/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/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:32:23,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:32:23,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:32:23,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:32:23,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:32:23,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:32:23,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:32:23,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:32:23,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:32:23,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:32:23,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:32:23,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:32:23,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:32:23,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:32:23,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:32:23,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:32:23,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:32:23,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:32:23,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:32:23,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:32:23,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:32:23,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:32:23,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:32:23,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:32:23,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:32:23,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:32:23,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:32:23,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:32:23,683 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:32:23,737 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:32:23,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:32:23,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:32:23,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:32:23,741 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:32:23,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:32:23,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:32:23,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:32:23,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:32:23,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:32:23,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:32:23,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:32:23,744 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:32:23,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:32:23,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:32:23,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:32:23,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:32:23,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:32:23,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:32:23,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:32:23,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:32:23,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:32:23,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:32:23,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:32:23,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:32:23,747 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:32:24,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:32:24,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:32:24,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:32:24,202 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:32:24,203 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:32:24,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-12-22 08:32:24,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c8c32f88/0564568cda3347c4b9adedf514dbab9f/FLAG15a4af348 [2020-12-22 08:32:25,012 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:32:25,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-12-22 08:32:25,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c8c32f88/0564568cda3347c4b9adedf514dbab9f/FLAG15a4af348 [2020-12-22 08:32:25,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c8c32f88/0564568cda3347c4b9adedf514dbab9f [2020-12-22 08:32:25,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:32:25,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:32:25,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:32:25,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:32:25,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:32:25,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:32:25" (1/1) ... [2020-12-22 08:32:25,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d4c4a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:25, skipping insertion in model container [2020-12-22 08:32:25,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:32:25" (1/1) ... [2020-12-22 08:32:25,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:32:25,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:32:25,779 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/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[9617,9630] [2020-12-22 08:32:25,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:32:25,961 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:32:26,022 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/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[9617,9630] [2020-12-22 08:32:26,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:32:26,120 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:32:26,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:26 WrapperNode [2020-12-22 08:32:26,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:32:26,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:32:26,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:32:26,125 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:32:26,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:26" (1/1) ... [2020-12-22 08:32:26,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:26" (1/1) ... [2020-12-22 08:32:26,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:32:26,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:32:26,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:32:26,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:32:26,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:26" (1/1) ... [2020-12-22 08:32:26,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:26" (1/1) ... [2020-12-22 08:32:26,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:26" (1/1) ... [2020-12-22 08:32:26,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:26" (1/1) ... [2020-12-22 08:32:26,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:26" (1/1) ... [2020-12-22 08:32:26,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:26" (1/1) ... [2020-12-22 08:32:26,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:26" (1/1) ... [2020-12-22 08:32:26,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:32:26,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:32:26,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:32:26,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:32:26,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:26" (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 08:32:26,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:32:26,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:32:26,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:32:26,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:32:27,744 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:32:27,745 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:32:27,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:32:27 BoogieIcfgContainer [2020-12-22 