/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:12:37,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:12:37,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:12:37,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:12:37,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:12:37,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:12:37,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:12:37,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:12:37,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:12:37,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:12:37,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:12:37,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:12:37,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:12:37,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:12:37,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:12:37,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:12:37,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:12:37,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:12:37,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:12:37,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:12:37,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:12:37,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:12:37,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:12:37,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:12:37,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:12:37,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:12:37,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:12:37,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:12:37,754 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:12:37,805 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:12:37,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:12:37,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:12:37,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:12:37,811 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:12:37,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:12:37,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:12:37,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:12:37,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:12:37,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:12:37,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:12:37,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:12:37,813 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:12:37,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:12:37,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:12:37,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:12:37,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:12:37,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:12:37,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:12:37,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:12:37,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:12:37,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:12:37,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:12:37,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:12:37,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:12:37,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:12:38,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:12:38,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:12:38,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:12:38,260 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:12:38,261 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:12:38,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c [2020-12-22 05:12:38,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ff39828e/edf5c49c09ab42ac83334fa4dc0bf944/FLAGefed3e9ef [2020-12-22 05:12:39,030 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:12:39,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c [2020-12-22 05:12:39,041 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ff39828e/edf5c49c09ab42ac83334fa4dc0bf944/FLAGefed3e9ef [2020-12-22 05:12:39,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ff39828e/edf5c49c09ab42ac83334fa4dc0bf944 [2020-12-22 05:12:39,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:12:39,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:12:39,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:12:39,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:12:39,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:12:39,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:12:39" (1/1) ... [2020-12-22 05:12:39,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b6f8942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:39, skipping insertion in model container [2020-12-22 05:12:39,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:12:39" (1/1) ... [2020-12-22 05:12:39,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:12:39,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:12:39,578 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c[489,502] [2020-12-22 05:12:39,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:12:39,633 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:12:39,652 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c[489,502] [2020-12-22 05:12:39,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:12:39,707 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:12:39,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:39 WrapperNode [2020-12-22 05:12:39,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:12:39,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:12:39,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:12:39,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:12:39,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:39" (1/1) ... [2020-12-22 05:12:39,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:39" (1/1) ... [2020-12-22 05:12:39,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:12:39,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:12:39,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:12:39,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:12:39,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:39" (1/1) ... [2020-12-22 05:12:39,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:39" (1/1) ... [2020-12-22 05:12:39,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:39" (1/1) ... [2020-12-22 05:12:39,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:39" (1/1) ... [2020-12-22 05:12:39,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:39" (1/1) ... [2020-12-22 05:12:39,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:39" (1/1) ... [2020-12-22 05:12:39,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:39" (1/1) ... [2020-12-22 05:12:39,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:12:39,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:12:39,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:12:39,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:12:39,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:12:39,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:12:39,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:12:39,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:12:39,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:12:40,421 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:12:40,422 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2020-12-22 05:12:40,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:12:40 BoogieIcfgContainer [2020-12-22 05:12:40,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:12:40,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:12:40,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:12:40,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:12:40,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:12:39" (1/3) ... [2020-12-22 05:12:40,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a373bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:12:40, skipping insertion in model container [2020-12-22 05:12:40,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:12:39" (2/3) ... [2020-12-22 05:12:40,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a373bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:12:40, skipping insertion in model container [2020-12-22 05:12:40,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:12:40" (3/3) ... [2020-12-22 05:12:40,433 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound50.c [2020-12-22 05:12:40,439 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:12:40,444 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 05:12:40,465 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 05:12:40,492 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:12:40,492 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:12:40,492 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:12:40,493 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:12:40,493 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:12:40,493 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:12:40,493 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:12:40,493 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:12:40,510 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-12-22 05:12:40,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:12:40,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:40,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:40,517 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:40,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:40,523 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2020-12-22 05:12:40,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:40,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913592762] [2020-12-22 05:12:40,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:40,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:40,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913592762] [2020-12-22 