/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/hard2_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:31:11,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:31:11,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:31:11,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:31:11,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:31:11,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:31:11,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:31:11,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:31:11,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:31:11,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:31:11,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:31:11,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-12-22 05:31:11,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:31:11,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:31:11,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:31:11,527 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:31:11,580 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:31:11,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:31:11,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:31:11,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:31:11,585 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:31:11,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:31:11,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:31:11,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:31:11,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:31:11,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:31:11,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:31:11,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:31:11,588 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:31:11,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:31:11,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:31:11,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:31:11,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:31:11,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:31:11,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:31:11,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:31:11,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:31:11,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:31:11,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:31:11,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:31:11,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:31:11,591 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:31:11,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:31:12,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:31:12,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:31:12,011 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:31:12,011 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:31:12,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound50.c [2020-12-22 05:31:12,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae59131b9/e493efc3d3b04caf8d17d771af63526b/FLAGd4a0b6a1c [2020-12-22 05:31:12,808 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:31:12,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound50.c [2020-12-22 05:31:12,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae59131b9/e493efc3d3b04caf8d17d771af63526b/FLAGd4a0b6a1c [2020-12-22 05:31:13,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae59131b9/e493efc3d3b04caf8d17d771af63526b [2020-12-22 05:31:13,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:31:13,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:31:13,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:31:13,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:31:13,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:31:13,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:31:13" (1/1) ... [2020-12-22 05:31:13,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65fc866d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:13, skipping insertion in model container [2020-12-22 05:31:13,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:31:13" (1/1) ... [2020-12-22 05:31:13,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:31:13,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:31:13,432 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/hard2_unwindbound50.c[526,539] [2020-12-22 05:31:13,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:31:13,461 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:31:13,475 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/hard2_unwindbound50.c[526,539] [2020-12-22 05:31:13,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:31:13,505 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:31:13,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:13 WrapperNode [2020-12-22 05:31:13,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:31:13,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:31:13,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:31:13,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:31:13,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:13" (1/1) ... [2020-12-22 05:31:13,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:13" (1/1) ... [2020-12-22 05:31:13,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:31:13,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:31:13,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:31:13,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:31:13,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:13" (1/1) ... [2020-12-22 05:31:13,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:13" (1/1) ... [2020-12-22 05:31:13,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:13" (1/1) ... [2020-12-22 05:31:13,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:13" (1/1) ... [2020-12-22 05:31:13,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:13" (1/1) ... [2020-12-22 05:31:13,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:13" (1/1) ... [2020-12-22 05:31:13,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:13" (1/1) ... [2020-12-22 05:31:13,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:31:13,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:31:13,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:31:13,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:31:13,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:13" (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 05:31:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:31:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:31:13,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:31:13,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:31:14,161 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:31:14,162 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2020-12-22 05:31:14,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:31:14 BoogieIcfgContainer [2020-12-22 05:31:14,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:31:14,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:31:14,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:31:14,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:31:14,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:31:13" (1/3) ... [2020-12-22 05:31:14,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61aaf92a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:31:14, skipping insertion in model container [2020-12-22 05:31:14,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:31:13" (2/3) ... [2020-12-22 05:31:14,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61aaf92a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:31:14, skipping insertion in model container [2020-12-22 05:31:14,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:31:14" (3/3) ... [2020-12-22 05:31:14,184 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_unwindbound50.c [2020-12-22 05:31:14,193 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:31:14,198 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 05:31:14,224 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 05:31:14,274 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:31:14,274 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:31:14,274 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:31:14,275 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:31:14,275 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:31:14,275 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:31:14,275 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:31:14,275 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:31:14,296 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-12-22 05:31:14,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 05:31:14,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:14,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 05:31:14,305 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 05:31:14,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:14,313 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-22 05:31:14,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:14,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560045709] [2020-12-22 05:31:14,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:14,645 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 05:31:14,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560045709] [2020-12-22 05:31:14,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:31:14,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:31:14,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77825435] [2020-12-22 05:31:14,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:31:14,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:14,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:31:14,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:31:14,677 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-12-22 05:31:14,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:14,860 INFO L93 Difference]: Finished difference Result 102 states and 139 transitions. [2020-12-22 05:31:14,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:31:14,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 05:31:14,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:14,872 INFO L225 Difference]: With dead ends: 102 [2020-12-22 05:31:14,872 INFO L226 Difference]: Without dead ends: 57 [2020-12-22 05:31:14,876 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 05:31:14,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-22 05:31:14,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2020-12-22 05:31:14,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 05:31:14,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-22 05:31:14,917 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2020-12-22 05:31:14,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:14,917 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-22 05:31:14,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:31:14,918 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-22 05:31:14,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:31:14,918 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:14,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:14,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:31:14,919 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 05:31:14,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:14,920 INFO L82 PathProgramCache]: Analyzing trace with hash 178921133, now seen corresponding path program 1 times [2020-12-22 05:31:14,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:14,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450017952] [2020-12-22 05:31:14,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:14,936 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:14,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1469563151] [2020-12-22 05:31:14,937 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 05:31:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:15,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 05:31:15,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:15,081 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 05:31:15,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450017952] [2020-12-22 05:31:15,081 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:15,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469563151] [2020-12-22 05:31:15,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:31:15,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:31:15,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700098596] [2020-12-22 05:31:15,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:31:15,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:15,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:31:15,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:31:15,085 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-12-22 05:31:15,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:15,105 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-12-22 05:31:15,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:31:15,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-22 05:31:15,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:15,109 INFO L225 Difference]: With dead ends: 54 [2020-12-22 05:31:15,109 INFO L226 Difference]: Without dead ends: 35 [2020-12-22 05:31:15,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 05:31:15,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-22 05:31:15,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-22 05:31:15,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 05:31:15,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-22 05:31:15,118 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-22 05:31:15,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:15,118 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-22 05:31:15,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:31:15,119 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-22 05:31:15,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:31:15,119 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:15,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:15,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:31:15,334 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 05:31:15,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:15,336 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-22 05:31:15,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:15,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930520873] [2020-12-22 05:31:15,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:15,413 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 05:31:15,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930520873] [2020-12-22 05:31:15,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:31:15,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:31:15,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900626564] [2020-12-22 05:31:15,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:31:15,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:15,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:31:15,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:31:15,416 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-22 05:31:15,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:15,516 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-12-22 05:31:15,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:31:15,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-22 05:31:15,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:15,518 INFO L225 Difference]: With dead ends: 54 [2020-12-22 05:31:15,518 INFO L226 Difference]: Without dead ends: 52 [2020-12-22 05:31:15,519 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 05:31:15,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-22 05:31:15,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2020-12-22 05:31:15,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-22 05:31:15,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-22 05:31:15,527 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 8 [2020-12-22 05:31:15,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:15,528 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-22 05:31:15,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:31:15,528 