08:32:27,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:32:27,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:32:27,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:32:27,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:32:27,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:32:25" (1/3) ... [2020-12-22 08:32:27,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bfc1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:32:27, skipping insertion in model container [2020-12-22 08:32:27,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:32:26" (2/3) ... [2020-12-22 08:32:27,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bfc1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:32:27, skipping insertion in model container [2020-12-22 08:32:27,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:32:27" (3/3) ... [2020-12-22 08:32:27,762 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-12-22 08:32:27,770 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:32:27,776 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:32:27,796 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:32:27,828 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:32:27,828 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:32:27,828 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:32:27,828 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:32:27,828 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:32:27,829 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:32:27,829 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:32:27,829 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:32:27,851 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states. [2020-12-22 08:32:27,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 08:32:27,863 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:27,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:27,864 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:27,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:27,871 INFO L82 PathProgramCache]: Analyzing trace with hash 891906329, now seen corresponding path program 1 times [2020-12-22 08:32:27,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:27,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759485525] [2020-12-22 08:32:27,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:28,401 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 08:32:28,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759485525] [2020-12-22 08:32:28,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:28,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:32:28,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531721004] [2020-12-22 08:32:28,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:32:28,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:28,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:32:28,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:28,427 INFO L87 Difference]: Start difference. First operand 259 states. Second operand 3 states. [2020-12-22 08:32:28,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:28,582 INFO L93 Difference]: Finished difference Result 522 states and 864 transitions. [2020-12-22 08:32:28,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:32:28,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 08:32:28,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:28,624 INFO L225 Difference]: With dead ends: 522 [2020-12-22 08:32:28,624 INFO L226 Difference]: Without dead ends: 396 [2020-12-22 08:32:28,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:28,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-12-22 08:32:28,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 394. [2020-12-22 08:32:28,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-12-22 08:32:28,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 590 transitions. [2020-12-22 08:32:28,728 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 590 transitions. Word has length 97 [2020-12-22 08:32:28,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:28,729 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 590 transitions. [2020-12-22 08:32:28,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:32:28,729 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 590 transitions. [2020-12-22 08:32:28,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:32:28,733 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:28,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:28,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:32:28,734 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:28,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:28,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1536603989, now seen corresponding path program 1 times [2020-12-22 08:32:28,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:28,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880201908] [2020-12-22 08:32:28,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:29,290 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 08:32:29,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880201908] [2020-12-22 08:32:29,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:29,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:32:29,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966837607] [2020-12-22 08:32:29,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:32:29,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:29,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:32:29,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:32:29,296 INFO L87 Difference]: Start difference. First operand 394 states and 590 transitions. Second operand 8 states. [2020-12-22 08:32:29,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:29,866 INFO L93 Difference]: Finished difference Result 1959 states and 3036 transitions. [2020-12-22 08:32:29,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:32:29,867 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-12-22 08:32:29,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:29,878 INFO L225 Difference]: With dead ends: 1959 [2020-12-22 08:32:29,878 INFO L226 Difference]: Without dead ends: 1665 [2020-12-22 08:32:29,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:32:29,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2020-12-22 08:32:30,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1655. [2020-12-22 08:32:30,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1655 states. [2020-12-22 08:32:30,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2558 transitions. [2020-12-22 08:32:30,039 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2558 transitions. Word has length 98 [2020-12-22 08:32:30,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:30,040 INFO L481 AbstractCegarLoop]: Abstraction has 1655 states and 2558 transitions. [2020-12-22 08:32:30,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:32:30,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2558 transitions. [2020-12-22 08:32:30,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 08:32:30,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:30,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:30,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:32:30,051 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:30,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:30,055 INFO L82 PathProgramCache]: Analyzing trace with hash 520748387, now seen corresponding path program 1 times [2020-12-22 08:32:30,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:30,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972410835] [2020-12-22 08:32:30,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:30,280 