/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_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:10:35,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:10:35,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:10:36,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:10:36,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:10:36,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:10:36,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:10:36,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:10:36,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:10:36,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:10:36,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:10:36,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:10:36,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:10:36,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:10:36,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:10:36,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:10:36,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:10:36,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:10:36,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:10:36,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:10:36,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:10:36,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:10:36,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:10:36,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:10:36,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:10:36,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:10:36,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:10:36,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:10:36,131 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:10:36,186 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:10:36,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:10:36,191 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:10:36,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:10:36,191 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:10:36,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:10:36,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:10:36,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:10:36,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:10:36,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:10:36,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:10:36,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:10:36,194 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:10:36,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:10:36,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:10:36,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:10:36,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:10:36,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:10:36,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:10:36,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:10:36,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:10:36,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:10:36,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:10:36,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:10:36,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:10:36,197 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:10:36,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:10:36,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:10:36,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:10:36,599 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:10:36,600 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:10:36,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-12-22 09:10:36,680 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30bcf94bd/9bd7709c811740c8be1e208fb81e602a/FLAGec7556122 [2020-12-22 09:10:37,581 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:10:37,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-12-22 09:10:37,612 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30bcf94bd/9bd7709c811740c8be1e208fb81e602a/FLAGec7556122 [2020-12-22 09:10:37,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30bcf94bd/9bd7709c811740c8be1e208fb81e602a [2020-12-22 09:10:37,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:10:37,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:10:37,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:10:37,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:10:37,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:10:37,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:10:37" (1/1) ... [2020-12-22 09:10:37,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f908e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:37, skipping insertion in model container [2020-12-22 09:10:37,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:10:37" (1/1) ... [2020-12-22 09:10:37,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:10:37,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:10:38,429 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_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[22269,22282] [2020-12-22 09:10:38,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:10:38,686 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:10:38,795 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_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[22269,22282] [2020-12-22 09:10:38,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:10:38,916 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:10:38,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:38 WrapperNode [2020-12-22 09:10:38,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:10:38,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:10:38,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:10:38,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:10:38,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:38" (1/1) ... [2020-12-22 09:10:38,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:38" (1/1) ... [2020-12-22 09:10:39,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:10:39,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:10:39,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:10:39,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:10:39,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:38" (1/1) ... [2020-12-22 09:10:39,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:38" (1/1) ... [2020-12-22 09:10:39,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:38" (1/1) ... [2020-12-22 09:10:39,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:38" (1/1) ... [2020-12-22 09:10:39,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:38" (1/1) ... [2020-12-22 09:10:39,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:38" (1/1) ... [2020-12-22 09:10:39,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:38" (1/1) ... [2020-12-22 09:10:39,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:10:39,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:10:39,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:10:39,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:10:39,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:38" (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 09:10:39,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:10:39,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:10:39,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:10:39,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:10:41,623 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:10:41,623 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:10:41,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:10:41 BoogieIcfgContainer [2020-12-22 09:10:41,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:10:41,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:10:41,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:10:41,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:10:41,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:10:37" (1/3) ... [2020-12-22 09:10:41,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d02c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:10:41, skipping insertion in model container [2020-12-22 09:10:41,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:10:38" (2/3) ... [2020-12-22 09:10:41,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d02c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:10:41, skipping insertion in model container [2020-12-22 09:10:41,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:10:41" (3/3) ... [2020-12-22 09:10:41,636 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-12-22 09:10:41,643 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:10:41,649 