/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/hard-u_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:29:59,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:29:59,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:29:59,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 05:29:59,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:29:59,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:29:59,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:29:59,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:29:59,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:29:59,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:29:59,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:29:59,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:29:59,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:29:59,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:29:59,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:29:59,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:29:59,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:29:59,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:29:59,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:29:59,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:29:59,604 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:29:59,633 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:29:59,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:29:59,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:29:59,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:29:59,636 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:29:59,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:29:59,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:29:59,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:29:59,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:29:59,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:29:59,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:29:59,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:29:59,638 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:29:59,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:29:59,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:29:59,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:29:59,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:29:59,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:29:59,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:29:59,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:29:59,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:29:59,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:29:59,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:29:59,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:29:59,641 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:29:59,641 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:30:00,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:30:00,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:30:00,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:30:00,102 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:30:00,103 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:30:00,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound5.c [2020-12-22 05:30:00,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5ec1d021/589ef3973a564dcab17bc8751d91ef49/FLAGbd17f27e7 [2020-12-22 05:30:00,852 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:30:00,853 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound5.c [2020-12-22 05:30:00,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5ec1d021/589ef3973a564dcab17bc8751d91ef49/FLAGbd17f27e7 [2020-12-22 05:30:01,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5ec1d021/589ef3973a564dcab17bc8751d91ef49 [2020-12-22 05:30:01,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:30:01,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:30:01,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:30:01,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:30:01,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:30:01,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:30:01" (1/1) ... [2020-12-22 05:30:01,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2316eb7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:01, skipping insertion in model container [2020-12-22 05:30:01,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:30:01" (1/1) ... [2020-12-22 05:30:01,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:30:01,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:30:01,462 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/hard-u_unwindbound5.c[537,550] [2020-12-22 05:30:01,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:30:01,503 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:30:01,522 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/hard-u_unwindbound5.c[537,550] [2020-12-22 05:30:01,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:30:01,568 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:30:01,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:01 WrapperNode [2020-12-22 05:30:01,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:30:01,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:30:01,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:30:01,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:30:01,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:01" (1/1) ... [2020-12-22 05:30:01,603 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:01" (1/1) ... [2020-12-22 05:30:01,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:30:01,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:30:01,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:30:01,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:30:01,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:01" (1/1) ... [2020-12-22 05:30:01,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:01" (1/1) ... [2020-12-22 05:30:01,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:01" (1/1) ... [2020-12-22 05:30:01,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:01" (1/1) ... [2020-12-22 05:30:01,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:01" (1/1) ... [2020-12-22 05:30:01,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:01" (1/1) ... [2020-12-22 05:30:01,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:01" (1/1) ... [2020-12-22 05:30:01,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:30:01,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:30:01,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:30:01,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:30:01,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:01" (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 05:30:01,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:30:01,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:30:01,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:30:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:30:02,284 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:30:02,284 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-22 05:30:02,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:30:02 BoogieIcfgContainer [2020-12-22 05:30:02,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:30:02,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:30:02,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:30:02,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:30:02,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:30:01" (1/3) ... [2020-12-22 05:30:02,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d7e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:30:02, skipping insertion in model container [2020-12-22 05:30:02,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:01" (2/3) ... [2020-12-22 05:30:02,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d7e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:30:02, skipping insertion in model container [2020-12-22 05:30:02,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:30:02" (3/3) ... [2020-12-22 05:30:02,296 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound5.c [2020-12-22 05:30:02,311 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:30:02,319 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 05:30:02,351 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 05:30:02,398 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:30:02,399 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:30:02,399 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:30:02,399 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:30:02,399 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:30:02,399 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:30:02,399 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:30:02,399 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:30:02,420 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-22 05:30:02,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:30:02,434 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:02,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:02,435 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:02,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:02,444 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-12-22 05:30:02,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:02,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653906735] [2020-12-22 05:30:02,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:02,691 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 05:30:02,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653906735] [2020-12-22 05:30:02,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:02,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:30:02,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971777837] [2020-12-22 05:30:02,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:30:02,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:02,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:30:02,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:30:02,722 