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-22 05:31:15,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:31:15,529 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:15,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:15,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:31:15,530 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 05:31:15,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:15,530 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-22 05:31:15,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:15,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459555860] [2020-12-22 05:31:15,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:15,546 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:15,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2005450717] [2020-12-22 05:31:15,547 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 05:31:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:15,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:31:15,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:15,681 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 05:31:15,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459555860] [2020-12-22 05:31:15,682 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:15,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005450717] [2020-12-22 05:31:15,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:31:15,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:31:15,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898543270] [2020-12-22 05:31:15,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:31:15,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:15,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:31:15,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:31:15,685 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2020-12-22 05:31:15,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:15,859 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2020-12-22 05:31:15,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:31:15,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-22 05:31:15,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:15,865 INFO L225 Difference]: With dead ends: 79 [2020-12-22 05:31:15,866 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 05:31:15,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:31:15,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 05:31:15,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2020-12-22 05:31:15,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 05:31:15,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-12-22 05:31:15,899 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 10 [2020-12-22 05:31:15,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:15,899 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-12-22 05:31:15,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:31:15,900 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-12-22 05:31:15,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 05:31:15,904 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:15,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:16,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:16,120 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 05:31:16,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:16,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1265846374, now seen corresponding path program 1 times [2020-12-22 05:31:16,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:16,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286823135] [2020-12-22 05:31:16,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:16,133 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:16,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1595899871] [2020-12-22 05:31:16,134 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 05:31:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:16,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:31:16,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:16,314 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 05:31:16,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286823135] [2020-12-22 05:31:16,314 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:16,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595899871] [2020-12-22 05:31:16,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:31:16,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:31:16,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697867111] [2020-12-22 05:31:16,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:31:16,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:16,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:31:16,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:31:16,317 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 5 states. [2020-12-22 05:31:16,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:16,399 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-12-22 05:31:16,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:31:16,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 05:31:16,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:16,404 INFO L225 Difference]: With dead ends: 66 [2020-12-22 05:31:16,404 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 05:31:16,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:31:16,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 05:31:16,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-12-22 05:31:16,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-22 05:31:16,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-12-22 05:31:16,424 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 14 [2020-12-22 05:31:16,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:16,426 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-12-22 05:31:16,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:31:16,426 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-12-22 05:31:16,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 05:31:16,427 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:16,427 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 05:31:16,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:16,647 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 05:31:16,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:16,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1486360258, now seen corresponding path program 1 times [2020-12-22 05:31:16,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:16,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304760566] [2020-12-22 05:31:16,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:16,674 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:16,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320404741] [2020-12-22 05:31:16,675 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 05:31:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:16,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:31:16,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:16,771 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 05:31:16,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304760566] [2020-12-22 05:31:16,772 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:16,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320404741] [2020-12-22 05:31:16,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:16,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 05:31:16,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550774265] [2020-12-22 05:31:16,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:31:16,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:16,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:31:16,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:31:16,775 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2020-12-22 05:31:16,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:16,822 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2020-12-22 05:31:16,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:31:16,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-22 05:31:16,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:16,827 INFO L225 Difference]: With dead ends: 78 [2020-12-22 05:31:16,828 INFO L226 Difference]: Without dead ends: 50 [2020-12-22 05:31:16,829 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 05:31:16,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-22 05:31:16,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-22 05:31:16,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 05:31:16,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-12-22 05:31:16,849 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 18 [2020-12-22 05:31:16,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:16,849 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-12-22 05:31:16,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:31:16,849 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-12-22 05:31:16,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 05:31:16,853 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:16,853 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:17,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:17,055 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 05:31:17,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:17,056 INFO L82 PathProgramCache]: Analyzing trace with hash -2100512702, now seen corresponding path program 1 times [2020-12-22 05:31:17,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:17,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098346514] [2020-12-22 05:31:17,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:17,076 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:17,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2108143144] [2020-12-22 05:31:17,076 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 05:31:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:17,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 05:31:17,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:17,218 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 05:31:17,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098346514] [2020-12-22 05:31:17,218 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:17,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108143144] [2020-12-22 05:31:17,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:17,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:31:17,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930810603] [2020-12-22 05:31:17,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:31:17,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:17,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:31:17,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:31:17,222 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 7 states. [2020-12-22 05:31:17,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:17,406 INFO L93 Difference]: Finished difference Result 117 states and 141 transitions. [2020-12-22 05:31:17,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:31:17,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-22 05:31:17,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:17,408 INFO L225 Difference]: With dead ends: 117 [2020-12-22 05:31:17,408 INFO L226 Difference]: Without dead ends: 77 [2020-12-22 05:31:17,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:31:17,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-22 05:31:17,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 63. [2020-12-22 05:31:17,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-22 05:31:17,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2020-12-22 05:31:17,419 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 18 [2020-12-22 05:31:17,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:17,419 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2020-12-22 05:31:17,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:31:17,419 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2020-12-22 05:31:17,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 05:31:17,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:17,421 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:17,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 05:31:17,634 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 05:31:17,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:17,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1057713026, now seen corresponding path program 1 times [2020-12-22 05:31:17,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:17,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545552175] [2020-12-22 05:31:17,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:17,649 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:17,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067594188] [2020-12-22 05:31:17,650 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 05:31:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:17,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:31:17,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:17,782 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 05:31:17,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545552175] [2020-12-22 05:31:17,783 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:17,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067594188] [2020-12-22 05:31:17,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:17,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:31:17,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529158055] [2020-12-22 05:31:17,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:31:17,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:17,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:31:17,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:31:17,786 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand 6 states. [2020-12-22 05:31:17,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:17,811 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2020-12-22 05:31:17,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:31:17,812 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-12-22 05:31:17,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:17,813 INFO L225 Difference]: With dead ends: 70 [2020-12-22 05:31:17,813 INFO L226 Difference]: Without dead ends: 64 [2020-12-22 05:31:17,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 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 05:31:17,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-22 05:31:17,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-12-22 05:31:17,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-22 05:31:17,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2020-12-22 05:31:17,822 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 25 [2020-12-22 05:31:17,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:17,823 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2020-12-22 05:31:17,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:31:17,823 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2020-12-22 05:31:17,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 05:31:17,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:17,824 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:18,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:18,038 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 05:31:18,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:18,039 INFO L82 PathProgramCache]: Analyzing trace with hash 998694484, now seen corresponding path program 2 times [2020-12-22 05:31:18,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:18,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562519742] [2020-12-22 05:31:18,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:18,053 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:18,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [455011108] [2020-12-22 05:31:18,053 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 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 05:31:18,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 05:31:18,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:18,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 05:31:18,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:18,176 