/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/egcd3-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:16:57,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:16:57,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:16:57,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 05:16:57,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:16:57,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:16:57,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:16:57,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:16:57,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:16:57,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:16:57,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:16:57,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:16:57,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:16:57,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:16:57,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:16:57,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:16:57,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:16:57,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:16:57,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:16:57,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:16:57,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:16:57,695 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:16:57,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:16:57,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:16:57,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:16:57,699 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:16:57,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:16:57,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:16:57,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:16:57,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:16:57,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:16:57,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:16:57,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:16:57,701 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:16:57,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:16:57,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:16:57,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:16:57,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:16:57,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:16:57,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:16:57,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:16:57,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:16:57,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:16:57,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:16:57,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:16:57,704 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:16:57,704 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:16:58,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:16:58,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:16:58,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:16:58,186 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:16:58,187 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:16:58,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound10.c [2020-12-22 05:16:58,292 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cf8ef868/c470e7b0c7104057bf1eb7d2ddfd335a/FLAG7b6724171 [2020-12-22 05:16:59,042 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:16:59,043 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound10.c [2020-12-22 05:16:59,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cf8ef868/c470e7b0c7104057bf1eb7d2ddfd335a/FLAG7b6724171 [2020-12-22 05:16:59,380 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cf8ef868/c470e7b0c7104057bf1eb7d2ddfd335a [2020-12-22 05:16:59,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:16:59,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:16:59,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:16:59,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:16:59,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:16:59,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:16:59" (1/1) ... [2020-12-22 05:16:59,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67fc14b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:16:59, skipping insertion in model container [2020-12-22 05:16:59,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:16:59" (1/1) ... [2020-12-22 05:16:59,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:16:59,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:16:59,581 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/egcd3-ll_valuebound10.c[490,503] [2020-12-22 05:16:59,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:16:59,613 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:16:59,628 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/egcd3-ll_valuebound10.c[490,503] [2020-12-22 05:16:59,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:16:59,656 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:16:59,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:16:59 WrapperNode [2020-12-22 05:16:59,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:16:59,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:16:59,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:16:59,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:16:59,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:16:59" (1/1) ... [2020-12-22 05:16:59,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:16:59" (1/1) ... [2020-12-22 05:16:59,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:16:59,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:16:59,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:16:59,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:16:59,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:16:59" (1/1) ... [2020-12-22 05:16:59,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:16:59" (1/1) ... [2020-12-22 05:16:59,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:16:59" (1/1) ... [2020-12-22 05:16:59,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:16:59" (1/1) ... [2020-12-22 05:16:59,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:16:59" (1/1) ... [2020-12-22 05:16:59,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:16:59" (1/1) ... [2020-12-22 05:16:59,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:16:59" (1/1) ... [2020-12-22 05:16:59,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:16:59,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:16:59,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:16:59,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:16:59,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:16:59" (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 05:16:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:16:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:16:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:16:59,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:17:00,411 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:17:00,411 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2020-12-22 05:17:00,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:17:00 BoogieIcfgContainer [2020-12-22 05:17:00,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:17:00,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:17:00,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:17:00,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:17:00,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:16:59" (1/3) ... [2020-12-22 05:17:00,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a27192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:17:00, skipping insertion in model container [2020-12-22 05:17:00,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:16:59" (2/3) ... [2020-12-22 05:17:00,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a27192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:17:00, skipping insertion in model container [2020-12-22 05:17:00,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:17:00" (3/3) ... [2020-12-22 05:17:00,434 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound10.c [2020-12-22 05:17:00,442 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:17:00,449 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 05:17:00,471 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 05:17:00,519 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:17:00,520 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:17:00,520 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:17:00,520 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:17:00,520 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:17:00,520 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:17:00,521 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:17:00,521 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:17:00,543 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-22 05:17:00,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 05:17:00,550 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:00,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:17:00,552 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:00,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:00,560 INFO L82 PathProgramCache]: Analyzing trace with hash -174497841, now seen corresponding path program 1 times [2020-12-22 05:17:00,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:00,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790328739] [2020-12-22 05:17:00,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:17:00,814 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 05:17:00,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790328739] [2020-12-22 05:17:00,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:17:00,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:17:00,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746570635] [2020-12-22 05:17:00,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:17:00,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:00,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:17:00,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:17:00,846 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-22 05:17:00,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:00,888 INFO L93 Difference]: Finished difference Result 79 states and 112 transitions. [2020-12-22 05:17:00,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:17:00,889 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-12-22 05:17:00,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:00,908 INFO L225 Difference]: With dead ends: 79 [2020-12-22 05:17:00,909 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 05:17:00,913 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 05:17:00,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 05:17:00,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-22 05:17:00,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 05:17:00,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-22 05:17:00,964 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 14 [2020-12-22 05:17:00,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:00,965 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-22 05:17:00,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:17:00,965 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-22 05:17:00,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:17:00,966 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:00,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:17:00,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:17:00,968 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:00,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:00,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1454170515, now seen corresponding path program 1 times [2020-12-22 05:17:00,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:00,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087455477] [2020-12-22 05:17:00,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:01,034 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:01,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845714891] [2020-12-22 05:17:01,035 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 05:17:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:17:01,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:17:01,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:01,223 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 