05:12:40,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:12:40,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:12:40,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661950521] [2020-12-22 05:12:40,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:12:40,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:40,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:12:40,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:12:40,718 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2020-12-22 05:12:40,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:40,740 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2020-12-22 05:12:40,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:12:40,742 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-22 05:12:40,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:40,752 INFO L225 Difference]: With dead ends: 85 [2020-12-22 05:12:40,752 INFO L226 Difference]: Without dead ends: 40 [2020-12-22 05:12:40,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:12:40,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-22 05:12:40,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-12-22 05:12:40,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-22 05:12:40,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-12-22 05:12:40,799 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 13 [2020-12-22 05:12:40,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:40,800 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-12-22 05:12:40,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:12:40,800 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-12-22 05:12:40,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:12:40,801 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:40,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:40,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:12:40,802 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:40,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:40,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2020-12-22 05:12:40,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:40,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627607968] [2020-12-22 05:12:40,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:40,831 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:40,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2136326885] [2020-12-22 05:12:40,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:40,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:12:40,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:41,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:41,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627607968] [2020-12-22 05:12:41,106 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:41,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136326885] [2020-12-22 05:12:41,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:12:41,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:12:41,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052659773] [2020-12-22 05:12:41,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:12:41,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:41,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:12:41,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:12:41,111 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 5 states. [2020-12-22 05:12:41,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:41,340 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-12-22 05:12:41,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:12:41,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 05:12:41,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:41,342 INFO L225 Difference]: With dead ends: 70 [2020-12-22 05:12:41,343 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 05:12:41,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:12:41,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 05:12:41,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-12-22 05:12:41,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-22 05:12:41,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2020-12-22 05:12:41,356 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 13 [2020-12-22 05:12:41,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:41,357 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2020-12-22 05:12:41,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:12:41,357 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2020-12-22 05:12:41,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:12:41,358 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:41,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:41,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:12:41,572 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:41,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:41,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1454243009, now seen corresponding path program 1 times [2020-12-22 05:12:41,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:41,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335299622] [2020-12-22 05:12:41,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:41,619 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:41,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012990213] [2020-12-22 05:12:41,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:41,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-22 05:12:41,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:42,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335299622] [2020-12-22 05:12:42,264 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:42,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012990213] [2020-12-22 05:12:42,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:12:42,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 05:12:42,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993407007] [2020-12-22 05:12:42,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:12:42,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:42,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:12:42,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:12:42,267 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand 12 states. [2020-12-22 05:12:42,661 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 12 [2020-12-22 05:12:42,795 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 18 [2020-12-22 05:12:42,941 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 20 [2020-12-22 05:12:43,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:43,071 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2020-12-22 05:12:43,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:12:43,072 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-12-22 05:12:43,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:43,075 INFO L225 Difference]: With dead ends: 98 [2020-12-22 05:12:43,076 INFO L226 Difference]: Without dead ends: 96 [2020-12-22 05:12:43,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:12:43,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-22 05:12:43,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 70. [2020-12-22 05:12:43,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-22 05:12:43,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2020-12-22 05:12:43,091 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 15 [2020-12-22 05:12:43,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:43,092 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2020-12-22 05:12:43,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:12:43,092 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2020-12-22 05:12:43,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 05:12:43,093 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:43,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:43,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:43,307 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:43,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:43,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1663317220, now seen corresponding path program 1 times [2020-12-22 05:12:43,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:43,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276000159] [2020-12-22 05:12:43,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:43,327 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:43,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394000035] [2020-12-22 05:12:43,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:43,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:12:43,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:43,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:43,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276000159] [2020-12-22 05:12:43,630 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:43,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394000035] [2020-12-22 05:12:43,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:12:43,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 05:12:43,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780210566] [2020-12-22 05:12:43,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:12:43,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:43,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:12:43,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:12:43,640 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand 8 states. [2020-12-22 05:12:43,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:43,992 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-12-22 05:12:43,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:12:43,993 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-12-22 05:12:43,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:43,994 INFO L225 Difference]: With dead ends: 84 [2020-12-22 05:12:43,994 INFO L226 Difference]: Without dead ends: 76 [2020-12-22 05:12:43,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:12:43,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-22 