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 05:31:18,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562519742] [2020-12-22 05:31:18,177 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:18,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455011108] [2020-12-22 05:31:18,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:31:18,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:31:18,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953968067] [2020-12-22 05:31:18,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:31:18,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:18,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:31:18,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:31:18,180 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 5 states. [2020-12-22 05:31:18,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:18,226 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2020-12-22 05:31:18,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:31:18,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-22 05:31:18,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:18,231 INFO L225 Difference]: With dead ends: 99 [2020-12-22 05:31:18,232 INFO L226 Difference]: Without dead ends: 71 [2020-12-22 05:31:18,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:31:18,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-22 05:31:18,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2020-12-22 05:31:18,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-22 05:31:18,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2020-12-22 05:31:18,255 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 26 [2020-12-22 05:31:18,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:18,256 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2020-12-22 05:31:18,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:31:18,262 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2020-12-22 05:31:18,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 05:31:18,263 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:18,263 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-12-22 05:31:18,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:18,464 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 05:31:18,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:18,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 2 times [2020-12-22 05:31:18,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:18,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317317454] [2020-12-22 05:31:18,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:18,478 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:18,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1782554027] [2020-12-22 05:31:18,479 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 05:31:18,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:31:18,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:18,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 05:31:18,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:18,699 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 05:31:18,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317317454] [2020-12-22 05:31:18,700 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:18,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782554027] [2020-12-22 05:31:18,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:18,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:31:18,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952171128] [2020-12-22 05:31:18,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:31:18,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:18,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:31:18,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:18,708 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 8 states. [2020-12-22 05:31:18,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:18,949 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2020-12-22 05:31:18,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:31:18,950 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-12-22 05:31:18,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:18,953 INFO L225 Difference]: With dead ends: 138 [2020-12-22 05:31:18,953 INFO L226 Difference]: Without dead ends: 124 [2020-12-22 05:31:18,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:31:18,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-22 05:31:18,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 92. [2020-12-22 05:31:18,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-22 05:31:18,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2020-12-22 05:31:18,971 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 26 [2020-12-22 05:31:18,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:18,972 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2020-12-22 05:31:18,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:31:18,972 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2020-12-22 05:31:18,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:31:18,973 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:18,973 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:19,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 05:31:19,187 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 05:31:19,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:19,188 INFO L82 PathProgramCache]: Analyzing trace with hash 864374201, now seen corresponding path program 1 times [2020-12-22 05:31:19,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:19,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94635842] [2020-12-22 05:31:19,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:19,200 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:19,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [79494703] [2020-12-22 05:31:19,201 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 05:31:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:19,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:31:19,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:19,357 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 05:31:19,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94635842] [2020-12-22 05:31:19,358 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:19,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79494703] [2020-12-22 05:31:19,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:19,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:31:19,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352738794] [2020-12-22 05:31:19,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:31:19,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:19,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:31:19,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:31:19,360 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand 6 states. [2020-12-22 05:31:19,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:19,406 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2020-12-22 05:31:19,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:31:19,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-22 05:31:19,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:19,408 INFO L225 Difference]: With dead ends: 100 [2020-12-22 05:31:19,408 INFO L226 Difference]: Without dead ends: 92 [2020-12-22 05:31:19,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 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 05:31:19,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-22 05:31:19,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-12-22 05:31:19,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-22 05:31:19,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2020-12-22 05:31:19,418 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 27 [2020-12-22 05:31:19,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:19,418 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2020-12-22 05:31:19,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:31:19,418 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2020-12-22 05:31:19,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 05:31:19,419 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:19,420 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] [2020-12-22 05:31:19,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:19,635 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 05:31:19,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:19,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1388472819, now seen corresponding path program 1 times [2020-12-22 05:31:19,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:19,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691454562] [2020-12-22 05:31:19,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:19,649 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:19,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358144546] [2020-12-22 05:31:19,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:19,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 05:31:19,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:19,873 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:19,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691454562] [2020-12-22 05:31:19,874 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:19,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358144546] [2020-12-22 05:31:19,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:19,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:31:19,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135003854] [2020-12-22 05:31:19,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:31:19,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:19,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:31:19,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:31:19,876 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand 7 states. [2020-12-22 05:31:20,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:20,054 INFO L93 Difference]: Finished difference Result 114 states and 132 transitions. [2020-12-22 05:31:20,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:31:20,055 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-12-22 05:31:20,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:20,056 INFO L225 Difference]: With dead ends: 114 [2020-12-22 05:31:20,056 INFO L226 Difference]: Without dead ends: 112 [2020-12-22 05:31:20,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:31:20,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-22 05:31:20,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 99. [2020-12-22 05:31:20,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-22 05:31:20,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2020-12-22 05:31:20,066 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 29 [2020-12-22 05:31:20,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:20,066 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2020-12-22 05:31:20,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:31:20,066 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2020-12-22 05:31:20,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 05:31:20,067 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:20,067 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:20,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:20,275 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 05:31:20,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:20,276 INFO L82 PathProgramCache]: Analyzing trace with hash -93011142, now seen corresponding path program 1 times [2020-12-22 05:31:20,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:20,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589207158] [2020-12-22 05:31:20,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:20,287 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:20,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910004036] [2020-12-22 05:31:20,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:20,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 05:31:20,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:20,417 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:20,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589207158] [2020-12-22 05:31:20,418 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:20,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910004036] [2020-12-22 05:31:20,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:20,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:31:20,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828208637] [2020-12-22 05:31:20,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:31:20,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:20,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:31:20,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:31:20,420 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand 7 states. [2020-12-22 05:31:20,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:20,458 INFO L93 Difference]: Finished difference Result 112 states and 131 transitions. [2020-12-22 05:31:20,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:31:20,459 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-12-22 05:31:20,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:20,460 INFO L225 Difference]: With dead ends: 112 [2020-12-22 05:31:20,460 INFO L226 Difference]: Without dead ends: 102 [2020-12-22 05:31:20,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:20,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-22 05:31:20,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-12-22 05:31:20,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-22 05:31:20,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2020-12-22 05:31:20,469 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 30 [2020-12-22 05:31:20,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:20,469 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2020-12-22 05:31:20,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:31:20,469 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2020-12-22 05:31:20,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:31:20,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:20,470 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:20,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 05:31:20,684 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:20,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:20,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1412607120, now seen corresponding path program 1 times [2020-12-22 05:31:20,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:20,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933596592] [2020-12-22 05:31:20,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:20,696 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:20,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029871315] [2020-12-22 05:31:20,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:20,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 05:31:20,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:20,866 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:20,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933596592] [2020-12-22 05:31:20,867 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:20,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029871315] [2020-12-22 05:31:20,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:20,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:31:20,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215680484] [2020-12-22 05:31:20,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:31:20,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:20,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:31:20,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:20,869 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand 8 states. [2020-12-22 05:31:21,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:21,066 INFO L93 Difference]: Finished difference Result 130 states and 152 transitions. [2020-12-22 05:31:21,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:31:21,067 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-22 05:31:21,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:21,068 INFO L225 Difference]: With dead ends: 130 [2020-12-22 05:31:21,068 