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-22 05:30:02,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:02,757 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-12-22 05:30:02,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:30:02,759 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 05:30:02,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:02,787 INFO L225 Difference]: With dead ends: 79 [2020-12-22 05:30:02,787 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 05:30:02,792 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 05:30:02,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 05:30:02,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-22 05:30:02,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 05:30:02,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-22 05:30:02,843 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-12-22 05:30:02,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:02,844 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-22 05:30:02,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:30:02,844 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-22 05:30:02,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:30:02,845 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:02,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:02,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:30:02,849 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:02,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:02,852 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-22 05:30:02,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:02,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065200318] [2020-12-22 05:30:02,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:03,006 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 05:30:03,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065200318] [2020-12-22 05:30:03,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:03,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:30:03,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75602571] [2020-12-22 05:30:03,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:30:03,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:03,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:30:03,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:30:03,011 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-22 05:30:03,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:03,120 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-12-22 05:30:03,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:30:03,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-22 05:30:03,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:03,122 INFO L225 Difference]: With dead ends: 61 [2020-12-22 05:30:03,122 INFO L226 Difference]: Without dead ends: 59 [2020-12-22 05:30:03,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:30:03,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-22 05:30:03,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-12-22 05:30:03,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 05:30:03,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-22 05:30:03,132 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-22 05:30:03,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:03,133 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-22 05:30:03,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:30:03,133 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-22 05:30:03,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:30:03,134 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:03,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:03,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:30:03,134 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:03,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:03,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2020-12-22 05:30:03,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:03,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981460398] [2020-12-22 05:30:03,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:03,174 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 05:30:03,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981460398] [2020-12-22 05:30:03,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:03,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:30:03,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972161998] [2020-12-22 05:30:03,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:30:03,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:03,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:30:03,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:30:03,178 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-22 05:30:03,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:03,211 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-12-22 05:30:03,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:30:03,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 05:30:03,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:03,213 INFO L225 Difference]: With dead ends: 56 [2020-12-22 05:30:03,213 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 05:30:03,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:30:03,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 05:30:03,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-22 05:30:03,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 05:30:03,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-22 05:30:03,223 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2020-12-22 05:30:03,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:03,223 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-22 05:30:03,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:30:03,223 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-22 05:30:03,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:30:03,224 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:03,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:03,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:30:03,224 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:03,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:03,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2020-12-22 05:30:03,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:03,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940341912] [2020-12-22 05:30:03,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:03,315 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 05:30:03,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940341912] [2020-12-22 05:30:03,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:03,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:30:03,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587826992] [2020-12-22 05:30:03,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:30:03,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:03,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:30:03,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:30:03,318 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-22 05:30:03,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:03,405 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-12-22 05:30:03,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:30:03,406 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 05:30:03,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:03,407 INFO L225 Difference]: With dead ends: 56 [2020-12-22 05:30:03,407 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 05:30:03,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:30:03,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 05:30:03,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-22 05:30:03,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 05:30:03,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-22 05:30:03,422 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2020-12-22 05:30:03,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:03,423 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-22 05:30:03,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:30:03,423 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-22 05:30:03,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 05:30:03,424 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:03,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:03,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:30:03,425 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:03,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:03,426 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2020-12-22 05:30:03,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:03,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836014716] [2020-12-22 05:30:03,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:03,450 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:03,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [81966] [2020-12-22 05:30:03,451 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 05:30:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:03,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:30:03,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:03,667 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 05:30:03,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836014716] [2020-12-22 05:30:03,668 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:03,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81966] [2020-12-22 05:30:03,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:03,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:30:03,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108167409] [2020-12-22 05:30:03,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:30:03,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:03,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:30:03,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:30:03,672 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-12-22 05:30:03,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:03,939 