05:12:44,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2020-12-22 05:12:44,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-22 05:12:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2020-12-22 05:12:44,005 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 17 [2020-12-22 05:12:44,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:44,006 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2020-12-22 05:12:44,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:12:44,006 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2020-12-22 05:12:44,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 05:12:44,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:44,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:44,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:44,223 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:44,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:44,224 INFO L82 PathProgramCache]: Analyzing trace with hash 850548497, now seen corresponding path program 1 times [2020-12-22 05:12:44,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:44,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541762475] [2020-12-22 05:12:44,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:44,242 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:44,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135109896] [2020-12-22 05:12:44,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:44,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 05:12:44,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:44,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:44,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541762475] [2020-12-22 05:12:44,362 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:44,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135109896] [2020-12-22 05:12:44,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:12:44,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:12:44,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062091467] [2020-12-22 05:12:44,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:12:44,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:44,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:12:44,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:12:44,367 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand 4 states. [2020-12-22 05:12:44,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:44,451 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2020-12-22 05:12:44,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:12:44,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-22 05:12:44,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:44,455 INFO L225 Difference]: With dead ends: 68 [2020-12-22 05:12:44,455 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 05:12:44,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:12:44,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 05:12:44,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-22 05:12:44,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 05:12:44,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2020-12-22 05:12:44,480 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 20 [2020-12-22 05:12:44,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:44,481 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2020-12-22 05:12:44,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:12:44,481 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2020-12-22 05:12:44,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 05:12:44,482 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:44,482 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:44,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:44,697 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:44,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:44,698 INFO L82 PathProgramCache]: Analyzing trace with hash 598848193, now seen corresponding path program 1 times [2020-12-22 05:12:44,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:44,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897058651] [2020-12-22 05:12:44,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:44,723 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:44,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346084431] [2020-12-22 05:12:44,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:44,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:12:44,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 05:12:44,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897058651] [2020-12-22 05:12:44,878 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:44,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346084431] [2020-12-22 05:12:44,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:44,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:12:44,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464383795] [2020-12-22 05:12:44,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:12:44,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:44,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:12:44,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:12:44,881 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand 5 states. [2020-12-22 05:12:45,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:45,041 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2020-12-22 05:12:45,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:12:45,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-12-22 05:12:45,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:45,043 INFO L225 Difference]: With dead ends: 88 [2020-12-22 05:12:45,043 INFO L226 Difference]: Without dead ends: 84 [2020-12-22 05:12:45,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:12:45,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-22 05:12:45,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 72. [2020-12-22 05:12:45,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-22 05:12:45,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2020-12-22 05:12:45,052 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 21 [2020-12-22 05:12:45,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:45,053 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2020-12-22 05:12:45,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:12:45,053 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2020-12-22 05:12:45,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 05:12:45,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:45,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:45,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 05:12:45,270 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:45,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:45,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1333477300, now seen corresponding path program 1 times [2020-12-22 05:12:45,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:45,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137039423] [2020-12-22 05:12:45,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:45,286 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:45,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043338766] [2020-12-22 05:12:45,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:45,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 05:12:45,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:45,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137039423] [2020-12-22 05:12:45,542 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:45,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043338766] [2020-12-22 05:12:45,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:12:45,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 05:12:45,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637361918] [2020-12-22 05:12:45,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:12:45,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:45,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:12:45,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:12:45,544 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 8 states. [2020-12-22 05:12:45,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:45,813 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-12-22 05:12:45,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:12:45,814 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-12-22 05:12:45,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:45,815 INFO L225 Difference]: With dead ends: 80 [2020-12-22 05:12:45,816 INFO L226 Difference]: Without dead ends: 72 [2020-12-22 05:12:45,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:12:45,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-22 05:12:45,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-12-22 05:12:45,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-22 05:12:45,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-12-22 05:12:45,827 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 22 [2020-12-22 05:12:45,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:45,828 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-12-22 05:12:45,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:12:45,828 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-12-22 05:12:45,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 05:12:45,829 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:45,829 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:46,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:46,043 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:46,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:46,044 INFO L82 PathProgramCache]: Analyzing trace with hash -89606074, now seen corresponding path program 1 times [2020-12-22 05:12:46,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:46,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434278296] [2020-12-22 05:12:46,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:46,061 