INFO L226 Difference]: Without dead ends: 102 [2020-12-22 05:31:21,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:31:21,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-22 05:31:21,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-12-22 05:31:21,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-22 05:31:21,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-12-22 05:31:21,077 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 31 [2020-12-22 05:31:21,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:21,077 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-12-22 05:31:21,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:31:21,077 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-12-22 05:31:21,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 05:31:21,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:21,078 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2020-12-22 05:31:21,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 05:31:21,293 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:21,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:21,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1601348966, now seen corresponding path program 3 times [2020-12-22 05:31:21,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:21,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247925853] [2020-12-22 05:31:21,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:21,303 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:21,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433906684] [2020-12-22 05:31:21,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:21,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 05:31:21,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:21,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-22 05:31:21,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:21,549 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 05:31:21,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247925853] [2020-12-22 05:31:21,549 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:21,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433906684] [2020-12-22 05:31:21,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:21,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:31:21,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333274748] [2020-12-22 05:31:21,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:31:21,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:21,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:31:21,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:31:21,552 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 9 states. [2020-12-22 05:31:21,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:21,789 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2020-12-22 05:31:21,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:31:21,789 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-12-22 05:31:21,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:21,791 INFO L225 Difference]: With dead ends: 127 [2020-12-22 05:31:21,791 INFO L226 Difference]: Without dead ends: 117 [2020-12-22 05:31:21,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:31:21,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-22 05:31:21,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 98. [2020-12-22 05:31:21,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-22 05:31:21,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2020-12-22 05:31:21,803 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 34 [2020-12-22 05:31:21,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:21,803 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2020-12-22 05:31:21,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:31:21,803 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2020-12-22 05:31:21,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 05:31:21,804 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:21,804 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:22,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 05:31:22,018 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:22,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:22,019 INFO L82 PathProgramCache]: Analyzing trace with hash 894098064, now seen corresponding path program 1 times [2020-12-22 05:31:22,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:22,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944485883] [2020-12-22 05:31:22,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:22,032 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:22,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [236374800] [2020-12-22 05:31:22,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:22,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 05:31:22,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:22,211 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:22,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944485883] [2020-12-22 05:31:22,211 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:22,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236374800] [2020-12-22 05:31:22,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:22,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:31:22,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254833853] [2020-12-22 05:31:22,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:31:22,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:22,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:31:22,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:22,213 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand 8 states. [2020-12-22 05:31:22,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:22,384 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-12-22 05:31:22,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:31:22,384 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-12-22 05:31:22,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:22,385 INFO L225 Difference]: With dead ends: 100 [2020-12-22 05:31:22,386 INFO L226 Difference]: Without dead ends: 83 [2020-12-22 05:31:22,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:31:22,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-22 05:31:22,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-12-22 05:31:22,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-22 05:31:22,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2020-12-22 05:31:22,397 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 34 [2020-12-22 05:31:22,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:22,397 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2020-12-22 05:31:22,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:31:22,397 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2020-12-22 05:31:22,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 05:31:22,398 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:22,398 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:22,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:22,612 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:22,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:22,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1890706023, now seen corresponding path program 2 times [2020-12-22 05:31:22,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:22,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314527090] [2020-12-22 05:31:22,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:22,624 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:22,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571676092] [2020-12-22 05:31:22,624 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:22,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:31:22,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:22,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 05:31:22,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:22,785 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:22,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314527090] [2020-12-22 05:31:22,785 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:22,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571676092] [2020-12-22 05:31:22,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:22,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:31:22,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899511858] [2020-12-22 05:31:22,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:31:22,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:22,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:31:22,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:31:22,790 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand 7 states. [2020-12-22 05:31:22,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:22,848 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2020-12-22 05:31:22,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:31:22,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-12-22 05:31:22,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:22,850 INFO L225 Difference]: With dead ends: 93 [2020-12-22 05:31:22,850 INFO L226 Difference]: Without dead ends: 85 [2020-12-22 05:31:22,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:31:22,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-22 05:31:22,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-12-22 05:31:22,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-22 05:31:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 97 transitions. [2020-12-22 05:31:22,861 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 97 transitions. Word has length 35 [2020-12-22 05:31:22,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:22,861 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 97 transitions. [2020-12-22 05:31:22,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:31:22,862 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 97 transitions. [2020-12-22 05:31:22,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:31:22,863 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:22,863 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:23,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 05:31:23,078 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:23,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:23,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1368897339, now seen corresponding path program 2 times [2020-12-22 05:31:23,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:23,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960713351] [2020-12-22 05:31:23,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:23,088 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:23,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2036018944] [2020-12-22 05:31:23,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:23,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:31:23,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:23,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 05:31:23,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:23,327 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:23,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960713351] [2020-12-22 05:31:23,327 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:23,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036018944] [2020-12-22 05:31:23,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:23,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:31:23,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051438674] [2020-12-22 05:31:23,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:31:23,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:23,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:31:23,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:23,330 INFO L87 Difference]: Start difference. First operand 85 states and 97 transitions. Second operand 8 states. [2020-12-22 05:31:23,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:23,609 INFO L93 Difference]: Finished difference Result 157 states and 181 transitions. [2020-12-22 05:31:23,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:31:23,610 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-12-22 05:31:23,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:23,611 INFO L225 Difference]: With dead ends: 157 [2020-12-22 05:31:23,611 INFO L226 Difference]: Without dead ends: 119 [2020-12-22 05:31:23,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:31:23,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-12-22 05:31:23,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 99. [2020-12-22 05:31:23,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-22 05:31:23,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2020-12-22 05:31:23,622 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 37 [2020-12-22 05:31:23,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:23,622 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2020-12-22 05:31:23,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:31:23,623 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2020-12-22 05:31:23,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 05:31:23,623 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:23,623 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:23,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 05:31:23,838 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:23,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:23,839 INFO L82 PathProgramCache]: Analyzing trace with hash -513882164, now seen corresponding path program 2 times [2020-12-22 05:31:23,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:23,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159534871] [2020-12-22 05:31:23,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:23,860 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:23,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749450384] [2020-12-22 05:31:23,861 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:23,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:31:23,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:23,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 05:31:23,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:24,016 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:24,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159534871] [2020-12-22 05:31:24,016 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:24,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749450384] [2020-12-22 05:31:24,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:24,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:31:24,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573451540] [2020-12-22 05:31:24,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:31:24,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:24,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:31:24,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:24,018 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand 8 states. [2020-12-22 05:31:24,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:24,063 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2020-12-22 05:31:24,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:31:24,064 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-12-22 05:31:24,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:24,064 INFO L225 Difference]: With dead ends: 118 [2020-12-22 05:31:24,065 INFO L226 Difference]: Without dead ends: 108 [2020-12-22 05:31:24,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:31:24,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-22 05:31:24,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-12-22 05:31:24,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-22 05:31:24,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2020-12-22 05:31:24,074 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 38 [2020-12-22 05:31:24,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:24,075 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2020-12-22 05:31:24,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:31:24,075 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2020-12-22 05:31:24,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 05:31:24,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:24,075 