05:17:01,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087455477] [2020-12-22 05:17:01,224 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:01,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845714891] [2020-12-22 05:17:01,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:17:01,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:17:01,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063895781] [2020-12-22 05:17:01,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:17:01,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:01,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:17:01,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:17:01,228 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2020-12-22 05:17:01,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:01,339 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-12-22 05:17:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:17:01,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-22 05:17:01,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:01,341 INFO L225 Difference]: With dead ends: 64 [2020-12-22 05:17:01,341 INFO L226 Difference]: Without dead ends: 60 [2020-12-22 05:17:01,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 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 05:17:01,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-22 05:17:01,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2020-12-22 05:17:01,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-22 05:17:01,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-22 05:17:01,353 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 15 [2020-12-22 05:17:01,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:01,353 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-22 05:17:01,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:17:01,353 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-22 05:17:01,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 05:17:01,354 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:01,354 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 05:17:01,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:17:01,569 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:01,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:01,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1580206288, now seen corresponding path program 1 times [2020-12-22 05:17:01,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:01,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088671256] [2020-12-22 05:17:01,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:01,593 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:01,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685320874] [2020-12-22 05:17:01,594 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 05:17:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:17:01,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 05:17:01,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:01,918 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 05:17:01,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088671256] [2020-12-22 05:17:01,922 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:01,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685320874] [2020-12-22 05:17:01,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:17:01,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 05:17:01,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240206529] [2020-12-22 05:17:01,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:17:01,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:01,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:17:01,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:17:01,925 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 10 states. [2020-12-22 05:17:02,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:02,236 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2020-12-22 05:17:02,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:17:02,237 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-12-22 05:17:02,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:02,239 INFO L225 Difference]: With dead ends: 60 [2020-12-22 05:17:02,239 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 05:17:02,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:17:02,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 05:17:02,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2020-12-22 05:17:02,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-22 05:17:02,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2020-12-22 05:17:02,250 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 17 [2020-12-22 05:17:02,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:02,251 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2020-12-22 05:17:02,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:17:02,251 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2020-12-22 05:17:02,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 05:17:02,252 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:02,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:17:02,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:17:02,467 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:02,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:02,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1840022701, now seen corresponding path program 1 times [2020-12-22 05:17:02,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:02,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602383336] [2020-12-22 05:17:02,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:02,487 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:02,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472960604] [2020-12-22 05:17:02,488 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 05:17:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:17:02,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:17:02,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:02,705 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 05:17:02,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602383336] [2020-12-22 05:17:02,706 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:02,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472960604] [2020-12-22 05:17:02,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:17:02,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 05:17:02,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621058590] [2020-12-22 05:17:02,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:17:02,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:02,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:17:02,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:17:02,709 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 8 states. [2020-12-22 05:17:03,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:03,063 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-12-22 05:17:03,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:17:03,064 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-12-22 05:17:03,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:03,065 INFO L225 Difference]: With dead ends: 58 [2020-12-22 05:17:03,065 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 05:17:03,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:17:03,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 05:17:03,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2020-12-22 05:17:03,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-22 05:17:03,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-12-22 05:17:03,080 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 19 [2020-12-22 05:17:03,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:03,081 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-12-22 05:17:03,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:17:03,085 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-12-22 05:17:03,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 05:17:03,086 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:03,086 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:17:03,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:17:03,300 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:03,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:03,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1412177226, now seen corresponding path program 1 times [2020-12-22 05:17:03,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:03,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516814168] [2020-12-22 05:17:03,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:03,318 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:03,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1047174399] [2020-12-22 05:17:03,319 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 05:17:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:17:03,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 05:17:03,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:17:03,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516814168] [2020-12-22 05:17:03,458 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:03,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047174399] [2020-12-22 05:17:03,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:17:03,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:17:03,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192281226] [2020-12-22 05:17:03,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:17:03,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:03,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:17:03,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:17:03,461 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 7 states. [2020-12-22 05:17:03,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:03,662 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-12-22 05:17:03,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:17:03,663 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-12-22 05:17:03,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:03,664 INFO L225 Difference]: With dead ends: 140 [2020-12-22 05:17:03,665 INFO L226 Difference]: Without dead ends: 136 [2020-12-22 05:17:03,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:17:03,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-22 05:17:03,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 75. [2020-12-22 05:17:03,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-22 05:17:03,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2020-12-22 05:17:03,680 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 20 [2020-12-22 05:17:03,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:03,681 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2020-12-22 05:17:03,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:17:03,681 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2020-12-22 05:17:03,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 05:17:03,682 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:03,682 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] [2020-12-22 05:17:03,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:17:03,896 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:03,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:03,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1264867958, now seen corresponding path program 1 times [2020-12-22 05:17:03,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:03,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666953352] [2020-12-22 05:17:03,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:03,919 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:03,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [350662932] [2020-12-22 05:17:03,919 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 05:17:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:17:03,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 05:17:03,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:04,084 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 05:17:04,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666953352] [2020-12-22 05:17:04,085 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:04,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350662932] [2020-12-22 05:17:04,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:17:04,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 05:17:04,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662728408] [2020-12-22 