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 08:32:30,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972410835] [2020-12-22 08:32:30,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:30,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:32:30,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919511346] [2020-12-22 08:32:30,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:32:30,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:30,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:32:30,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:32:30,289 INFO L87 Difference]: Start difference. First operand 1655 states and 2558 transitions. Second operand 5 states. [2020-12-22 08:32:30,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:30,900 INFO L93 Difference]: Finished difference Result 4377 states and 6838 transitions. [2020-12-22 08:32:30,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:32:30,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-12-22 08:32:30,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:30,917 INFO L225 Difference]: With dead ends: 4377 [2020-12-22 08:32:30,918 INFO L226 Difference]: Without dead ends: 2843 [2020-12-22 08:32:30,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:32:30,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2020-12-22 08:32:31,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 2841. [2020-12-22 08:32:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2841 states. [2020-12-22 08:32:31,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 4413 transitions. [2020-12-22 08:32:31,160 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 4413 transitions. Word has length 99 [2020-12-22 08:32:31,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:31,161 INFO L481 AbstractCegarLoop]: Abstraction has 2841 states and 4413 transitions. [2020-12-22 08:32:31,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:32:31,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 4413 transitions. [2020-12-22 08:32:31,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 08:32:31,164 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:31,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:31,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:32:31,165 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:31,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:31,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1043155442, now seen corresponding path program 1 times [2020-12-22 08:32:31,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:31,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916914664] [2020-12-22 08:32:31,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:31,296 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 08:32:31,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916914664] [2020-12-22 08:32:31,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:31,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:32:31,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475703290] [2020-12-22 08:32:31,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:32:31,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:31,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:32:31,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:32:31,299 INFO L87 Difference]: Start difference. First operand 2841 states and 4413 transitions. Second operand 5 states. [2020-12-22 08:32:32,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:32,007 INFO L93 Difference]: Finished difference Result 7800 states and 12206 transitions. [2020-12-22 08:32:32,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:32:32,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-12-22 08:32:32,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:32,034 INFO L225 Difference]: With dead ends: 7800 [2020-12-22 08:32:32,034 INFO L226 Difference]: Without dead ends: 5117 [2020-12-22 08:32:32,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:32:32,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5117 states. [2020-12-22 08:32:32,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5117 to 5115. [2020-12-22 08:32:32,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5115 states. [2020-12-22 08:32:32,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 7961 transitions. [2020-12-22 08:32:32,407 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 7961 transitions. Word has length 99 [2020-12-22 08:32:32,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:32,408 INFO L481 AbstractCegarLoop]: Abstraction has 5115 states and 7961 transitions. [2020-12-22 08:32:32,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:32:32,409 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 7961 transitions. [2020-12-22 08:32:32,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 08:32:32,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:32,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:32,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:32:32,413 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:32,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:32,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1397069631, now seen corresponding path program 1 times [2020-12-22 08:32:32,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:32,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209977447] [2020-12-22 08:32:32,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:32,577 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 08:32:32,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209977447] [2020-12-22 08:32:32,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:32,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:32:32,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635057909] [2020-12-22 08:32:32,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:32:32,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:32,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:32:32,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:32:32,581 INFO L87 Difference]: Start difference. First operand 5115 states and 7961 transitions. Second operand 5 states. [2020-12-22 08:32:33,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:33,650 INFO L93 Difference]: Finished difference Result 14545 states and 22769 transitions. [2020-12-22 08:32:33,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:32:33,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-12-22 08:32:33,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:33,701 INFO L225 Difference]: With dead ends: 14545 [2020-12-22 08:32:33,701 INFO L226 Difference]: Without dead ends: 9629 [2020-12-22 08:32:33,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:32:33,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9629 states. [2020-12-22 08:32:34,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9629 to 9627. [2020-12-22 08:32:34,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9627 states. [2020-12-22 08:32:34,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9627 states to 9627 states and 15007 transitions. [2020-12-22 08:32:34,536 INFO L78 Accepts]: Start accepts. Automaton has 9627 states and 15007 transitions. Word has length 99 [2020-12-22 08:32:34,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:34,537 INFO L481 AbstractCegarLoop]: Abstraction has 9627 states and 15007 transitions. [2020-12-22 08:32:34,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:32:34,537 INFO L276 IsEmpty]: Start isEmpty. Operand 9627 states and 15007 transitions. [2020-12-22 08:32:34,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 08:32:34,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:34,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:34,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:32:34,542 