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:24,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:24,290 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:24,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:24,291 INFO L82 PathProgramCache]: Analyzing trace with hash 411953429, now seen corresponding path program 3 times [2020-12-22 05:31:24,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:24,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487014991] [2020-12-22 05:31:24,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:24,300 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:24,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25965937] [2020-12-22 05:31:24,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:24,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-22 05:31:24,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:24,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 05:31:24,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:24,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487014991] [2020-12-22 05:31:24,457 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:24,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25965937] [2020-12-22 05:31:24,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:24,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:31:24,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541623107] [2020-12-22 05:31:24,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:31:24,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:24,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:31:24,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:31:24,462 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand 8 states. [2020-12-22 05:31:24,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:24,534 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2020-12-22 05:31:24,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:31:24,534 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-12-22 05:31:24,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:24,535 INFO L225 Difference]: With dead ends: 117 [2020-12-22 05:31:24,535 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 05:31:24,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:31:24,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 05:31:24,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-12-22 05:31:24,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-22 05:31:24,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 124 transitions. [2020-12-22 05:31:24,546 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 124 transitions. Word has length 43 [2020-12-22 05:31:24,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:24,546 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 124 transitions. [2020-12-22 05:31:24,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:31:24,547 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 124 transitions. [2020-12-22 05:31:24,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 05:31:24,547 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:24,547 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-22 05:31:24,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:24,761 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:24,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:24,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1687535646, now seen corresponding path program 3 times [2020-12-22 05:31:24,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:24,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021225525] [2020-12-22 05:31:24,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:24,770 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:24,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1852498940] [2020-12-22 05:31:24,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:24,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 05:31:24,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:24,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 42 conjunts are in the unsatisfiable core [2020-12-22 05:31:24,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:25,040 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:31:25,055 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:31:25,063 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 05:31:25,081 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:31:25,083 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:31:25,089 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:31:25,097 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:31:25,100 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:31:25,112 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:31:25,119 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 05:31:25,127 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:31:25,129 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:31:25,134 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:31:25,141 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:31:25,144 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:31:25,651 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 05:31:25,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021225525] [2020-12-22 05:31:25,652 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:25,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852498940] [2020-12-22 05:31:25,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:25,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:31:25,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955772552] [2020-12-22 05:31:25,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:31:25,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:25,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:31:25,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:31:25,654 INFO L87 Difference]: Start difference. First operand 109 states and 124 transitions. Second operand 10 states. [2020-12-22 05:31:25,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:25,875 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2020-12-22 05:31:25,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:31:25,876 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-12-22 05:31:25,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:25,877 INFO L225 Difference]: With dead ends: 113 [2020-12-22 05:31:25,877 INFO L226 Difference]: Without dead ends: 109 [2020-12-22 05:31:25,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:31:25,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-22 05:31:25,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2020-12-22 05:31:25,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-22 05:31:25,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2020-12-22 05:31:25,888 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 44 [2020-12-22 05:31:25,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:25,888 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2020-12-22 05:31:25,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:31:25,889 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2020-12-22 05:31:25,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 05:31:25,889 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:25,889 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:26,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:26,103 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:31:26,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:26,104 INFO L82 PathProgramCache]: Analyzing trace with hash 773970761, now seen corresponding path program 3 times [2020-12-22 05:31:26,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:26,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444360811] [2020-12-22 05:31:26,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:26,118 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:26,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106410206] [2020-12-22 05:31:26,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:26,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 05:31:26,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:26,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 05:31:26,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:26,316 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:26,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444360811] [2020-12-22 05:31:26,317 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:26,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106410206] [2020-12-22 05:31:26,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:26,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:31:26,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441071789] [2020-12-22 05:31:26,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:31:26,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:26,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:31:26,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:31:26,321 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 9 states. [2020-12-22 05:31:26,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:26,382 INFO L93 Difference]: Finished difference Result 127 states and 143 transitions. [2020-12-22 05:31:26,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:31:26,383 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-12-22 05:31:26,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:26,384 INFO L225 Difference]: With dead ends: 127 [2020-12-22 05:31:26,384 INFO L226 Difference]: Without dead ends: 117 [2020-12-22 05:31:26,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:31:26,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-22 05:31:26,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2020-12-22 05:31:26,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-22 05:31:26,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 130 transitions. [2020-12-22 05:31:26,396 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 130 transitions. Word has length 45 [2020-12-22 05:31:26,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:26,396 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 130 transitions. [2020-12-22 05:31:26,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:31:26,396 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 130 transitions. [2020-12-22 05:31:26,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 05:31:26,397 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:26,397 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:26,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 05:31:26,614 INFO L429 AbstractCegarLoop]: === Iteration 23 === [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 05:31:26,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:26,614 INFO L82 PathProgramCache]: Analyzing trace with hash 494883615, now seen corresponding path program 2 times [2020-12-22 05:31:26,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:26,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3395856] [2020-12-22 05:31:26,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:26,623 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:26,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431715699] [2020-12-22 05:31:26,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:26,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 05:31:26,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:26,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 05:31:26,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:26,827 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-22 05:31:26,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3395856] [2020-12-22 05:31:26,828 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:26,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431715699] [2020-12-22 05:31:26,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:26,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:31:26,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819352217] [2020-12-22 05:31:26,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:31:26,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:26,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:31:26,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:31:26,830 INFO L87 Difference]: Start difference. First operand 116 states and 130 transitions. Second operand 11 states. [2020-12-22 05:31:27,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:27,255 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2020-12-22 05:31:27,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:31:27,256 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-12-22 05:31:27,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:27,257 INFO L225 Difference]: With dead ends: 132 [2020-12-22 05:31:27,257 INFO L226 Difference]: Without dead ends: 120 [2020-12-22 05:31:27,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:31:27,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-12-22 05:31:27,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 108. [2020-12-22 05:31:27,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-22 05:31:27,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2020-12-22 05:31:27,270 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 49 [2020-12-22 05:31:27,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:27,270 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2020-12-22 05:31:27,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:31:27,270 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2020-12-22 05:31:27,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 05:31:27,271 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:27,271 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:27,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 05:31:27,485 INFO L429 AbstractCegarLoop]: === Iteration 24 === [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 05:31:27,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:27,486 INFO L82 PathProgramCache]: Analyzing trace with hash -2054725181, now seen corresponding path program 4 times [2020-12-22 05:31:27,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:27,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785150067] [2020-12-22 05:31:27,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:27,494 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:27,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406799909] [2020-12-22 05:31:27,495 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:27,553 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:31:27,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:27,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 05:31:27,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:27,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785150067] [2020-12-22 05:31:27,652 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:27,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406799909] [2020-12-22 05:31:27,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:27,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:31:27,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290843442] [2020-12-22 05:31:27,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:31:27,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:27,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:31:27,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:31:27,654 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand 9 states. [2020-12-22 05:31:27,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:27,736 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2020-12-22 05:31:27,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:31:27,736 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-12-22 05:31:27,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:27,737 INFO L225 Difference]: With dead ends: 118 [2020-12-22 05:31:27,737 INFO L226 Difference]: Without dead ends: 110 [2020-12-22 05:31:27,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-12-22 05:31:27,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-22 05:31:27,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-12-22 05:31:27,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-22 05:31:27,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2020-12-22 05:31:27,750 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 51 [2020-12-22 05:31:27,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:27,750 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2020-12-22 05:31:27,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:31:27,750 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2020-12-22 05:31:27,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 05:31:27,751 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:27,751 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:27,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:27,965 INFO L429 AbstractCegarLoop]: === Iteration 25 === [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 05:31:27,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:27,965 INFO L82 PathProgramCache]: Analyzing trace with hash -12168916, now seen corresponding path program 4 times [2020-12-22 05:31:27,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:27,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778513286] [2020-12-22 05:31:27,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:27,974 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:27,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2103735852] [2020-12-22 05:31:27,975 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:28,225 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:31:28,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:28,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 05:31:28,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:28,332 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:28,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778513286] [2020-12-22 05:31:28,333 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:28,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103735852] [2020-12-22 05:31:28,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:28,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:31:28,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763972393] [2020-12-22 05:31:28,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:31:28,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:28,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:31:28,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:31:28,335 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand 10 states. [2020-12-22 05:31:28,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:28,419 INFO L93 Difference]: Finished difference Result 141 states and 156 transitions. [2020-12-22 05:31:28,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:31:28,420 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-12-22 05:31:28,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:28,421 INFO L225 Difference]: With dead ends: 141 [2020-12-22 05:31:28,421 INFO L226 Difference]: Without dead ends: 131 [2020-12-22 05:31:28,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:31:28,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-22 05:31:28,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2020-12-22 05:31:28,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-22 05:31:28,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 144 transitions. [2020-12-22 05:31:28,435 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 144 transitions. Word has length 52 [2020-12-22 05:31:28,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:28,435 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 144 transitions. [2020-12-22 05:31:28,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:31:28,435 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 144 transitions. [2020-12-22 05:31:28,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 05:31:28,436 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:28,436 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:28,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 05:31:28,651 INFO L429 AbstractCegarLoop]: === Iteration 26 === [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 05:31:28,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:28,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1005826959, now seen corresponding path program 5 times [2020-12-22 05:31:28,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:28,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069654883] [2020-12-22 05:31:28,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:28,659 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:28,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788421275] [2020-12-22 05:31:28,660 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:28,747 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-12-22 05:31:28,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:28,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 05:31:28,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:28,861 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:28,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069654883] [2020-12-22 05:31:28,861 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:28,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788421275] [2020-12-22 05:31:28,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:28,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:31:28,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079288031] [2020-12-22 05:31:28,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:31:28,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:28,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:31:28,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:31:28,863 INFO L87 Difference]: Start difference. First operand 130 states and 144 transitions. Second operand 10 states. [2020-12-22 05:31:28,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:28,961 INFO L93 Difference]: Finished difference Result 140 states and 154 transitions. [2020-12-22 05:31:28,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 05:31:28,961 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-12-22 05:31:28,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:28,962 INFO L225 Difference]: With dead ends: 140 [2020-12-22 05:31:28,962 INFO L226 Difference]: Without dead ends: 132 [2020-12-22 05:31:28,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:31:28,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-22 05:31:28,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-12-22 05:31:28,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-22 05:31:28,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2020-12-22 05:31:28,976 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 59 [2020-12-22 05:31:28,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:28,977 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2020-12-22 05:31:28,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:31:28,977 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2020-12-22 05:31:28,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 05:31:28,977 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:28,978 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:29,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:29,190 INFO L429 AbstractCegarLoop]: === Iteration 27 === [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 05:31:29,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:29,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1674511849, now seen corresponding path program 5 times [2020-12-22 05:31:29,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:29,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8906327] [2020-12-22 05:31:29,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:29,210 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:29,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1181814220] [2020-12-22 05:31:29,211 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:29,347 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-22 05:31:29,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:29,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:31:29,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:29,476 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:29,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8906327] [2020-12-22 05:31:29,477 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:29,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181814220] [2020-12-22 05:31:29,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:29,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:31:29,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532261627] [2020-12-22 05:31:29,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:31:29,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:29,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:31:29,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:31:29,479 INFO L87 Difference]: Start difference. First operand 132 states and 146 transitions. Second operand 11 states. [2020-12-22 05:31:29,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:29,574 INFO L93 Difference]: Finished difference Result 163 states and 181 transitions. [2020-12-22 05:31:29,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:31:29,575 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-12-22 05:31:29,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:29,576 INFO L225 Difference]: With dead ends: 163 [2020-12-22 05:31:29,576 INFO L226 Difference]: Without dead ends: 153 [2020-12-22 05:31:29,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:31:29,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-12-22 05:31:29,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2020-12-22 05:31:29,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-22 05:31:29,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 169 transitions. [2020-12-22 05:31:29,593 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 169 transitions. Word has length 59 [2020-12-22 05:31:29,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:29,594 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 169 transitions. [2020-12-22 05:31:29,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:31:29,594 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 169 transitions. [2020-12-22 05:31:29,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 05:31:29,595 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:29,595 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:29,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 05:31:29,808 INFO L429 AbstractCegarLoop]: === Iteration 28 === [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 05:31:29,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:29,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1527902860, now seen corresponding path program 6 times [2020-12-22 05:31:29,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:29,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013595712] [2020-12-22 05:31:29,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:29,817 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:29,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216388607] [2020-12-22 05:31:29,817 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:29,926 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-12-22 05:31:29,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:29,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:31:29,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:30,080 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:30,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013595712] [2020-12-22 05:31:30,081 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:30,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216388607] [2020-12-22 05:31:30,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:30,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:31:30,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646339341] [2020-12-22 05:31:30,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:31:30,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:30,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:31:30,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:31:30,083 INFO L87 Difference]: Start difference. First operand 152 states and 169 transitions. Second operand 12 states. [2020-12-22 05:31:30,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:30,195 INFO L93 Difference]: Finished difference Result 187 states and 209 transitions. [2020-12-22 05:31:30,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 05:31:30,196 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-12-22 05:31:30,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:30,197 INFO L225 Difference]: With dead ends: 187 [2020-12-22 05:31:30,197 INFO L226 Difference]: Without dead ends: 175 [2020-12-22 05:31:30,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:31:30,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-12-22 05:31:30,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2020-12-22 05:31:30,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-12-22 05:31:30,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 194 transitions. [2020-12-22 05:31:30,215 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 194 transitions. Word has length 66 [2020-12-22 05:31:30,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:30,216 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 194 transitions. [2020-12-22 05:31:30,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:31:30,216 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 194 transitions. [2020-12-22 05:31:30,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 05:31:30,217 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:30,217 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:30,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-22 05:31:30,431 INFO L429 AbstractCegarLoop]: === Iteration 29 === [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 05:31:30,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:30,431 INFO L82 PathProgramCache]: Analyzing trace with hash -817031031, now seen corresponding path program 7 times [2020-12-22 05:31:30,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:30,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603890104] [2020-12-22 05:31:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:30,440 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:30,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502206113] [2020-12-22 05:31:30,440 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:31:30,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 05:31:30,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:30,690 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:30,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603890104] [2020-12-22 05:31:30,691 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:30,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502206113] [2020-12-22 05:31:30,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:30,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 05:31:30,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640757044] [2020-12-22 05:31:30,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:31:30,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:30,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:31:30,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:31:30,693 INFO L87 Difference]: Start difference. First operand 174 states and 194 transitions. Second operand 13 states. [2020-12-22 05:31:30,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:30,828 INFO L93 Difference]: Finished difference Result 209 states and 234 transitions. [2020-12-22 05:31:30,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 05:31:30,829 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 73 [2020-12-22 05:31:30,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:30,831 INFO L225 Difference]: With dead ends: 209 [2020-12-22 05:31:30,831 INFO L226 Difference]: Without dead ends: 197 [2020-12-22 05:31:30,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=220, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:31:30,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-22 05:31:30,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2020-12-22 05:31:30,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-12-22 05:31:30,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 219 transitions. [2020-12-22 05:31:30,850 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 219 