05:17:04,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:17:04,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:04,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:17:04,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:17:04,087 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand 8 states. [2020-12-22 05:17:04,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:04,308 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2020-12-22 05:17:04,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:17:04,308 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-12-22 05:17:04,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:04,310 INFO L225 Difference]: With dead ends: 95 [2020-12-22 05:17:04,310 INFO L226 Difference]: Without dead ends: 93 [2020-12-22 05:17:04,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:17:04,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-22 05:17:04,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2020-12-22 05:17:04,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 05:17:04,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2020-12-22 05:17:04,326 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 21 [2020-12-22 05:17:04,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:04,326 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2020-12-22 05:17:04,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:17:04,326 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2020-12-22 05:17:04,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 05:17:04,327 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:04,327 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:17:04,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 05:17:04,542 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:04,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:04,543 INFO L82 PathProgramCache]: Analyzing trace with hash 94063923, now seen corresponding path program 1 times [2020-12-22 05:17:04,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:04,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601511257] [2020-12-22 05:17:04,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:04,561 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:04,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618655349] [2020-12-22 05:17:04,562 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 05:17:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:17:04,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-22 05:17:04,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:04,765 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 05:17:04,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601511257] [2020-12-22 05:17:04,765 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:04,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618655349] [2020-12-22 05:17:04,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:17:04,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:17:04,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159766961] [2020-12-22 05:17:04,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:17:04,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:04,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:17:04,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:17:04,768 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand 9 states. [2020-12-22 05:17:05,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:05,026 INFO L93 Difference]: Finished difference Result 135 states and 160 transitions. [2020-12-22 05:17:05,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:17:05,027 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-22 05:17:05,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:05,029 INFO L225 Difference]: With dead ends: 135 [2020-12-22 05:17:05,029 INFO L226 Difference]: Without dead ends: 133 [2020-12-22 05:17:05,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:17:05,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-12-22 05:17:05,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 116. [2020-12-22 05:17:05,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-22 05:17:05,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2020-12-22 05:17:05,053 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 146 transitions. Word has length 22 [2020-12-22 05:17:05,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:05,053 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 146 transitions. [2020-12-22 05:17:05,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:17:05,053 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 146 transitions. [2020-12-22 05:17:05,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 05:17:05,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:05,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:17:05,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:17:05,265 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:05,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:05,266 INFO L82 PathProgramCache]: Analyzing trace with hash 62520889, now seen corresponding path program 1 times [2020-12-22 05:17:05,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:05,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918927057] [2020-12-22 05:17:05,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:05,298 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:05,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030804333] [2020-12-22 05:17:05,299 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 05:17:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:17:05,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 05:17:05,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:05,424 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 05:17:05,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918927057] [2020-12-22 05:17:05,424 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:05,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030804333] [2020-12-22 05:17:05,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:17:05,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:17:05,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584308119] [2020-12-22 05:17:05,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:17:05,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:05,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:17:05,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:17:05,437 INFO L87 Difference]: Start difference. First operand 116 states and 146 transitions. Second operand 5 states. [2020-12-22 05:17:05,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:05,576 INFO L93 Difference]: Finished difference Result 226 states and 287 transitions. [2020-12-22 05:17:05,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:17:05,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-12-22 05:17:05,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:05,583 INFO L225 Difference]: With dead ends: 226 [2020-12-22 05:17:05,583 INFO L226 Difference]: Without dead ends: 224 [2020-12-22 05:17:05,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:17:05,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-12-22 05:17:05,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 164. [2020-12-22 05:17:05,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-12-22 05:17:05,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 205 transitions. [2020-12-22 05:17:05,651 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 205 transitions. Word has length 23 [2020-12-22 05:17:05,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:05,651 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 205 transitions. [2020-12-22 05:17:05,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:17:05,651 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 205 transitions. [2020-12-22 05:17:05,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 05:17:05,658 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:05,659 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:17:05,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:17:05,872 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:05,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:05,873 INFO L82 PathProgramCache]: Analyzing trace with hash 201274102, now seen corresponding path program 1 times [2020-12-22 05:17:05,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:05,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814745048] [2020-12-22 05:17:05,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:05,891 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:05,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446521480] [2020-12-22 05:17:05,892 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 05:17:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:17:05,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 05:17:05,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:06,111 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 05:17:06,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814745048] [2020-12-22 05:17:06,112 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:06,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446521480] [2020-12-22 05:17:06,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:17:06,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:17:06,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127997912] [2020-12-22 05:17:06,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:17:06,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:06,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:17:06,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:17:06,114 INFO L87 Difference]: Start difference. First operand 164 states and 205 transitions. Second operand 8 states. [2020-12-22 05:17:06,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:06,437 INFO L93 Difference]: Finished difference Result 179 states and 214 transitions. [2020-12-22 05:17:06,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:17:06,437 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-12-22 05:17:06,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:06,439 INFO L225 Difference]: With dead ends: 179 [2020-12-22 05:17:06,439 INFO L226 Difference]: Without dead ends: 177 [2020-12-22 05:17:06,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:17:06,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-12-22 05:17:06,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 164. [2020-12-22 05:17:06,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-12-22 05:17:06,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 203 transitions. [2020-12-22 05:17:06,462 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 203 transitions. Word has length 24 [2020-12-22 05:17:06,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:06,463 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 203 transitions. [2020-12-22 05:17:06,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:17:06,463 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 203 transitions. [2020-12-22 05:17:06,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 05:17:06,464 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:06,464 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:17:06,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 05:17:06,684 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:06,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:06,685 INFO L82 PathProgramCache]: Analyzing trace with hash 151041369, now seen corresponding path program 1 times [2020-12-22 05:17:06,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:06,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814474923] [2020-12-22 05:17:06,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:06,713 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:06,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574515644] [2020-12-22 05:17:06,713 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 05:17:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:17:06,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 05:17:06,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:06,903 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 05:17:06,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814474923] [2020-12-22 05:17:06,903 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:06,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574515644] [2020-12-22 