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:46,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1627938158] [2020-12-22 05:12:46,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:46,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-22 05:12:46,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:46,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:46,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434278296] [2020-12-22 05:12:46,421 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:46,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627938158] [2020-12-22 05:12:46,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:46,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:12:46,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717537805] [2020-12-22 05:12:46,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:12:46,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:46,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:12:46,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:12:46,428 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 9 states. [2020-12-22 05:12:46,691 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 23 [2020-12-22 05:12:46,827 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 25 [2020-12-22 05:12:47,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:47,302 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2020-12-22 05:12:47,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:12:47,304 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-12-22 05:12:47,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:47,304 INFO L225 Difference]: With dead ends: 105 [2020-12-22 05:12:47,305 INFO L226 Difference]: Without dead ends: 103 [2020-12-22 05:12:47,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:12:47,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-22 05:12:47,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 74. [2020-12-22 05:12:47,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-22 05:12:47,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-12-22 05:12:47,316 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 23 [2020-12-22 05:12:47,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:47,317 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-12-22 05:12:47,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:12:47,317 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-12-22 05:12:47,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 05:12:47,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:47,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:47,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:47,534 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:47,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:47,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1021281049, now seen corresponding path program 1 times [2020-12-22 05:12:47,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:47,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137020561] [2020-12-22 05:12:47,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:47,549 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:47,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888380597] [2020-12-22 05:12:47,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:47,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 45 conjunts are in the unsatisfiable core [2020-12-22 05:12:47,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:47,994 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:47,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137020561] [2020-12-22 05:12:47,995 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:47,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888380597] [2020-12-22 05:12:47,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:47,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:12:47,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860369855] [2020-12-22 05:12:47,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:12:47,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:47,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:12:47,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:12:47,998 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 11 states. [2020-12-22 05:12:48,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:48,631 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-12-22 05:12:48,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:12:48,632 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-12-22 05:12:48,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:48,633 INFO L225 Difference]: With dead ends: 118 [2020-12-22 05:12:48,633 INFO L226 Difference]: Without dead ends: 104 [2020-12-22 05:12:48,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:12:48,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-12-22 05:12:48,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2020-12-22 05:12:48,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-22 05:12:48,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2020-12-22 05:12:48,647 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 25 [2020-12-22 05:12:48,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:48,647 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2020-12-22 05:12:48,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:12:48,648 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2020-12-22 05:12:48,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 05:12:48,649 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:48,649 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:48,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 05:12:48,864 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:48,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:48,865 INFO L82 PathProgramCache]: Analyzing trace with hash 477321350, now seen corresponding path program 1 times [2020-12-22 05:12:48,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:48,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924620667] [2020-12-22 05:12:48,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:48,895 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:48,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028495477] [2020-12-22 05:12:48,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:48,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 05:12:48,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:49,160 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:49,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924620667] [2020-12-22 05:12:49,161 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:49,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028495477] [2020-12-22 05:12:49,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:49,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:12:49,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747430577] [2020-12-22 05:12:49,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:12:49,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:49,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:12:49,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:12:49,162 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand 8 states. [2020-12-22 05:12:49,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:49,650 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2020-12-22 05:12:49,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:12:49,651 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-12-22 05:12:49,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:49,652 INFO L225 Difference]: With dead ends: 116 [2020-12-22 05:12:49,652 INFO L226 Difference]: Without dead ends: 106 [2020-12-22 05:12:49,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:12:49,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-22 05:12:49,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2020-12-22 05:12:49,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-22 05:12:49,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2020-12-22 05:12:49,665 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 29 [2020-12-22 05:12:49,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:49,666 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2020-12-22 05:12:49,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:12:49,666 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2020-12-22 05:12:49,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 05:12:49,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:49,667 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:49,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:49,883 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:49,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:49,884 INFO L82 PathProgramCache]: Analyzing trace with hash 219215494, now seen corresponding path program 2 times [2020-12-22 05:12:49,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:49,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071167004] [2020-12-22 05:12:49,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:49,898 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:49,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746050850] [2020-12-22 05:12:49,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:49,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:12:49,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:12:49,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 05:12:49,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:50,162 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:50,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071167004] [2020-12-22 05:12:50,163 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:50,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746050850] [2020-12-22 05:12:50,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:50,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:12:50,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568615603] [2020-12-22 