transitions. Word has length 73 [2020-12-22 05:31:30,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:30,850 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 219 transitions. [2020-12-22 05:31:30,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:31:30,851 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 219 transitions. [2020-12-22 05:31:30,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 05:31:30,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:30,852 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:31,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-22 05:31:31,064 INFO L429 AbstractCegarLoop]: === Iteration 30 === [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 05:31:31,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:31,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1740090348, now seen corresponding path program 8 times [2020-12-22 05:31:31,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:31,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759627981] [2020-12-22 05:31:31,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:31,076 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:31,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183201064] [2020-12-22 05:31:31,076 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:31,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:31:31,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:31,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 05:31:31,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:31,375 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:31,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759627981] [2020-12-22 05:31:31,375 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:31,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183201064] [2020-12-22 05:31:31,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:31,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 05:31:31,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446390714] [2020-12-22 05:31:31,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 05:31:31,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:31,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 05:31:31,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-12-22 05:31:31,377 INFO L87 Difference]: Start difference. First operand 196 states and 219 transitions. Second operand 14 states. [2020-12-22 05:31:31,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:31,526 INFO L93 Difference]: Finished difference Result 231 states and 259 transitions. [2020-12-22 05:31:31,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 05:31:31,526 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 80 [2020-12-22 05:31:31,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:31,528 INFO L225 Difference]: With dead ends: 231 [2020-12-22 05:31:31,528 INFO L226 Difference]: Without dead ends: 219 [2020-12-22 05:31:31,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2020-12-22 05:31:31,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-12-22 05:31:31,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 218. [2020-12-22 05:31:31,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-22 05:31:31,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 244 transitions. [2020-12-22 05:31:31,548 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 244 transitions. Word has length 80 [2020-12-22 05:31:31,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:31,548 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 244 transitions. [2020-12-22 05:31:31,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 05:31:31,548 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 244 transitions. [2020-12-22 05:31:31,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 05:31:31,549 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:31,550 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:31,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:31,760 INFO L429 AbstractCegarLoop]: === Iteration 31 === [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 05:31:31,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:31,761 INFO L82 PathProgramCache]: Analyzing trace with hash -588901591, now seen corresponding path program 9 times [2020-12-22 05:31:31,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:31,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49773780] [2020-12-22 05:31:31,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:31,770 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:31,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565328009] [2020-12-22 05:31:31,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:31,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-12-22 05:31:31,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:31,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 05:31:31,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:32,178 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:32,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49773780] [2020-12-22 05:31:32,179 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:32,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565328009] [2020-12-22 05:31:32,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:32,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-22 05:31:32,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406282371] [2020-12-22 05:31:32,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 05:31:32,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:32,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 05:31:32,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:31:32,181 INFO L87 Difference]: Start difference. First operand 218 states and 244 transitions. Second operand 15 states. [2020-12-22 05:31:32,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:32,368 INFO L93 Difference]: Finished difference Result 253 states and 284 transitions. [2020-12-22 05:31:32,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 05:31:32,368 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 87 [2020-12-22 05:31:32,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:32,370 INFO L225 Difference]: With dead ends: 253 [2020-12-22 05:31:32,370 INFO L226 Difference]: Without dead ends: 241 [2020-12-22 05:31:32,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=181, Invalid=325, Unknown=0, NotChecked=0, Total=506 [2020-12-22 05:31:32,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-12-22 05:31:32,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2020-12-22 05:31:32,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-12-22 05:31:32,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 269 transitions. [2020-12-22 05:31:32,398 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 269 transitions. Word has length 87 [2020-12-22 05:31:32,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:32,398 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 269 transitions. [2020-12-22 05:31:32,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 05:31:32,398 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 269 transitions. [2020-12-22 05:31:32,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 05:31:32,401 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:32,401 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:32,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-12-22 05:31:32,616 INFO L429 AbstractCegarLoop]: === Iteration 32 === [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 05:31:32,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:32,616 INFO L82 PathProgramCache]: Analyzing trace with hash 833453388, now seen corresponding path program 10 times [2020-12-22 05:31:32,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:32,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544953752] [2020-12-22 05:31:32,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:32,625 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:32,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807219301] [2020-12-22 05:31:32,625 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:32,796 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:31:32,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:31:32,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 05:31:32,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:31:33,022 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:31:33,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544953752] [2020-12-22 05:31:33,023 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:31:33,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807219301] [2020-12-22 05:31:33,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:31:33,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-22 05:31:33,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920725377] [2020-12-22 05:31:33,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 05:31:33,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:31:33,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 05:31:33,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:31:33,025 INFO L87 Difference]: Start difference. First operand 240 states and 269 transitions. Second operand 16 states. [2020-12-22 05:31:33,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:33,241 INFO L93 Difference]: Finished difference Result 275 states and 309 transitions. [2020-12-22 05:31:33,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 05:31:33,242 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 94 [2020-12-22 05:31:33,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:33,244 INFO L225 Difference]: With dead ends: 275 [2020-12-22 05:31:33,244 INFO L226 Difference]: Without dead ends: 263 [2020-12-22 05:31:33,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=215, Invalid=385, Unknown=0, NotChecked=0, Total=600 [2020-12-22 05:31:33,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-12-22 05:31:33,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2020-12-22 05:31:33,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-12-22 05:31:33,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 294 transitions. [2020-12-22 05:31:33,268 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 294 transitions. Word has length 94 [2020-12-22 05:31:33,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:33,268 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 294 transitions. [2020-12-22 05:31:33,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 05:31:33,268 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 294 transitions. [2020-12-22 05:31:33,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 05:31:33,269 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:31:33,270 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:31:33,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:31:33,475 INFO L429 AbstractCegarLoop]: === Iteration 33 === [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 05:31:33,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:31:33,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1352403511, now seen corresponding path program 11 times [2020-12-22 05:31:33,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:31:33,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418805866] [2020-12-22 05:31:33,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:31:33,499 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:31:33,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1627317254] [2020-12-22 05:31:33,499 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:34:22,733 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-12-22 05:34:22,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:34:22,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 05:34:22,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:34:23,042 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 0 proven. 359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:34:23,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418805866] [2020-12-22 05:34:23,044 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:34:23,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627317254] [2020-12-22 05:34:23,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:34:23,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-12-22 05:34:23,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347675319] [2020-12-22 05:34:23,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 05:34:23,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:34:23,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 05:34:23,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:34:23,047 INFO L87 Difference]: Start difference. First operand 262 states and 294 transitions. Second operand 17 states. [2020-12-22 05:34:23,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:34:23,281 INFO L93 Difference]: Finished difference Result 297 states and 334 transitions. [2020-12-22 05:34:23,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 05:34:23,281 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 101 [2020-12-22 05:34:23,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:34:23,283 INFO L225 Difference]: With dead ends: 297 [2020-12-22 05:34:23,283 INFO L226 Difference]: Without dead ends: 285 [2020-12-22 05:34:23,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=252, Invalid=450, Unknown=0, NotChecked=0, Total=702 [2020-12-22 05:34:23,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-12-22 05:34:23,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 284. [2020-12-22 05:34:23,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-12-22 05:34:23,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 319 transitions. [2020-12-22 05:34:23,311 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 319 transitions. Word has length 101 [2020-12-22 05:34:23,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:34:23,312 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 319 transitions. [2020-12-22 05:34:23,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 05:34:23,312 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 319 transitions. [2020-12-22 05:34:23,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 05:34:23,313 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:34:23,314 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:34:23,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-22 05:34:23,528 INFO L429 AbstractCegarLoop]: === Iteration 34 === [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 05:34:23,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:34:23,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1092000084, now seen corresponding path program 12 times [2020-12-22 05:34:23,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:34:23,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043559123] [2020-12-22 05:34:23,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:34:23,537 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:34:23,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150829853] [2020-12-22 05:34:23,538 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:34:24,560 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-12-22 05:34:24,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:34:24,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 05:34:24,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:34:24,869 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:34:24,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043559123] [2020-12-22 05:34:24,869 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:34:24,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150829853] [2020-12-22 05:34:24,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:34:24,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-12-22 05:34:24,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774838890] [2020-12-22 05:34:24,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 05:34:24,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:34:24,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 05:34:24,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:34:24,871 INFO L87 Difference]: Start difference. First operand 284 states and 319 transitions. Second operand 18 states. [2020-12-22 05:34:25,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:34:25,125 INFO L93 Difference]: Finished difference Result 