05:17:06,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:17:06,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:17:06,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052983040] [2020-12-22 05:17:06,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:17:06,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:06,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:17:06,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:17:06,905 INFO L87 Difference]: Start difference. First operand 164 states and 203 transitions. Second operand 11 states. [2020-12-22 05:17:07,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:07,335 INFO L93 Difference]: Finished difference Result 277 states and 328 transitions. [2020-12-22 05:17:07,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:17:07,336 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-12-22 05:17:07,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:07,338 INFO L225 Difference]: With dead ends: 277 [2020-12-22 05:17:07,339 INFO L226 Difference]: Without dead ends: 275 [2020-12-22 05:17:07,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:17:07,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-12-22 05:17:07,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 198. [2020-12-22 05:17:07,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-12-22 05:17:07,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 245 transitions. [2020-12-22 05:17:07,368 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 245 transitions. Word has length 26 [2020-12-22 05:17:07,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:07,369 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 245 transitions. [2020-12-22 05:17:07,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:17:07,369 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 245 transitions. [2020-12-22 05:17:07,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:17:07,370 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:07,370 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:17:07,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:17:07,586 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:07,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:07,587 INFO L82 PathProgramCache]: Analyzing trace with hash -74821968, now seen corresponding path program 2 times [2020-12-22 05:17:07,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:07,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510240200] [2020-12-22 05:17:07,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:07,601 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:07,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562910457] [2020-12-22 05:17:07,602 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 05:17:07,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:17:07,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:17:07,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:17:07,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:07,722 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:17:07,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510240200] [2020-12-22 05:17:07,722 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:07,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562910457] [2020-12-22 05:17:07,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:17:07,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:17:07,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529254302] [2020-12-22 05:17:07,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:17:07,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:07,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:17:07,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:17:07,725 INFO L87 Difference]: Start difference. First operand 198 states and 245 transitions. Second operand 5 states. [2020-12-22 05:17:07,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:07,832 INFO L93 Difference]: Finished difference Result 291 states and 355 transitions. [2020-12-22 05:17:07,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:17:07,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-12-22 05:17:07,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:07,835 INFO L225 Difference]: With dead ends: 291 [2020-12-22 05:17:07,835 INFO L226 Difference]: Without dead ends: 209 [2020-12-22 05:17:07,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:17:07,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-12-22 05:17:07,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 155. [2020-12-22 05:17:07,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-12-22 05:17:07,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 183 transitions. [2020-12-22 05:17:07,857 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 183 transitions. Word has length 27 [2020-12-22 05:17:07,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:07,857 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 183 transitions. [2020-12-22 05:17:07,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:17:07,857 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 183 transitions. [2020-12-22 05:17:07,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 05:17:07,858 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:07,858 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:17:08,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:17:08,073 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:08,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:08,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1112899551, now seen corresponding path program 1 times [2020-12-22 05:17:08,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:08,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321927051] [2020-12-22 05:17:08,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:08,086 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:08,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788589349] [2020-12-22 05:17:08,087 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 05:17:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:17:08,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 62 conjunts are in the unsatisfiable core [2020-12-22 05:17:08,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:08,561 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 05:17:08,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321927051] [2020-12-22 05:17:08,561 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:08,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788589349] [2020-12-22 05:17:08,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:17:08,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 05:17:08,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939814137] [2020-12-22 05:17:08,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:17:08,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:08,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:17:08,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:17:08,564 INFO L87 Difference]: Start difference. First operand 155 states and 183 transitions. Second operand 13 states. [2020-12-22 05:17:09,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:09,328 INFO L93 Difference]: Finished difference Result 282 states and 333 transitions. [2020-12-22 05:17:09,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 05:17:09,329 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-12-22 05:17:09,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:09,330 INFO L225 Difference]: With dead ends: 282 [2020-12-22 05:17:09,330 INFO L226 Difference]: Without dead ends: 198 [2020-12-22 05:17:09,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2020-12-22 05:17:09,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-12-22 05:17:09,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 164. [2020-12-22 05:17:09,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-12-22 05:17:09,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 193 transitions. [2020-12-22 05:17:09,376 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 193 transitions. Word has length 32 [2020-12-22 05:17:09,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:09,377 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 193 transitions. [2020-12-22 05:17:09,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:17:09,377 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 193 transitions. [2020-12-22 05:17:09,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 05:17:09,377 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:09,378 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:17:09,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 05:17:09,592 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:09,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:09,592 INFO L82 PathProgramCache]: Analyzing trace with hash -986732336, now seen corresponding path program 1 times [2020-12-22 05:17:09,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:09,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45827577] [2020-12-22 05:17:09,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:09,606 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:09,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [264412821] [2020-12-22 05:17:09,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 05:17:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:17:09,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 05:17:09,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:09,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:17:09,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45827577] [2020-12-22 05:17:09,796 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:09,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264412821] [2020-12-22 05:17:09,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:17:09,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:17:09,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40522972] [2020-12-22 05:17:09,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:17:09,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:09,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:17:09,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:17:09,798 INFO L87 Difference]: Start difference. First operand 164 states and 193 transitions. Second operand 9 states. [2020-12-22 05:17:10,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:10,229 INFO L93 Difference]: Finished difference Result 211 states and 244 transitions. [2020-12-22 05:17:10,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:17:10,230 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-12-22 05:17:10,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:10,231 INFO L225 Difference]: With dead ends: 211 [2020-12-22 05:17:10,231 INFO L226 Difference]: Without dead ends: 209 [2020-12-22 05:17:10,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:17:10,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-12-22 05:17:10,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 181. [2020-12-22 05:17:10,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-12-22 05:17:10,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 212 transitions. [2020-12-22 05:17:10,256 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 212 transitions. Word has length 32 [2020-12-22 05:17:10,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:10,257 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 212 transitions. [2020-12-22 05:17:10,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:17:10,257 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 212 transitions. [2020-12-22 05:17:10,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:17:10,257 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:10,258 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:17:10,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 05:17:10,471 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:10,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:10,472 INFO L82 PathProgramCache]: Analyzing trace with hash -315127458, now seen corresponding path program 2 times [2020-12-22 05:17:10,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:10,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500160785] [2020-12-22 05:17:10,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:10,484 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:10,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310212046] [2020-12-22 05:17:10,485 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 