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:34,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:34,543 INFO L82 PathProgramCache]: Analyzing trace with hash 2146829076, now seen corresponding path program 1 times [2020-12-22 08:32:34,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:34,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207893313] [2020-12-22 08:32:34,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:34,661 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 08:32:34,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207893313] [2020-12-22 08:32:34,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:34,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:32:34,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323259119] [2020-12-22 08:32:34,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:32:34,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:34,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:32:34,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:32:34,664 INFO L87 Difference]: Start difference. First operand 9627 states and 15007 transitions. Second operand 6 states. [2020-12-22 08:32:37,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:37,023 INFO L93 Difference]: Finished difference Result 36999 states and 57780 transitions. [2020-12-22 08:32:37,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:32:37,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-12-22 08:32:37,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:37,144 INFO L225 Difference]: With dead ends: 36999 [2020-12-22 08:32:37,145 INFO L226 Difference]: Without dead ends: 27463 [2020-12-22 08:32:37,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:32:37,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27463 states. [2020-12-22 08:32:39,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27463 to 27459. [2020-12-22 08:32:39,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27459 states. [2020-12-22 08:32:39,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27459 states to 27459 states and 42735 transitions. [2020-12-22 08:32:39,238 INFO L78 Accepts]: Start accepts. Automaton has 27459 states and 42735 transitions. Word has length 99 [2020-12-22 08:32:39,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:39,238 INFO L481 AbstractCegarLoop]: Abstraction has 27459 states and 42735 transitions. [2020-12-22 08:32:39,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:32:39,239 INFO L276 IsEmpty]: Start isEmpty. Operand 27459 states and 42735 transitions. [2020-12-22 08:32:39,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 08:32:39,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:39,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:39,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:32:39,247 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:39,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:39,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1517888763, now seen corresponding path program 1 times [2020-12-22 08:32:39,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:39,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44473370] [2020-12-22 08:32:39,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:39,368 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 08:32:39,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44473370] [2020-12-22 08:32:39,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:39,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:32:39,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158950048] [2020-12-22 08:32:39,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:32:39,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:39,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:32:39,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:32:39,371 INFO L87 Difference]: Start difference. First operand 27459 states and 42735 transitions. Second operand 6 states. [2020-12-22 08:32:43,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:43,605 INFO L93 Difference]: Finished difference Result 107278 states and 166889 transitions. [2020-12-22 08:32:43,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:32:43,606 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-12-22 08:32:43,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:43,850 INFO L225 Difference]: With dead ends: 107278 [2020-12-22 08:32:43,850 INFO L226 Difference]: Without dead ends: 79887 [2020-12-22 08:32:43,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:32:43,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79887 states. [2020-12-22 08:32:48,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79887 to 79883. [2020-12-22 08:32:48,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79883 states. [2020-12-22 08:32:48,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79883 states to 79883 states and 123748 transitions. [2020-12-22 08:32:48,702 INFO L78 Accepts]: Start accepts. Automaton has 79883 states and 123748 transitions. Word has length 99 [2020-12-22 08:32:48,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:48,702 INFO L481 AbstractCegarLoop]: Abstraction has 79883 states and 123748 transitions. [2020-12-22 08:32:48,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:32:48,702 INFO L276 IsEmpty]: Start isEmpty. Operand 79883 states and 123748 transitions. [2020-12-22 08:32:48,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 08:32:48,718 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:48,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:32:48,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:32:48,718 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:48,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:48,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1740503754, now seen corresponding path program 1 times [2020-12-22 08:32:48,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:48,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587340235] [2020-12-22 08:32:48,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:49,026 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 08:32:49,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587340235] [2020-12-22 08:32:49,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:49,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:32:49,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483760095] [2020-12-22 08:32:49,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:32:49,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:49,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:32:49,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:32:49,029 INFO L87 Difference]: Start difference. First operand 79883 states and 123748 transitions. Second operand 6 states. [2020-12-22 08:32:59,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:59,574 INFO L93 Difference]: Finished difference Result 302102 states and 467324 transitions. [2020-12-22 08:32:59,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:32:59,575 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-12-22 08:32:59,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:00,287 INFO L225 Difference]: With dead ends: 302102 [2020-12-22 08:33:00,288 INFO L226 Difference]: Without dead ends: 222271 [2020-12-22 08:33:00,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:33:00,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222271 states. [2020-12-22 08:33:12,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222271 to 222267. [2020-12-22 08:33:12,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222267 states. [2020-12-22 08:33:12,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222267 states to 222267 