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-12-22 05:30:03,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:30:03,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-22 05:30:03,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:03,941 INFO L225 Difference]: With dead ends: 81 [2020-12-22 05:30:03,941 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 05:30:03,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:30:03,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 05:30:03,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-12-22 05:30:03,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-22 05:30:03,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-12-22 05:30:03,953 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2020-12-22 05:30:03,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:03,953 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-12-22 05:30:03,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:30:03,954 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-12-22 05:30:03,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 05:30:03,954 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:03,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:04,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:04,169 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:04,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:04,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2020-12-22 05:30:04,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:04,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253140363] [2020-12-22 05:30:04,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:04,190 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:04,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1679299484] [2020-12-22 05:30:04,191 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 05:30:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:04,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:30:04,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:04,435 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 05:30:04,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253140363] [2020-12-22 05:30:04,436 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:04,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679299484] [2020-12-22 05:30:04,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:04,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:30:04,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429600892] [2020-12-22 05:30:04,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:30:04,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:04,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:30:04,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:30:04,439 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 7 states. [2020-12-22 05:30:04,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:04,763 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-12-22 05:30:04,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:30:04,764 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-22 05:30:04,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:04,765 INFO L225 Difference]: With dead ends: 53 [2020-12-22 05:30:04,765 INFO L226 Difference]: Without dead ends: 41 [2020-12-22 05:30:04,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:30:04,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-22 05:30:04,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-22 05:30:04,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-22 05:30:04,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-12-22 05:30:04,772 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 16 [2020-12-22 05:30:04,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:04,773 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-12-22 05:30:04,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:30:04,773 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-12-22 05:30:04,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 05:30:04,774 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:04,774 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:04,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:04,990 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:04,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:04,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1571159167, now seen corresponding path program 1 times [2020-12-22 05:30:04,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:04,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323297154] [2020-12-22 05:30:04,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:05,006 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:05,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [6554740] [2020-12-22 05:30:05,006 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 05:30:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:05,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:30:05,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:05,099 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 05:30:05,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323297154] [2020-12-22 05:30:05,100 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:05,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6554740] [2020-12-22 05:30:05,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:30:05,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 05:30:05,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52766187] [2020-12-22 05:30:05,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:30:05,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:05,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:30:05,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:30:05,103 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2020-12-22 05:30:05,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:05,134 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-12-22 05:30:05,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:30:05,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-22 05:30:05,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:05,136 INFO L225 Difference]: With dead ends: 62 [2020-12-22 05:30:05,136 INFO L226 Difference]: Without dead ends: 43 [2020-12-22 05:30:05,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 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 05:30:05,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-22 05:30:05,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-22 05:30:05,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-22 05:30:05,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-12-22 05:30:05,143 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-12-22 05:30:05,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:05,143 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-12-22 05:30:05,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:30:05,144 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-12-22 05:30:05,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 05:30:05,144 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:05,145 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:05,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:05,360 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:05,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:05,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1642186908, now seen corresponding path program 1 times [2020-12-22 05:30:05,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:05,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384482778] [2020-12-22 05:30:05,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:05,387 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:05,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033838821] [2020-12-22 05:30:05,387 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 05:30:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:05,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-22 05:30:05,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:05,765 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:30:05,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384482778] [2020-12-22 05:30:05,766 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:05,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033838821] [2020-12-22 05:30:05,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:30:05,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:30:05,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384446552] [2020-12-22 05:30:05,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:30:05,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:05,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:30:05,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:30:05,768 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 8 states. [2020-12-22 05:30:06,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:06,350 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2020-12-22 05:30:06,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:30:06,351 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-12-22 05:30:06,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:06,352 INFO L225 Difference]: With dead ends: 83 [2020-12-22 05:30:06,352 INFO L226 Difference]: Without dead ends: 71 [2020-12-22 05:30:06,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-12-22 05:30:06,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-22 05:30:06,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 55. [2020-12-22 05:30:06,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-22 05:30:06,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-12-22 05:30:06,361 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 20 [2020-12-22 05:30:06,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:06,362 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-12-22 05:30:06,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:30:06,362 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-12-22 05:30:06,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 05:30:06,363 