05:17:10,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:17:10,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:17:10,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 05:17:10,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:17:10,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500160785] [2020-12-22 05:17:10,650 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:10,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310212046] [2020-12-22 05:17:10,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:17:10,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:17:10,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258379244] [2020-12-22 05:17:10,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:17:10,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:10,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:17:10,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:17:10,652 INFO L87 Difference]: Start difference. First operand 181 states and 212 transitions. Second operand 8 states. [2020-12-22 05:17:11,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:11,056 INFO L93 Difference]: Finished difference Result 402 states and 471 transitions. [2020-12-22 05:17:11,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:17:11,057 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-12-22 05:17:11,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:11,060 INFO L225 Difference]: With dead ends: 402 [2020-12-22 05:17:11,060 INFO L226 Difference]: Without dead ends: 398 [2020-12-22 05:17:11,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:17:11,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-12-22 05:17:11,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 221. [2020-12-22 05:17:11,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-12-22 05:17:11,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 265 transitions. [2020-12-22 05:17:11,094 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 265 transitions. Word has length 37 [2020-12-22 05:17:11,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:11,094 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 265 transitions. [2020-12-22 05:17:11,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:17:11,094 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 265 transitions. [2020-12-22 05:17:11,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:17:11,095 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:11,095 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:17:11,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 05:17:11,308 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:11,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:11,308 INFO L82 PathProgramCache]: Analyzing trace with hash -188960243, now seen corresponding path program 1 times [2020-12-22 05:17:11,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:11,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71233742] [2020-12-22 05:17:11,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:11,319 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:11,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821781354] [2020-12-22 05:17:11,320 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 05:17:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:17:11,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 05:17:11,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:11,577 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 05:17:11,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71233742] [2020-12-22 05:17:11,577 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:11,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821781354] [2020-12-22 05:17:11,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:17:11,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 05:17:11,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474045285] [2020-12-22 05:17:11,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:17:11,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:11,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:17:11,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:17:11,580 INFO L87 Difference]: Start difference. First operand 221 states and 265 transitions. Second operand 12 states. [2020-12-22 05:17:12,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:12,307 INFO L93 Difference]: Finished difference Result 363 states and 428 transitions. [2020-12-22 05:17:12,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 05:17:12,308 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-12-22 05:17:12,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:12,312 INFO L225 Difference]: With dead ends: 363 [2020-12-22 05:17:12,312 INFO L226 Difference]: Without dead ends: 361 [2020-12-22 05:17:12,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2020-12-22 05:17:12,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-12-22 05:17:12,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 261. [2020-12-22 05:17:12,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-12-22 05:17:12,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 313 transitions. [2020-12-22 05:17:12,355 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 313 transitions. Word has length 37 [2020-12-22 05:17:12,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:12,355 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 313 transitions. [2020-12-22 05:17:12,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:17:12,355 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 313 transitions. [2020-12-22 05:17:12,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 05:17:12,356 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:12,356 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 05:17:12,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:17:12,566 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:12,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:12,566 INFO L82 PathProgramCache]: Analyzing trace with hash 913672398, now seen corresponding path program 1 times [2020-12-22 05:17:12,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:12,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317463128] [2020-12-22 05:17:12,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:12,577 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:12,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1844759453] [2020-12-22 05:17:12,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 05:17:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:17:12,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 05:17:12,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:12,703 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 05:17:12,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317463128] [2020-12-22 05:17:12,704 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:12,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844759453] [2020-12-22 05:17:12,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:17:12,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:17:12,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086781654] [2020-12-22 05:17:12,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:17:12,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:12,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:17:12,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:17:12,706 INFO L87 Difference]: Start difference. First operand 261 states and 313 transitions. Second operand 5 states. [2020-12-22 05:17:12,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:12,814 INFO L93 Difference]: Finished difference Result 454 states and 552 transitions. [2020-12-22 05:17:12,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:17:12,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-22 05:17:12,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:12,817 INFO L225 Difference]: With dead ends: 454 [2020-12-22 05:17:12,817 INFO L226 Difference]: Without dead ends: 287 [2020-12-22 05:17:12,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:17:12,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-22 05:17:12,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 261. [2020-12-22 05:17:12,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-12-22 05:17:12,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 312 transitions. [2020-12-22 05:17:12,877 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 312 transitions. Word has length 38 [2020-12-22 05:17:12,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:12,877 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 312 transitions. [2020-12-22 05:17:12,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:17:12,877 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 312 transitions. [2020-12-22 05:17:12,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 05:17:12,878 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:12,878 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 05:17:13,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 05:17:13,092 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:13,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:13,093 INFO L82 PathProgramCache]: Analyzing trace with hash 820532868, now seen corresponding path program 2 times [2020-12-22 05:17:13,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:13,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548865935] [2020-12-22 05:17:13,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:13,104 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:13,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [130981665] [2020-12-22 05:17:13,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:17:13,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 05:17:13,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:17:13,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 05:17:13,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:13,227 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 05:17:13,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548865935] [2020-12-22 05:17:13,228 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:13,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130981665] [2020-12-22 05:17:13,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:17:13,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:17:13,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648438702] [2020-12-22 05:17:13,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:17:13,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:13,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:17:13,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:17:13,230 INFO L87 Difference]: Start difference. First operand 261 states and 312 transitions. Second operand 5 states. [2020-12-22 05:17:13,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:13,390 INFO L93 Difference]: Finished difference Result 301 states and 360 transitions. [2020-12-22 05:17:13,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:17:13,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-22 05:17:13,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:13,393 INFO L225 Difference]: With dead ends: 301 [2020-12-22 05:17:13,393 INFO L226 Difference]: Without dead ends: 299 [2020-12-22 05:17:13,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 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 05:17:13,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-12-22 05:17:13,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 288. [2020-12-22 05:17:13,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-12-22 05:17:13,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 345 transitions. [2020-12-22 05:17:13,440 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 345 transitions. Word has length 38 [2020-12-22 05:17:13,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:13,440 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 345 transitions. [2020-12-22 05:17:13,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:17:13,441 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 345 transitions. [2020-12-22 05:17:13,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 05:17:13,441 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:13,441 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2020-12-22 05:17:13,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 05:17:13,657 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:13,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:13,658 INFO L82 PathProgramCache]: Analyzing trace with hash 2091903451, now