319 states and 359 transitions. [2020-12-22 05:34:25,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-22 05:34:25,125 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 108 [2020-12-22 05:34:25,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:34:25,127 INFO L225 Difference]: With dead ends: 319 [2020-12-22 05:34:25,127 INFO L226 Difference]: Without dead ends: 307 [2020-12-22 05:34:25,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=292, Invalid=520, Unknown=0, NotChecked=0, Total=812 [2020-12-22 05:34:25,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-12-22 05:34:25,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 306. [2020-12-22 05:34:25,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-12-22 05:34:25,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 344 transitions. [2020-12-22 05:34:25,157 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 344 transitions. Word has length 108 [2020-12-22 05:34:25,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:34:25,157 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 344 transitions. [2020-12-22 05:34:25,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 05:34:25,157 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 344 transitions. [2020-12-22 05:34:25,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-22 05:34:25,159 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:34:25,159 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:34:25,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-22 05:34:25,364 INFO L429 AbstractCegarLoop]: === Iteration 35 === [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 05:34:25,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:34:25,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1072643991, now seen corresponding path program 13 times [2020-12-22 05:34:25,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:34:25,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795448332] [2020-12-22 05:34:25,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:34:25,373 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:34:25,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907840849] [2020-12-22 05:34:25,374 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:34:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:34:25,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 05:34:25,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:34:25,827 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:34:25,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795448332] [2020-12-22 05:34:25,827 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:34:25,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907840849] [2020-12-22 05:34:25,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:34:25,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-12-22 05:34:25,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863940696] [2020-12-22 05:34:25,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 05:34:25,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:34:25,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 05:34:25,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:34:25,829 INFO L87 Difference]: Start difference. First operand 306 states and 344 transitions. Second operand 19 states. [2020-12-22 05:34:26,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:34:26,117 INFO L93 Difference]: Finished difference Result 341 states and 384 transitions. [2020-12-22 05:34:26,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-22 05:34:26,118 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 115 [2020-12-22 05:34:26,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:34:26,120 INFO L225 Difference]: With dead ends: 341 [2020-12-22 05:34:26,120 INFO L226 Difference]: Without dead ends: 329 [2020-12-22 05:34:26,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=335, Invalid=595, Unknown=0, NotChecked=0, Total=930 [2020-12-22 05:34:26,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-12-22 05:34:26,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 328. [2020-12-22 05:34:26,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-12-22 05:34:26,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 369 transitions. [2020-12-22 05:34:26,150 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 369 transitions. Word has length 115 [2020-12-22 05:34:26,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:34:26,151 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 369 transitions. [2020-12-22 05:34:26,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 05:34:26,151 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 369 transitions. [2020-12-22 05:34:26,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-22 05:34:26,152 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:34:26,153 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:34:26,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-22 05:34:26,368 INFO L429 AbstractCegarLoop]: === Iteration 36 === [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 05:34:26,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:34:26,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1860265996, now seen corresponding path program 14 times [2020-12-22 05:34:26,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:34:26,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125244698] [2020-12-22 05:34:26,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:34:26,377 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:34:26,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017879008] [2020-12-22 05:34:26,378 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 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:34:26,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:34:26,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:34:26,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-22 05:34:26,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:34:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:34:26,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125244698] [2020-12-22 05:34:26,837 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:34:26,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017879008] [2020-12-22 05:34:26,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:34:26,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-12-22 05:34:26,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741849648] [2020-12-22 05:34:26,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-22 05:34:26,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:34:26,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-22 05:34:26,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-12-22 05:34:26,839 INFO L87 Difference]: Start difference. First operand 328 states and 369 transitions. Second operand 20 states. [2020-12-22 05:34:27,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:34:27,150 INFO L93 Difference]: Finished difference Result 363 states and 409 transitions. [2020-12-22 05:34:27,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-22 05:34:27,151 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 122 [2020-12-22 05:34:27,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:34:27,153 INFO L225 Difference]: With dead ends: 363 [2020-12-22 05:34:27,154 INFO L226 Difference]: Without dead ends: 351 [2020-12-22 05:34:27,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=381, Invalid=675, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 05:34:27,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-12-22 05:34:27,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 350. [2020-12-22 05:34:27,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-12-22 05:34:27,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 394 transitions. [2020-12-22 05:34:27,182 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 394 transitions. Word has length 122 [2020-12-22 05:34:27,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:34:27,182 INFO L481 AbstractCegarLoop]: Abstraction has 350 states and 394 transitions. [2020-12-22 05:34:27,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-22 05:34:27,183 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 394 transitions. [2020-12-22 05:34:27,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 05:34:27,184 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:34:27,184 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:34:27,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-22 05:34:27,402 INFO L429 AbstractCegarLoop]: === Iteration 37 === [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 05:34:27,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:34:27,402 INFO L82 PathProgramCache]: Analyzing trace with hash 2125886217, now seen corresponding path program 15 times [2020-12-22 05:34:27,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:34:27,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770677377] [2020-12-22 05:34:27,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:34:27,411 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:34:27,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1978357191] [2020-12-22 05:34:27,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:34:27,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2020-12-22 05:34:27,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:34:27,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 05:34:27,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:34:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 0 proven. 689 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:34:28,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770677377] [2020-12-22 05:34:28,252 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:34:28,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978357191] [2020-12-22 05:34:28,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:34:28,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-12-22 05:34:28,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810040116] [2020-12-22 05:34:28,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-22 05:34:28,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:34:28,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-22 05:34:28,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-12-22 05:34:28,254 INFO L87 Difference]: Start difference. First operand 350 states and 394 transitions. Second operand 21 states. [2020-12-22 05:34:28,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:34:28,606 INFO L93 Difference]: Finished difference Result 385 states and 434 transitions. [2020-12-22 05:34:28,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-22 05:34:28,606 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 129 [2020-12-22 05:34:28,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:34:28,608 INFO L225 Difference]: With dead ends: 385 [2020-12-22 05:34:28,609 INFO L226 Difference]: Without dead ends: 373 [2020-12-22 05:34:28,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=430, Invalid=760, Unknown=0, NotChecked=0, Total=1190 [2020-12-22 05:34:28,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-12-22 05:34:28,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 372. [2020-12-22 05:34:28,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-12-22 05:34:28,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 419 transitions. [2020-12-22 05:34:28,641 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 419 transitions. Word has length 129 [2020-12-22 05:34:28,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:34:28,642 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 419 transitions. [2020-12-22 05:34:28,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-22 05:34:28,642 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 419 transitions. [2020-12-22 05:34:28,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-22 05:34:28,644 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:34:28,644 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:34:28,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-22 05:34:28,850 INFO L429 AbstractCegarLoop]: === Iteration 38 === [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 05:34:28,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:34:28,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1519092076, now seen corresponding path program 16 times [2020-12-22 05:34:28,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:34:28,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825903972] [2020-12-22 05:34:28,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:34:28,860 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:34:28,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751695800] [2020-12-22 05:34:28,861 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:34:30,457 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:34:30,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:34:30,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 05:34:30,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:34:30,896 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 0 proven. 789 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:34:30,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825903972] [2020-12-22 05:34:30,897 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:34:30,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751695800] [2020-12-22 05:34:30,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:34:30,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-12-22 05:34:30,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296182457] [2020-12-22 05:34:30,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 05:34:30,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:34:30,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 05:34:30,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-12-22 05:34:30,898 INFO L87 Difference]: Start difference. First operand 372 states and 419 transitions. Second operand 22 states. [2020-12-22 05:34:31,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:34:31,332 INFO L93 Difference]: Finished difference Result 407 states and 459 transitions. [2020-12-22 05:34:31,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-22 05:34:31,332 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 136 [2020-12-22 05:34:31,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:34:31,335 INFO L225 Difference]: With dead ends: 407 [2020-12-22 05:34:31,335 INFO L226 Difference]: Without dead ends: 395 [2020-12-22 05:34:31,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=482, Invalid=850, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 05:34:31,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-12-22 05:34:31,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 394. [2020-12-22 05:34:31,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-12-22 05:34:31,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 444 transitions. [2020-12-22 05:34:31,370 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 444 transitions. Word has length 136 [2020-12-22 05:34:31,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:34:31,370 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 444 transitions. [2020-12-22 05:34:31,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 05:34:31,370 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 444 transitions. [2020-12-22 05:34:31,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 05:34:31,372 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:34:31,372 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:34:31,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-12-22 05:34:31,583 INFO L429 AbstractCegarLoop]: === Iteration 39 === [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 05:34:31,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:34:31,584 INFO L82 PathProgramCache]: Analyzing trace with hash -241234519, now seen corresponding path program 17 times [2020-12-22 05:34:31,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:34:31,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069040574] [2020-12-22 05:34:31,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:34:31,592 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:34:31,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488819581] [2020-12-22 05:34:31,593 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true