05:12:50,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:12:50,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:50,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:12:50,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:12:50,165 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand 8 states. [2020-12-22 05:12:50,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:50,881 INFO L93 Difference]: Finished difference Result 131 states and 147 transitions. [2020-12-22 05:12:50,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:12:50,882 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-12-22 05:12:50,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:50,883 INFO L225 Difference]: With dead ends: 131 [2020-12-22 05:12:50,883 INFO L226 Difference]: Without dead ends: 127 [2020-12-22 05:12:50,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:12:50,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-22 05:12:50,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 114. [2020-12-22 05:12:50,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-12-22 05:12:50,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-12-22 05:12:50,898 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 29 [2020-12-22 05:12:50,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:50,898 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-12-22 05:12:50,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:12:50,899 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-12-22 05:12:50,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:12:50,900 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:50,900 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:51,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:51,111 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:51,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:51,111 INFO L82 PathProgramCache]: Analyzing trace with hash -855526903, now seen corresponding path program 1 times [2020-12-22 05:12:51,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:51,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106448813] [2020-12-22 05:12:51,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:51,122 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:51,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727964479] [2020-12-22 05:12:51,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:51,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 05:12:51,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:51,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106448813] [2020-12-22 05:12:51,457 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:51,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727964479] [2020-12-22 05:12:51,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:51,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:12:51,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478567198] [2020-12-22 05:12:51,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:12:51,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:51,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:12:51,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:12:51,459 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 8 states. [2020-12-22 05:12:51,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:51,909 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions. [2020-12-22 05:12:51,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:12:51,910 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-22 05:12:51,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:51,911 INFO L225 Difference]: With dead ends: 142 [2020-12-22 05:12:51,911 INFO L226 Difference]: Without dead ends: 140 [2020-12-22 05:12:51,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:12:51,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-22 05:12:51,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 114. [2020-12-22 05:12:51,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-12-22 05:12:51,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2020-12-22 05:12:51,928 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 31 [2020-12-22 05:12:51,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:51,928 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2020-12-22 05:12:51,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:12:51,929 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2020-12-22 05:12:51,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:12:51,929 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:51,930 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:52,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 05:12:52,143 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:52,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:52,144 INFO L82 PathProgramCache]: Analyzing trace with hash 155590347, now seen corresponding path program 2 times [2020-12-22 05:12:52,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:52,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968562206] [2020-12-22 05:12:52,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:52,155 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:52,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [449311364] [2020-12-22 05:12:52,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:52,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:12:52,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:12:52,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-22 05:12:52,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:52,669 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:52,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968562206] [2020-12-22 05:12:52,670 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:52,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449311364] [2020-12-22 05:12:52,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:52,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:12:52,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707394049] [2020-12-22 05:12:52,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:12:52,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:52,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:12:52,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:12:52,672 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand 11 states. [2020-12-22 05:12:53,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:53,526 INFO L93 Difference]: Finished difference Result 148 states and 166 transitions. [2020-12-22 05:12:53,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:12:53,527 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-12-22 05:12:53,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:53,528 INFO L225 Difference]: With dead ends: 148 [2020-12-22 05:12:53,528 INFO L226 Difference]: Without dead ends: 146 [2020-12-22 05:12:53,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:12:53,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-12-22 05:12:53,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 118. [2020-12-22 05:12:53,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-22 05:12:53,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 134 transitions. [2020-12-22 05:12:53,545 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 134 transitions. Word has length 31 [2020-12-22 05:12:53,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:53,546 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 134 transitions. [2020-12-22 05:12:53,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:12:53,546 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 134 transitions. [2020-12-22 05:12:53,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:12:53,547 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:53,547 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:53,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 05:12:53,763 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:53,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:53,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1663177194, now seen corresponding path program 2 times [2020-12-22 05:12:53,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:53,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547898370] [2020-12-22 05:12:53,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:53,775 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:53,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106670331] [2020-12-22 05:12:53,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:53,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:12:53,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:12:53,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 44 conjunts are in the unsatisfiable core [2020-12-22 05:12:53,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:54,148 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:54,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547898370] [2020-12-22 05:12:54,148 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:54,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106670331] [2020-12-22 05:12:54,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:54,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:12:54,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114983818] [2020-12-22 05:12:54,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:12:54,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:54,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:12:54,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:12:54,151 INFO L87 Difference]: Start difference. First operand 118 states and 134 transitions. Second operand 9 states. [2020-12-22 05:12:54,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:54,572 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions. [2020-12-22 05:12:54,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:12:54,573 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-12-22 05:12:54,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:54,574 