seen corresponding path program 1 times [2020-12-22 05:17:13,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:13,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103225862] [2020-12-22 05:17:13,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:13,675 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:13,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73242346] [2020-12-22 05:17:13,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 05:17:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:17:13,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-22 05:17:13,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:14,133 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:17:14,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103225862] [2020-12-22 05:17:14,133 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:14,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73242346] [2020-12-22 05:17:14,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:17:14,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-22 05:17:14,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313859450] [2020-12-22 05:17:14,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 05:17:14,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:14,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 05:17:14,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:17:14,136 INFO L87 Difference]: Start difference. First operand 288 states and 345 transitions. Second operand 15 states. [2020-12-22 05:17:16,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:16,735 INFO L93 Difference]: Finished difference Result 450 states and 519 transitions. [2020-12-22 05:17:16,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-12-22 05:17:16,735 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2020-12-22 05:17:16,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:16,738 INFO L225 Difference]: With dead ends: 450 [2020-12-22 05:17:16,738 INFO L226 Difference]: Without dead ends: 448 [2020-12-22 05:17:16,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=578, Invalid=2178, Unknown=0, NotChecked=0, Total=2756 [2020-12-22 05:17:16,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-12-22 05:17:16,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 382. [2020-12-22 05:17:16,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-12-22 05:17:16,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 470 transitions. [2020-12-22 05:17:16,800 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 470 transitions. Word has length 39 [2020-12-22 05:17:16,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:16,800 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 470 transitions. [2020-12-22 05:17:16,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 05:17:16,801 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 470 transitions. [2020-12-22 05:17:16,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 05:17:16,801 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:16,802 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2020-12-22 05:17:17,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 05:17:17,016 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:17,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:17,016 INFO L82 PathProgramCache]: Analyzing trace with hash 274679198, now seen corresponding path program 1 times [2020-12-22 05:17:17,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:17,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679206564] [2020-12-22 05:17:17,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:17,039 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:17,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30082906] [2020-12-22 05:17:17,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 05:17:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:17:17,116 WARN L261 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 86 conjunts are in the unsatisfiable core [2020-12-22 05:17:17,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:17,952 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:17:17,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679206564] [2020-12-22 05:17:17,952 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:17,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30082906] [2020-12-22 05:17:17,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:17:17,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-12-22 05:17:17,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548358129] [2020-12-22 05:17:17,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 05:17:17,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:17,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 05:17:17,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-12-22 05:17:17,954 INFO L87 Difference]: Start difference. First operand 382 states and 470 transitions. Second operand 20 states. [2020-12-22 05:17:19,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:19,535 INFO L93 Difference]: Finished difference Result 461 states and 553 transitions. [2020-12-22 05:17:19,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 05:17:19,536 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 41 [2020-12-22 05:17:19,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:19,539 INFO L225 Difference]: With dead ends: 461 [2020-12-22 05:17:19,539 INFO L226 Difference]: Without dead ends: 459 [2020-12-22 05:17:19,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 05:17:19,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-12-22 05:17:19,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 429. [2020-12-22 05:17:19,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-12-22 05:17:19,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 526 transitions. [2020-12-22 05:17:19,602 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 526 transitions. Word has length 41 [2020-12-22 05:17:19,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:19,602 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 526 transitions. [2020-12-22 05:17:19,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-22 05:17:19,602 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 526 transitions. [2020-12-22 05:17:19,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 05:17:19,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:19,603 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:17:19,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:17:19,818 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:19,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:19,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1404711062, now seen corresponding path program 1 times [2020-12-22 05:17:19,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:19,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887158928] [2020-12-22 05:17:19,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:19,828 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:19,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360898106] [2020-12-22 05:17:19,829 INFO L95 rtionOrderModulation]: Keeping assertion order 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 05:17:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:17:19,908 WARN L261 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 86 conjunts are in the unsatisfiable core [2020-12-22 05:17:19,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:20,866 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:17:20,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887158928] [2020-12-22 05:17:20,867 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:20,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360898106] [2020-12-22 05:17:20,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:17:20,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-12-22 05:17:20,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890887566] [2020-12-22 05:17:20,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 05:17:20,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:20,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 05:17:20,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:17:20,871 INFO L87 Difference]: Start difference. First operand 429 states and 526 transitions. Second operand 19 states. [2020-12-22 05:17:21,374 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-12-22 05:17:22,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:22,317 INFO L93 Difference]: Finished difference Result 535 states and 645 transitions. [2020-12-22 05:17:22,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 05:17:22,318 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 41 [2020-12-22 05:17:22,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:22,322 INFO L225 Difference]: With dead ends: 535 [2020-12-22 05:17:22,323 INFO L226 Difference]: Without dead ends: 527 [2020-12-22 05:17:22,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=172, Invalid=758, Unknown=0, NotChecked=0, Total=930 [2020-12-22 05:17:22,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-12-22 05:17:22,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 450. [2020-12-22 05:17:22,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-12-22 05:17:22,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 550 transitions. [2020-12-22 05:17:22,392 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 550 transitions. Word has length 41 [2020-12-22 05:17:22,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:22,392 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 550 transitions. [2020-12-22 05:17:22,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 05:17:22,392 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 550 transitions. [2020-12-22 05:17:22,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 05:17:22,393 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:22,393 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:17:22,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:17:22,606 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:22,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:22,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1278543847, now seen corresponding path program 2 times [2020-12-22 05:17:22,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:22,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755469604] [2020-12-22 05:17:22,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:22,616 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:22,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927607471] [2020-12-22 05:17:22,617 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 05:17:22,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:17:22,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:17:22,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-22 05:17:22,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:22,884 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:17:22,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755469604] [2020-12-22 05:17:22,884 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:22,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927607471] [2020-12-22 05:17:22,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:17:22,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:17:22,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366199243] [2020-12-22 05:17:22,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:17:22,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:22,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:17:22,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:17:22,886 INFO L87 Difference]: Start difference. First operand 450 states and 550 transitions. Second operand 11 states. [2020-12-22 05:17:23,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:23,634 INFO L93 Difference]: Finished difference Result 501 states and 605 transitions. [2020-12-22 05:17:23,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:17:23,635 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-12-22 05:17:23,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:23,637 INFO L225 Difference]: With dead ends: 501 [2020-12-22 05:17:23,637 INFO L226 Difference]: Without dead ends: 499 [2020-12-22 05:17:23,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-12-22 05:17:23,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-12-22 05:17:23,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 468. [2020-12-22 05:17:23,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-12-22 