-12-21 21:34:57,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 21:34:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 21:34:57,314 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2020-12-21 21:34:57,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124380247] [2020-12-21 21:34:57,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494706604] [2020-12-21 21:34:57,315 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 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