INFO L225 Difference]: With dead ends: 160 [2020-12-22 05:12:54,574 INFO L226 Difference]: Without dead ends: 148 [2020-12-22 05:12:54,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:12:54,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-22 05:12:54,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 126. [2020-12-22 05:12:54,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-12-22 05:12:54,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2020-12-22 05:12:54,592 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 33 [2020-12-22 05:12:54,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:54,593 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2020-12-22 05:12:54,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:12:54,593 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2020-12-22 05:12:54,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:12:54,594 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:54,594 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:54,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 05:12:54,807 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:54,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:54,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1610721748, now seen corresponding path program 1 times [2020-12-22 05:12:54,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:54,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426441971] [2020-12-22 05:12:54,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:54,819 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:54,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195876793] [2020-12-22 05:12:54,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:12:54,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 05:12:54,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:55,112 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:12:55,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426441971] [2020-12-22 05:12:55,112 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:55,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195876793] [2020-12-22 05:12:55,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:55,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:12:55,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105742916] [2020-12-22 05:12:55,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:12:55,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:55,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:12:55,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:12:55,114 INFO L87 Difference]: Start difference. First operand 126 states and 143 transitions. Second operand 8 states. [2020-12-22 05:12:55,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:12:55,616 INFO L93 Difference]: Finished difference Result 159 states and 177 transitions. [2020-12-22 05:12:55,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:12:55,617 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-12-22 05:12:55,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:12:55,618 INFO L225 Difference]: With dead ends: 159 [2020-12-22 05:12:55,618 INFO L226 Difference]: Without dead ends: 147 [2020-12-22 05:12:55,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:12:55,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-12-22 05:12:55,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 119. [2020-12-22 05:12:55,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-12-22 05:12:55,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2020-12-22 05:12:55,634 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 33 [2020-12-22 05:12:55,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:12:55,634 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2020-12-22 05:12:55,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:12:55,634 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2020-12-22 05:12:55,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:12:55,635 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:12:55,635 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:12:55,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:55,848 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:12:55,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:12:55,849 INFO L82 PathProgramCache]: Analyzing trace with hash 130855945, now seen corresponding path program 3 times [2020-12-22 05:12:55,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:12:55,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585144694] [2020-12-22 05:12:55,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:12:55,859 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:12:55,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [457062091] [2020-12-22 05:12:55,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:12:55,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 05:12:55,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:12:55,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 05:12:55,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:12:56,318 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 05:12:56,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585144694] [2020-12-22 05:12:56,319 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:12:56,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457062091] [2020-12-22 05:12:56,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:12:56,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:12:56,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795848054] [2020-12-22 05:12:56,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:12:56,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:12:56,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:12:56,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:12:56,321 INFO L87 Difference]: Start difference. First operand 119 states and 134 transitions. Second operand 11 states. [2020-12-22 05:13:00,856 WARN L197 SmtUtils]: Spent 4.09 s on a formula simplification that was a NOOP. DAG size: 17 [2020-12-22 05:13:02,446 WARN L197 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 19 [2020-12-22 05:13:02,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:02,682 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2020-12-22 05:13:02,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:13:02,683 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-12-22 05:13:02,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:02,684 INFO L225 Difference]: With dead ends: 172 [2020-12-22 05:13:02,684 INFO L226 Difference]: Without dead ends: 162 [2020-12-22 05:13:02,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2020-12-22 05:13:02,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-22 05:13:02,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 130. [2020-12-22 05:13:02,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-22 05:13:02,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2020-12-22 05:13:02,704 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 37 [2020-12-22 05:13:02,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:02,704 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2020-12-22 05:13:02,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:13:02,704 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2020-12-22 05:13:02,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:13:02,705 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:02,705 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:02,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 05:13:02,920 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:02,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:02,921 INFO L82 PathProgramCache]: Analyzing trace with hash -127249911, now seen corresponding path program 4 times [2020-12-22 05:13:02,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:02,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843015234] [2020-12-22 05:13:02,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:02,932 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:02,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [15233980] [2020-12-22 05:13:02,932 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:03,004 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:13:03,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:13:03,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 05:13:03,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:03,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843015234] [2020-12-22 05:13:03,239 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:03,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15233980] [2020-12-22 05:13:03,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:03,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:13:03,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342523474] [2020-12-22 05:13:03,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:13:03,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:03,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:13:03,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:13:03,241 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 9 states. [2020-12-22 05:13:03,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:03,921 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2020-12-22 05:13:03,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:13:03,922 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-22 05:13:03,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:03,924 INFO L225 Difference]: With dead ends: 162 [2020-12-22 05:13:03,924 INFO L226 Difference]: Without dead ends: 158 [2020-12-22 05:13:03,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:13:03,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-22 05:13:03,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 142. [2020-12-22 05:13:03,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-22 05:13:03,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2020-12-22 05:13:03,946 