05:17:23,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 571 transitions. [2020-12-22 05:17:23,717 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 571 transitions. Word has length 41 [2020-12-22 05:17:23,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:23,717 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 571 transitions. [2020-12-22 05:17:23,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:17:23,717 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 571 transitions. [2020-12-22 05:17:23,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 05:17:23,718 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:23,718 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:17:23,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-22 05:17:23,924 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:23,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:23,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1976752845, now seen corresponding path program 2 times [2020-12-22 05:17:23,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:23,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620094048] [2020-12-22 05:17:23,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:23,935 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:23,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1688083864] [2020-12-22 05:17:23,936 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 05:17:24,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:17:24,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:17:24,008 WARN L261 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 93 conjunts are in the unsatisfiable core [2020-12-22 05:17:24,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:24,769 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:17:24,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620094048] [2020-12-22 05:17:24,769 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:24,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688083864] [2020-12-22 05:17:24,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:17:24,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-12-22 05:17:24,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779618388] [2020-12-22 05:17:24,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 05:17:24,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:24,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 05:17:24,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:17:24,771 INFO L87 Difference]: Start difference. First operand 468 states and 571 transitions. Second operand 17 states. [2020-12-22 05:17:26,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:26,368 INFO L93 Difference]: Finished difference Result 604 states and 722 transitions. [2020-12-22 05:17:26,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 05:17:26,370 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2020-12-22 05:17:26,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:26,373 INFO L225 Difference]: With dead ends: 604 [2020-12-22 05:17:26,374 INFO L226 Difference]: Without dead ends: 594 [2020-12-22 05:17:26,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=176, Invalid=946, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 05:17:26,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2020-12-22 05:17:26,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 489. [2020-12-22 05:17:26,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-12-22 05:17:26,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 595 transitions. [2020-12-22 05:17:26,461 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 595 transitions. Word has length 46 [2020-12-22 05:17:26,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:26,461 INFO L481 AbstractCegarLoop]: Abstraction has 489 states and 595 transitions. [2020-12-22 05:17:26,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 05:17:26,461 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 595 transitions. [2020-12-22 05:17:26,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 05:17:26,462 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:26,462 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:17:26,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 05:17:26,676 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:26,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:26,677 INFO L82 PathProgramCache]: Analyzing trace with hash 2102920060, now seen corresponding path program 2 times [2020-12-22 05:17:26,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:26,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436343915] [2020-12-22 05:17:26,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:26,695 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:26,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1242443659] [2020-12-22 05:17:26,697 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:17:26,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:17:26,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:17:26,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 42 conjunts are in the unsatisfiable core [2020-12-22 05:17:26,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:27,202 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:17:27,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436343915] [2020-12-22 05:17:27,203 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:27,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242443659] [2020-12-22 05:17:27,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:17:27,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-12-22 05:17:27,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316696466] [2020-12-22 05:17:27,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 05:17:27,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:27,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 05:17:27,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:17:27,205 INFO L87 Difference]: Start difference. First operand 489 states and 595 transitions. Second operand 17 states. [2020-12-22 05:17:34,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:34,483 INFO L93 Difference]: Finished difference Result 633 states and 755 transitions. [2020-12-22 05:17:34,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 05:17:34,484 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2020-12-22 05:17:34,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:34,487 INFO L225 Difference]: With dead ends: 633 [2020-12-22 05:17:34,487 INFO L226 Difference]: Without dead ends: 629 [2020-12-22 05:17:34,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=301, Invalid=1105, Unknown=0, NotChecked=0, Total=1406 [2020-12-22 05:17:34,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-12-22 05:17:34,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 507. [2020-12-22 05:17:34,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-12-22 05:17:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 615 transitions. [2020-12-22 05:17:34,590 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 615 transitions. Word has length 46 [2020-12-22 05:17:34,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:34,591 INFO L481 AbstractCegarLoop]: Abstraction has 507 states and 615 transitions. [2020-12-22 05:17:34,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 05:17:34,591 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 615 transitions. [2020-12-22 05:17:34,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 05:17:34,592 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:34,592 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:17:34,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:17:34,805 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:34,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:34,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1437779966, now seen corresponding path program 1 times [2020-12-22 05:17:34,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:34,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366645051] [2020-12-22 05:17:34,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:34,815 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:34,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1027430518] [2020-12-22 05:17:34,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:17:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:17:34,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-22 05:17:34,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:35,104 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:17:35,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366645051] [2020-12-22 05:17:35,104 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:35,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027430518] [2020-12-22 05:17:35,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:17:35,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 05:17:35,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288260635] [2020-12-22 05:17:35,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:17:35,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:35,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:17:35,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:17:35,106 INFO L87 Difference]: Start difference. First operand 507 states and 615 transitions. Second operand 13 states. [2020-12-22 05:17:36,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:36,199 INFO L93 Difference]: Finished difference Result 723 states and 875 transitions. [2020-12-22 05:17:36,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 05:17:36,200 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-12-22 05:17:36,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:36,204 INFO L225 Difference]: With dead ends: 723 [2020-12-22 05:17:36,204 INFO L226 Difference]: Without dead ends: 721 [2020-12-22 05:17:36,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=296, Invalid=826, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 05:17:36,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2020-12-22 05:17:36,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 603. [2020-12-22 05:17:36,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-12-22 05:17:36,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 729 transitions. [2020-12-22 05:17:36,317 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 729 transitions. Word has length 49 [2020-12-22 05:17:36,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:36,317 INFO L481 AbstractCegarLoop]: Abstraction has 603 states and 729 transitions. [2020-12-22 05:17:36,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:17:36,317 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 729 transitions. [2020-12-22 05:17:36,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 05:17:36,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:36,318 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:17:36,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-22 05:17:36,533 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:36,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:36,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1323606593, now seen corresponding path program 3 times [2020-12-22 05:17:36,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:36,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696962933] [2020-12-22 05:17:36,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:36,543 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:36,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927042757] [2020-12-22 05:17:36,543 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:17:36,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 05:17:36,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:17:36,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 63 conjunts are in the unsatisfiable core [2020-12-22 05:17:36,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:36,983 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 05:17:36,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696962933] [2020-12-22 05:17:36,984 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:36,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927042757] [2020-12-22 05:17:36,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:17:36,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 05:17:36,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979015766] [2020-12-22 05:17:36,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:17:36,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:36,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:17:36,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:17:36,985 