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:06,363 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:06,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:06,567 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:06,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:06,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1958905870, now seen corresponding path program 1 times [2020-12-22 05:30:06,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:06,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545979869] [2020-12-22 05:30:06,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:06,582 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:06,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1891084785] [2020-12-22 05:30:06,582 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 05:30:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:06,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:30:06,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:06,818 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 05:30:06,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545979869] [2020-12-22 05:30:06,819 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:06,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891084785] [2020-12-22 05:30:06,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:30:06,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:30:06,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463623927] [2020-12-22 05:30:06,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:30:06,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:06,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:30:06,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:30:06,821 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 7 states. [2020-12-22 05:30:07,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:07,151 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-12-22 05:30:07,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:30:07,152 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-12-22 05:30:07,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:07,154 INFO L225 Difference]: With dead ends: 74 [2020-12-22 05:30:07,155 INFO L226 Difference]: Without dead ends: 70 [2020-12-22 05:30:07,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:30:07,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-22 05:30:07,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-12-22 05:30:07,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-22 05:30:07,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2020-12-22 05:30:07,186 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 24 [2020-12-22 05:30:07,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:07,187 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2020-12-22 05:30:07,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:30:07,187 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2020-12-22 05:30:07,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:30:07,189 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:07,190 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] [2020-12-22 05:30:07,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:07,403 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:07,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:07,404 INFO L82 PathProgramCache]: Analyzing trace with hash 2018616451, now seen corresponding path program 1 times [2020-12-22 05:30:07,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:07,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121794996] [2020-12-22 05:30:07,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:07,417 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:07,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900559891] [2020-12-22 05:30:07,418 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 05:30:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:07,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:30:07,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:07,542 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 05:30:07,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121794996] [2020-12-22 05:30:07,543 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:07,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900559891] [2020-12-22 05:30:07,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:30:07,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:30:07,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101527332] [2020-12-22 05:30:07,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:30:07,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:07,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:30:07,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:30:07,549 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand 6 states. [2020-12-22 05:30:07,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:07,577 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2020-12-22 05:30:07,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:30:07,578 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-22 05:30:07,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:07,578 INFO L225 Difference]: With dead ends: 71 [2020-12-22 05:30:07,579 INFO L226 Difference]: Without dead ends: 65 [2020-12-22 05:30:07,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:30:07,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-22 05:30:07,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-12-22 05:30:07,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-22 05:30:07,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2020-12-22 05:30:07,588 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 27 [2020-12-22 05:30:07,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:07,588 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2020-12-22 05:30:07,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:30:07,589 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2020-12-22 05:30:07,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 05:30:07,590 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:07,590 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:07,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:07,804 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:07,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:07,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1875627766, now seen corresponding path program 1 times [2020-12-22 05:30:07,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:07,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833746137] [2020-12-22 05:30:07,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:07,834 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:07,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [609111757] [2020-12-22 05:30:07,835 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 05:30:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:07,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:30:07,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:07,950 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 05:30:07,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833746137] [2020-12-22 05:30:07,950 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:07,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609111757] [2020-12-22 05:30:07,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:30:07,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:30:07,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961054299] [2020-12-22 05:30:07,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:30:07,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:07,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:30:07,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:30:07,953 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand 6 states. [2020-12-22 05:30:07,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:07,993 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2020-12-22 05:30:07,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:30:07,993 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-12-22 05:30:07,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:07,994 INFO L225 Difference]: With dead ends: 94 [2020-12-22 05:30:07,994 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 05:30:07,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:30:07,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 05:30:08,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-22 05:30:08,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 05:30:08,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2020-12-22 05:30:08,004 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 28 [2020-12-22 05:30:08,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:08,004 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2020-12-22 05:30:08,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:30:08,005 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2020-12-22 05:30:08,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 05:30:08,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:08,006 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:08,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:08,220 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:08,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:08,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1711245194, now seen corresponding path program 2 times [2020-12-22 05:30:08,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:08,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356198071] [2020-12-22 05:30:08,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:08,232 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:08,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1443188852] [2020-12-22 05:30:08,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:08,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:30:08,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:30:08,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-22 05:30:08,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:08,860 