states and 342044 transitions. [2020-12-22 08:33:12,856 INFO L78 Accepts]: Start accepts. Automaton has 222267 states and 342044 transitions. Word has length 99 [2020-12-22 08:33:12,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:12,856 INFO L481 AbstractCegarLoop]: Abstraction has 222267 states and 342044 transitions. [2020-12-22 08:33:12,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:33:12,856 INFO L276 IsEmpty]: Start isEmpty. Operand 222267 states and 342044 transitions. [2020-12-22 08:33:12,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 08:33:12,894 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:12,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:12,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:33:12,894 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:12,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:12,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1377652457, now seen corresponding path program 1 times [2020-12-22 08:33:12,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:12,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957501507] [2020-12-22 08:33:12,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:13,012 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 08:33:13,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957501507] [2020-12-22 08:33:13,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:13,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:33:13,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031946506] [2020-12-22 08:33:13,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:33:13,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:13,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:33:13,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:33:13,015 INFO L87 Difference]: Start difference. First operand 222267 states and 342044 transitions. Second operand 5 states. [2020-12-22 08:33:32,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:32,371 INFO L93 Difference]: Finished difference Result 423773 states and 649485 transitions. [2020-12-22 08:33:32,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:33:32,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-12-22 08:33:32,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:33,636 INFO L225 Difference]: With dead ends: 423773 [2020-12-22 08:33:33,637 INFO L226 Difference]: Without dead ends: 423771 [2020-12-22 08:33:33,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:33:34,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423771 states. [2020-12-22 08:33:48,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423771 to 224715. [2020-12-22 08:33:48,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224715 states. [2020-12-22 08:33:49,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224715 states to 224715 states and 344492 transitions. [2020-12-22 08:33:49,158 INFO L78 Accepts]: Start accepts. Automaton has 224715 states and 344492 transitions. Word has length 100 [2020-12-22 08:33:49,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:49,158 INFO L481 AbstractCegarLoop]: Abstraction has 224715 states and 344492 transitions. [2020-12-22 08:33:49,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:33:49,158 INFO L276 IsEmpty]: Start isEmpty. Operand 224715 states and 344492 transitions. [2020-12-22 08:33:49,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 08:33:49,194 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:49,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:33:49,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:33:49,195 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:49,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:49,196 INFO L82 PathProgramCache]: Analyzing trace with hash 101785651, now seen corresponding path program 1 times [2020-12-22 08:33:49,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:49,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807038254] [2020-12-22 08:33:49,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:49,500 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 08:33:49,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807038254] [2020-12-22 08:33:49,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:49,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:33:49,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466573947] [2020-12-22 08:33:49,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:33:49,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:49,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:33:49,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:33:49,503 INFO L87 Difference]: Start difference. First operand 224715 states and 344492 transitions. Second operand 10 states. [2020-12-22 08:33:50,653 WARN L197 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2020-12-22 08:34:40,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:40,756 INFO L93 Difference]: Finished difference Result 866814 states and 1318695 transitions. [2020-12-22 08:34:40,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 08:34:40,757 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 101 [2020-12-22 08:34:40,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:42,360 INFO L225 Difference]: With dead ends: 866814 [2020-12-22 08:34:42,360 INFO L226 Difference]: Without dead ends: 760502 [2020-12-22 08:34:42,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=219, Invalid=593, Unknown=0, NotChecked=0, Total=812 [2020-12-22 08:34:43,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760502 states. [2020-12-22 08:35:08,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760502 to 226426. [2020-12-22 08:35:08,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226426 states. [2020-12-22 08:35:09,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226426 states to 226426 states and 346845 transitions. [2020-12-22 08:35:09,644 INFO L78 Accepts]: Start accepts. Automaton has 226426 states and 346845 transitions. Word has length 101 [2020-12-22 08:35:09,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:09,644 INFO L481 AbstractCegarLoop]: Abstraction has 226426 states and 346845 transitions. [2020-12-22 08:35:09,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:35:09,645 INFO L276 IsEmpty]: Start isEmpty. Operand 226426 states and 346845 transitions. [2020-12-22 08:35:09,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 08:35:09,681 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:09,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:35:09,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:35:09,682 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:09,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:09,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1744765011, now seen corresponding path program 1 times [2020-12-22 08:35:09,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:09,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379012983] [2020-12-22 08:35:09,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:10,071 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 08:35:10,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379012983] [2020-12-22 08:35:10,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:10,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:35:10,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758847043] [2020-12-22 08:35:10,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:35:10,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:10,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:35:10,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:35:10,075 INFO L87 Difference]: Start difference. First operand 226426 states and 346845 transitions. Second operand 10 states.