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 37 [2020-12-22 05:13:03,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:03,946 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2020-12-22 05:13:03,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:13:03,947 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2020-12-22 05:13:03,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:13:03,947 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:03,947 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:04,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 05:13:04,157 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:04,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:04,158 INFO L82 PathProgramCache]: Analyzing trace with hash -127309493, now seen corresponding path program 5 times [2020-12-22 05:13:04,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:04,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410905247] [2020-12-22 05:13:04,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:04,168 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:04,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [344414596] [2020-12-22 05:13:04,168 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:05,197 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-22 05:13:05,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:13:05,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 05:13:05,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:05,391 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:05,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410905247] [2020-12-22 05:13:05,392 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:05,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344414596] [2020-12-22 05:13:05,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:05,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:13:05,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282515411] [2020-12-22 05:13:05,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:13:05,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:05,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:13:05,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:13:05,394 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand 7 states. [2020-12-22 05:13:05,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:05,780 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2020-12-22 05:13:05,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:13:05,781 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-12-22 05:13:05,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:05,782 INFO L225 Difference]: With dead ends: 162 [2020-12-22 05:13:05,782 INFO L226 Difference]: Without dead ends: 152 [2020-12-22 05:13:05,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:13:05,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-12-22 05:13:05,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 142. [2020-12-22 05:13:05,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-22 05:13:05,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2020-12-22 05:13:05,805 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 37 [2020-12-22 05:13:05,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:05,805 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2020-12-22 05:13:05,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:13:05,805 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2020-12-22 05:13:05,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:13:05,806 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:05,806 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:06,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 05:13:06,013 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:06,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:06,014 INFO L82 PathProgramCache]: Analyzing trace with hash 948563977, now seen corresponding path program 6 times [2020-12-22 05:13:06,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:06,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627115393] [2020-12-22 05:13:06,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:06,023 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:06,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1883945963] [2020-12-22 05:13:06,023 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:06,113 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-12-22 05:13:06,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:13:06,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-22 05:13:06,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:06,347 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:06,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627115393] [2020-12-22 05:13:06,348 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:06,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883945963] [2020-12-22 05:13:06,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:06,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:13:06,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24855802] [2020-12-22 05:13:06,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:13:06,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:06,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:13:06,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:13:06,350 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand 9 states. [2020-12-22 05:13:07,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:07,391 INFO L93 Difference]: Finished difference Result 170 states and 192 transitions. [2020-12-22 05:13:07,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:13:07,392 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-22 05:13:07,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:07,394 INFO L225 Difference]: With dead ends: 170 [2020-12-22 05:13:07,394 INFO L226 Difference]: Without dead ends: 166 [2020-12-22 05:13:07,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:13:07,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-12-22 05:13:07,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 146. [2020-12-22 05:13:07,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-22 05:13:07,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 167 transitions. [2020-12-22 05:13:07,418 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 167 transitions. Word has length 37 [2020-12-22 05:13:07,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:07,418 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 167 transitions. [2020-12-22 05:13:07,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:13:07,418 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 167 transitions. [2020-12-22 05:13:07,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:13:07,419 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:07,419 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:07,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:07,633 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:07,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:07,634 INFO L82 PathProgramCache]: Analyzing trace with hash 948504395, now seen corresponding path program 7 times [2020-12-22 05:13:07,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:07,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753675959] [2020-12-22 05:13:07,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:07,643 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:07,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221251313] [2020-12-22 05:13:07,644 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:13:07,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-22 05:13:07,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:07,994 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:07,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753675959] [2020-12-22 05:13:07,997 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:07,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221251313] [2020-12-22 05:13:07,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:07,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:13:07,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908797606] [2020-12-22 05:13:08,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:13:08,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:08,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:13:08,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:13:08,002 INFO L87 Difference]: Start difference. First operand 146 states and 167 transitions. Second operand 9 states. [2020-12-22 05:13:08,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:08,697 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2020-12-22 05:13:08,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:13:08,698 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-22 05:13:08,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:08,698 INFO L225 Difference]: With dead ends: 166 [2020-12-22 05:13:08,699 INFO L226 Difference]: Without dead ends: 156 [2020-12-22 05:13:08,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:13:08,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-12-22 05:13:08,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 138. [2020-12-22 05:13:08,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-12-22 05:13:08,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2020-12-22 05:13:08,719 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 37 [2020-12-22 05:13:08,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:08,720 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2020-12-22 05:13:08,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:13:08,720 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2020-12-22 05:13:08,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:13:08,721 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:08,721 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:08,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:08,936 