INFO L87 Difference]: Start difference. First operand 603 states and 729 transitions. Second operand 12 states. [2020-12-22 05:17:41,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:17:41,922 INFO L93 Difference]: Finished difference Result 752 states and 897 transitions. [2020-12-22 05:17:41,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:17:41,923 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-12-22 05:17:41,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:17:41,927 INFO L225 Difference]: With dead ends: 752 [2020-12-22 05:17:41,927 INFO L226 Difference]: Without dead ends: 744 [2020-12-22 05:17:41,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-12-22 05:17:41,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2020-12-22 05:17:42,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 620. [2020-12-22 05:17:42,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2020-12-22 05:17:42,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 748 transitions. [2020-12-22 05:17:42,053 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 748 transitions. Word has length 50 [2020-12-22 05:17:42,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:17:42,054 INFO L481 AbstractCegarLoop]: Abstraction has 620 states and 748 transitions. [2020-12-22 05:17:42,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:17:42,054 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 748 transitions. [2020-12-22 05:17:42,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 05:17:42,055 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:17:42,055 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:17:42,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:17:42,269 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:17:42,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:17:42,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1449773808, now seen corresponding path program 3 times [2020-12-22 05:17:42,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:17:42,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685452464] [2020-12-22 05:17:42,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:17:42,279 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:17:42,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115565765] [2020-12-22 05:17:42,279 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:17:42,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 05:17:42,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:17:42,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:17:42,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:17:44,719 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 05:17:44,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685452464] [2020-12-22 05:17:44,720 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:17:44,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115565765] [2020-12-22 05:17:44,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:17:44,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:17:44,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162855787] [2020-12-22 05:17:44,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:17:44,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:17:44,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:17:44,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=40, Unknown=1, NotChecked=0, Total=56 [2020-12-22 05:17:44,724 INFO L87 Difference]: Start difference. First operand 620 states and 748 transitions. Second operand 8 states. [2020-12-22 05:19:18,486 WARN L197 SmtUtils]: Spent 18.86 s on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2020-12-22 05:19:54,794 WARN L197 SmtUtils]: Spent 18.11 s on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2020-12-22 05:20:20,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:20:20,531 INFO L93 Difference]: Finished difference Result 635 states and 758 transitions. [2020-12-22 05:20:20,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 05:20:20,549 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-12-22 05:20:20,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:20:20,552 INFO L225 Difference]: With dead ends: 635 [2020-12-22 05:20:20,552 INFO L226 Difference]: Without dead ends: 633 [2020-12-22 05:20:20,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 89.7s TimeCoverageRelationStatistics Valid=102, Invalid=217, Unknown=23, NotChecked=0, Total=342 [2020-12-22 05:20:20,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-12-22 05:20:20,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 443. [2020-12-22 05:20:20,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-12-22 05:20:20,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 529 transitions. [2020-12-22 05:20:20,651 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 529 transitions. Word has length 50 [2020-12-22 05:20:20,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:20:20,652 INFO L481 AbstractCegarLoop]: Abstraction has 443 states and 529 transitions. [2020-12-22 05:20:20,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:20:20,652 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 529 transitions. [2020-12-22 05:20:20,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 05:20:20,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:20:20,653 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:20:20,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-22 05:20:20,870 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:20:20,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:20:20,870 INFO L82 PathProgramCache]: Analyzing trace with hash 272025232, now seen corresponding path program 2 times [2020-12-22 05:20:20,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:20:20,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345897248] [2020-12-22 05:20:20,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:20:20,880 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:20:20,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622647245] [2020-12-22 05:20:20,880 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:20:20,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:20:20,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:20:20,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-22 05:20:20,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:20:21,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345897248] [2020-12-22 05:20:21,733 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:20:21,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622647245] [2020-12-22 05:20:21,733 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-22 05:20:21,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:20:21,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:20:21,733 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:20:21,734 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:20:21,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 05:20:21,973 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:20:21,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:20:21 BoogieIcfgContainer [2020-12-22 05:20:21,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:20:21,975 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:20:21,975 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:20:21,975 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:20:21,976 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:17:00" (3/4) ... [2020-12-22 05:20:21,980 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:20:21,980 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:20:21,981 INFO L168 Benchmark]: Toolchain (without parser) took 202595.35 ms. Allocated memory was 151.0 MB in the beginning and 331.4 MB in the end (delta: 180.4 MB). Free memory was 126.5 MB in the beginning and 197.8 MB in the end (delta: -71.2 MB). Peak memory consumption was 110.3 MB. Max. memory is 8.0 GB. [2020-12-22 05:20:21,982 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:20:21,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.56 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 116.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:20:21,985 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.21 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:20:21,986 INFO L168 Benchmark]: Boogie Preprocessor took 29.81 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 113.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:20:21,986 INFO L168 Benchmark]: RCFGBuilder took 686.13 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 128.0 MB in the end (delta: -14.6 MB). Peak memory consumption was 14.9 MB. Max. memory is 8.0 GB. [2020-12-22 05:20:21,987 INFO L168 Benchmark]: TraceAbstraction took 201553.60 ms. Allocated memory was 151.0 MB in the beginning and 331.4 MB in the end (delta: 180.4 MB). Free memory was 127.5 MB in the beginning and 197.8 MB in the end (delta: -70.3 MB). Peak memory consumption was 111.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:20:21,987 INFO L168 Benchmark]: Witness Printer took 5.22 ms. Allocated memory is still 331.4 MB. Free memory is still 197.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:20:21,989 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 268.56 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 116.4 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 43.21 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.81 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 113.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 686.13 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 128.0 MB in the end (delta: -14.6 MB). Peak memory consumption was 14.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 201553.60 ms. Allocated memory was 151.0 MB in the beginning and 331.4 MB in the end (delta: 180.4 MB). Free memory was 127.5 MB in the beginning and 197.8 MB in the end (delta: -70.3 MB). Peak memory consumption was 111.1 MB. Max. memory is 8.0 GB. * Witness Printer took 5.22 ms. Allocated memory is still 331.4 MB. Free memory is still 197.8 MB. 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] int x, y; [L20] long long a, b, p, q, r, s; [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 [L36] COND FALSE !(!(b != 0)) [L38] long long c, k; [L39] c = a [L40] k = 0 [L42] COND TRUE 1 [L43] COND FALSE !(!(c >= b)) [L45] long long d, v; [L46] d = 1 [L47] v = b [L49] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L55] COND TRUE !(c >= 2 * v) [L60] c = c - v [L61] k = k + d [L42] COND TRUE 1 [L43] COND TRUE !(c >= b) [L64] a = b [L65] b = c [L66] long long temp; [L67] temp = p [L68] p = q [L69] q = temp - q * k [L70] temp = r [L71] r = s [L72] s = temp - s * k [L35] COND TRUE 1 [L36] COND FALSE !(!(b != 0)) [L38] long long c, k; [L39] c = a [L40] k = 0 [L42] COND TRUE 1 [L43] COND FALSE !(!(c >= b)) [L45] long long d, v; [L46] d = 1 [L47] v = b [L49] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L55] COND TRUE !(c >= 2 * v) [L60] c = c - v [L61] k = k + d [L42] COND TRUE 1 [L43] COND TRUE !(c >= b) [L64] a = b [L65] b = c [L66] long long temp; [L67] temp = p [L68] p = q [L69] q = temp - q * k [L70] temp = r [L71] r = s [L72] s = temp - s * k [L35] COND TRUE 1 [L36] COND FALSE !(!(b != 0)) [L38] long long c, k; [L39] c = a [L40] k = 0 [L42] COND TRUE 1 [L43] COND FALSE !(!(c >= b)) [L45] long long d, v; [L46] d = 1 [L47] v = b [L49] COND TRUE 1 [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 201.4s, OverallIterations: 27, TraceHistogramMax: 5, AutomataDifference: 182.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 991 SDtfs, 4133 SDslu, 4128 SDs, 0 SdLazy, 5870 SolverSat, 720 SolverUnsat, 37 SolverUnknown, 0 SolverNotchecked, 82.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1075 GetRequests, 620 SyntacticMatches, 4 SemanticMatches, 451 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2371 ImplicationChecksByTransitivity, 102.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=620occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 26 MinimizatonAttempts, 1563 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 845 NumberOfCodeBlocks, 792 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 819 ConstructedInterpolants, 0 QuantifiedInterpolants, 342858 SizeOfPredicates, 322 NumberOfNonLiveVariables, 3338 ConjunctsInSsa, 833 ConjunctsInUnsatCore, 26 InterpolantComputations, 9 PerfectInterpolantSequences, 86/340 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...