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 05:30:08,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356198071] [2020-12-22 05:30:08,861 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:08,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443188852] [2020-12-22 05:30:08,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:30:08,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:30:08,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643565684] [2020-12-22 05:30:08,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:30:08,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:08,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:30:08,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:30:08,864 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand 11 states. [2020-12-22 05:30:09,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:09,743 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2020-12-22 05:30:09,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:30:09,744 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-12-22 05:30:09,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:09,745 INFO L225 Difference]: With dead ends: 103 [2020-12-22 05:30:09,745 INFO L226 Difference]: Without dead ends: 93 [2020-12-22 05:30:09,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:30:09,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-22 05:30:09,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2020-12-22 05:30:09,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-22 05:30:09,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2020-12-22 05:30:09,754 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 28 [2020-12-22 05:30:09,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:09,754 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2020-12-22 05:30:09,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:30:09,755 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2020-12-22 05:30:09,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:30:09,756 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:09,756 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:09,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 05:30:09,961 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:09,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:09,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1339843922, now seen corresponding path program 1 times [2020-12-22 05:30:09,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:09,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881316056] [2020-12-22 05:30:09,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:09,975 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:09,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [944996867] [2020-12-22 05:30:09,975 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 05:30:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:14,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 05:30:14,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:14,704 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:14,766 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:30:14,789 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:30:15,002 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:30:15,284 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 05:30:15,833 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:17,444 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:19,407 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:21,425 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:23,548 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:24,806 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:25,808 INFO L757 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:26,863 INFO L757 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:28,413 INFO L757 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:29,668 INFO L757 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:30,877 INFO L757 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:31,841 INFO L757 QuantifierPusher]: Run 120 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:32,709 INFO L757 QuantifierPusher]: Run 130 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:36,704 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:41,415 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:46,442 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:53,539 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:31:05,813 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:31:25,362 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:31:28,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881316056] [2020-12-22 05:31:28,384 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:28,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944996867] [2020-12-22 05:31:28,384 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-22 05:31:28,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:31:28,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:31:28,385 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:31:28,385 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:31:28,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:28,610 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:31:28,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:31:28 BoogieIcfgContainer [2020-12-22 05:31:28,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:31:28,612 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:31:28,612 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:31:28,612 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:31:28,613 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:30:02" (3/4) ... [2020-12-22 05:31:28,616 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:31:28,616 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:31:28,618 INFO L168 Benchmark]: Toolchain (without parser) took 87368.15 ms. Allocated memory was 165.7 MB in the beginning and 380.6 MB in the end (delta: 215.0 MB). Free memory was 140.7 MB in the beginning and 302.3 MB in the end (delta: -161.6 MB). Peak memory consumption was 54.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:31:28,618 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 165.7 MB. Free memory is still 138.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:31:28,619 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.17 ms. Allocated memory is still 165.7 MB. Free memory was 140.5 MB in the beginning and 130.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:31:28,620 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.75 ms. Allocated memory is still 165.7 MB. Free memory was 130.5 MB in the beginning and 128.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:31:28,620 INFO L168 Benchmark]: Boogie Preprocessor took 57.74 ms. Allocated memory is still 165.7 MB. Free memory was 128.9 MB in the beginning and 127.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:31:28,621 INFO L168 Benchmark]: RCFGBuilder took 579.30 ms. Allocated memory is still 165.7 MB. Free memory was 127.1 MB in the beginning and 143.9 MB in the end (delta: -16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-12-22 05:31:28,621 INFO L168 Benchmark]: TraceAbstraction took 86322.87 ms. Allocated memory was 165.7 MB in the beginning and 380.6 MB in the end (delta: 215.0 MB). Free memory was 143.4 MB in the beginning and 302.8 MB in the end (delta: -159.4 MB). Peak memory consumption was 232.2 MB. Max. memory is 8.0 GB. [2020-12-22 05:31:28,622 INFO L168 Benchmark]: Witness Printer took 4.42 ms. Allocated memory is still 380.6 MB. Free memory was 302.8 MB in the beginning and 302.3 MB in the end (delta: 507.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:31:28,625 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 165.7 MB. Free memory is still 138.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 319.17 ms. Allocated memory is still 165.7 MB. Free memory was 140.5 MB in the beginning and 130.5 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 69.75 ms. Allocated memory is still 165.7 MB. Free memory was 130.5 MB in the beginning and 128.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.74 ms. Allocated memory is still 165.7 MB. Free memory was 128.9 MB in the beginning and 127.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 579.30 ms. Allocated memory is still 165.7 MB. Free memory was 127.1 MB in the beginning and 143.9 MB in the end (delta: -16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 86322.87 ms. Allocated memory was 165.7 MB in the beginning and 380.6 MB in the end (delta: 215.0 MB). Free memory was 143.4 MB in the beginning and 302.8 MB in the end (delta: -159.4 MB). Peak memory consumption was 232.2 MB. Max. memory is 8.0 GB. * Witness Printer took 4.42 ms. Allocated memory is still 380.6 MB. Free memory was 302.8 MB in the beginning and 302.3 MB in the end (delta: 507.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: 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: [L22] int counter = 0; [L24] unsigned int A, B; [L25] unsigned int r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 [L35] EXPR counter++ [L35] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p [L35] EXPR counter++ [L35] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND TRUE !(r >= d) [L45] EXPR counter++ [L45] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L49] COND FALSE !(!(p != 1)) [L51] d = d / 2 [L52] p = p / 2 [L53] COND TRUE r >= d [L54] r = r - d [L55] q = q + p [L45] EXPR counter++ [L45] COND TRUE counter++<5 [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 86.1s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 394 SDtfs, 783 SDslu, 796 SDs, 0 SdLazy, 633 SolverSat, 126 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 211 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 94 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 30603 SizeOfPredicates, 44 NumberOfNonLiveVariables, 809 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 0/59 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...