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:08,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:08,937 INFO L82 PathProgramCache]: Analyzing trace with hash 690398539, now seen corresponding path program 8 times [2020-12-22 05:13:08,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:08,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481482192] [2020-12-22 05:13:08,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:08,946 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:08,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1610864888] [2020-12-22 05:13:08,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:09,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:13:09,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:13:09,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-22 05:13:09,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:09,313 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:13:09,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481482192] [2020-12-22 05:13:09,314 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:09,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610864888] [2020-12-22 05:13:09,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:13:09,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:13:09,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385198400] [2020-12-22 05:13:09,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:13:09,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:13:09,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:13:09,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:13:09,317 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 9 states. [2020-12-22 05:13:10,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:13:10,313 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2020-12-22 05:13:10,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:13:10,314 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-22 05:13:10,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:13:10,316 INFO L225 Difference]: With dead ends: 166 [2020-12-22 05:13:10,316 INFO L226 Difference]: Without dead ends: 162 [2020-12-22 05:13:10,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:13:10,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-22 05:13:10,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 142. [2020-12-22 05:13:10,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-22 05:13:10,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 163 transitions. [2020-12-22 05:13:10,338 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 163 transitions. Word has length 37 [2020-12-22 05:13:10,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:13:10,339 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 163 transitions. [2020-12-22 05:13:10,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:13:10,339 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 163 transitions. [2020-12-22 05:13:10,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 05:13:10,339 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:13:10,339 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:13:10,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-22 05:13:10,555 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:13:10,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:13:10,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1198667980, now seen corresponding path program 2 times [2020-12-22 05:13:10,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:13:10,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877310693] [2020-12-22 05:13:10,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:13:10,566 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:13:10,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393374143] [2020-12-22 05:13:10,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:13:10,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:13:10,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:13:10,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 56 conjunts are in the unsatisfiable core [2020-12-22 05:13:10,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:13:29,762 WARN L197 SmtUtils]: Spent 13.15 s on a formula simplification that was a NOOP. DAG size: 40 [2020-12-22 05:13:51,575 WARN L197 SmtUtils]: Spent 13.82 s on a formula simplification that was a NOOP. DAG size: 33 [2020-12-22 05:13:51,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877310693] [2020-12-22 05:13:51,587 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:13:51,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393374143] [2020-12-22 05:13:51,587 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-22 05:13:51,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:13:51,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:13:51,588 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:13:51,588 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:13:51,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 05:13:51,836 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:13:51,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:13:51 BoogieIcfgContainer [2020-12-22 05:13:51,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:13:51,837 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:13:51,837 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:13:51,837 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:13:51,838 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:12:40" (3/4) ... [2020-12-22 05:13:51,842 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:13:51,842 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:13:51,844 INFO L168 Benchmark]: Toolchain (without parser) took 72468.24 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 127.6 MB in the beginning and 159.3 MB in the end (delta: -31.7 MB). Peak memory consumption was 35.6 MB. Max. memory is 8.0 GB. [2020-12-22 05:13:51,845 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 152.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:13:51,845 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.22 ms. Allocated memory is still 152.0 MB. Free memory was 127.4 MB in the beginning and 117.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:13:51,846 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.17 ms. Allocated memory is still 152.0 MB. Free memory was 117.4 MB in the beginning and 115.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:13:51,846 INFO L168 Benchmark]: Boogie Preprocessor took 26.99 ms. Allocated memory is still 152.0 MB. Free memory was 115.8 MB in the beginning and 114.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:13:51,851 INFO L168 Benchmark]: RCFGBuilder took 608.78 ms. Allocated memory is still 152.0 MB. Free memory was 114.4 MB in the beginning and 131.6 MB in the end (delta: -17.1 MB). Peak memory consumption was 19.3 MB. Max. memory is 8.0 GB. [2020-12-22 05:13:51,851 INFO L168 Benchmark]: TraceAbstraction took 71411.55 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 131.6 MB in the beginning and 159.8 MB in the end (delta: -28.2 MB). Peak memory consumption was 39.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:13:51,852 INFO L168 Benchmark]: Witness Printer took 5.33 ms. Allocated memory is still 219.2 MB. Free memory was 159.8 MB in the beginning and 159.3 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:13:51,854 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 152.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 332.22 ms. Allocated memory is still 152.0 MB. Free memory was 127.4 MB in the beginning and 117.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 69.17 ms. Allocated memory is still 152.0 MB. Free memory was 117.4 MB in the beginning and 115.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.99 ms. Allocated memory is still 152.0 MB. Free memory was 115.8 MB in the beginning and 114.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 608.78 ms. Allocated memory is still 152.0 MB. Free memory was 114.4 MB in the beginning and 131.6 MB in the end (delta: -17.1 MB). Peak memory consumption was 19.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 71411.55 ms. Allocated memory was 152.0 MB in the beginning and 219.2 MB in the end (delta: 67.1 MB). Free memory was 131.6 MB in the beginning and 159.8 MB in the end (delta: -28.2 MB). Peak memory consumption was 39.4 MB. Max. memory is 8.0 GB. * Witness Printer took 5.33 ms. Allocated memory is still 219.2 MB. Free memory was 159.8 MB in the beginning and 159.3 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] long long a, b, p, q, r, s; [L20] int x, y; [L21] x = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 [L32] r = 0 [L33] s = 1 [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L40] COND FALSE !(!(a != b)) [L43] COND FALSE !(a > b) [L48] b = b - a [L49] q = q - p [L50] s = s - r [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L40] COND FALSE !(!(a != b)) [L43] COND FALSE !(a > b) [L48] b = b - a [L49] q = q - p [L50] s = s - r [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L40] COND FALSE !(!(a != b)) [L43] COND TRUE a > b [L44] a = a - b [L45] p = p - q [L46] r = r - s [L35] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 71.3s, OverallIterations: 22, TraceHistogramMax: 4, AutomataDifference: 17.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 712 SDtfs, 1785 SDslu, 2207 SDs, 0 SdLazy, 3241 SolverSat, 295 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 660 GetRequests, 417 SyntacticMatches, 1 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 14.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 21 MinimizatonAttempts, 333 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 577 NumberOfCodeBlocks, 566 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 556 ConstructedInterpolants, 0 QuantifiedInterpolants, 217645 SizeOfPredicates, 209 NumberOfNonLiveVariables, 2350 ConjunctsInSsa, 636 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 24/288 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...