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 09:10:41,668 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 09:10:41,701 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:10:41,701 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:10:41,701 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:10:41,701 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:10:41,702 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:10:41,702 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:10:41,702 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:10:41,702 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:10:41,733 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states. [2020-12-22 09:10:41,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-12-22 09:10:41,760 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:41,761 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:41,761 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:41,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:41,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1759621140, now seen corresponding path program 1 times [2020-12-22 09:10:41,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:41,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418498919] [2020-12-22 09:10:41,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:42,704 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 09:10:42,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418498919] [2020-12-22 09:10:42,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:42,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:42,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492135421] [2020-12-22 09:10:42,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:42,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:42,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:42,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:42,738 INFO L87 Difference]: Start difference. First operand 750 states. Second operand 3 states. [2020-12-22 09:10:42,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:42,947 INFO L93 Difference]: Finished difference Result 1180 states and 2099 transitions. [2020-12-22 09:10:42,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:10:42,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2020-12-22 09:10:42,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:42,978 INFO L225 Difference]: With dead ends: 1180 [2020-12-22 09:10:42,978 INFO L226 Difference]: Without dead ends: 952 [2020-12-22 09:10:42,983 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 09:10:43,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2020-12-22 09:10:43,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 950. [2020-12-22 09:10:43,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-12-22 09:10:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1662 transitions. [2020-12-22 09:10:43,123 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1662 transitions. Word has length 193 [2020-12-22 09:10:43,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:43,126 INFO L481 AbstractCegarLoop]: Abstraction has 950 states and 1662 transitions. [2020-12-22 09:10:43,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:43,127 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1662 transitions. [2020-12-22 09:10:43,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-12-22 09:10:43,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:43,140 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:43,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:10:43,143 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:43,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:43,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1458857433, now seen corresponding path program 1 times [2020-12-22 09:10:43,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:43,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449936419] [2020-12-22 09:10:43,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:43,476 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 09:10:43,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449936419] [2020-12-22 09:10:43,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:43,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:43,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276308475] [2020-12-22 09:10:43,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:43,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:43,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:43,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:43,481 INFO L87 Difference]: Start difference. First operand 950 states and 1662 transitions. Second operand 3 states. [2020-12-22 09:10:43,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:43,552 INFO L93 Difference]: Finished difference Result 1770 states and 3046 transitions. [2020-12-22 09:10:43,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:10:43,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2020-12-22 09:10:43,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:43,563 INFO L225 Difference]: With dead ends: 1770 [2020-12-22 09:10:43,563 INFO L226 Difference]: Without dead ends: 1348 [2020-12-22 09:10:43,567 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 09:10:43,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2020-12-22 09:10:43,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1346. [2020-12-22 09:10:43,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1346 states. [2020-12-22 09:10:43,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 2329 transitions. [2020-12-22 09:10:43,651 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 2329 transitions. Word has length 197 [2020-12-22 09:10:43,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:43,653 INFO L481 AbstractCegarLoop]: Abstraction has 1346 states and 2329 transitions. [2020-12-22 09:10:43,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:43,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 2329 transitions. [2020-12-22 09:10:43,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-12-22 09:10:43,658 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:43,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:43,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:10:43,660 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:43,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:43,664 INFO L82 PathProgramCache]: Analyzing trace with hash -308666722, now seen corresponding path program 1 times [2020-12-22 09:10:43,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:43,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749586550] [2020-12-22 09:10:43,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:43,998 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 09:10:43,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749586550] [2020-12-22 09:10:43,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:44,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:44,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241079425] [2020-12-22 09:10:44,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:44,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:44,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:44,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:44,018 INFO L87 Difference]: Start difference. First operand 1346 states and 2329 transitions. Second operand 3 states. [2020-12-22 09:10:44,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:44,133 INFO L93 Difference]: Finished difference Result 2934 states and 5003 transitions. [2020-12-22 09:10:44,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:10:44,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2020-12-22 09:10:44,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:44,156 INFO L225 Difference]: With dead ends: 2934 [2020-12-22 09:10:44,157 INFO L226 Difference]: Without dead ends: 2116 [2020-12-22 09:10:44,160 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 09:10:44,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2020-12-22 09:10:44,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 2114. [2020-12-22 09:10:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2020-12-22 09:10:44,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3617 transitions. [2020-12-22 09:10:44,297 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3617 transitions. Word has length 201 [2020-12-22 09:10:44,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:44,307 INFO L481 AbstractCegarLoop]: Abstraction has 2114 states and 3617 transitions. [2020-12-22 09:10:44,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:44,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3617 transitions. [2020-12-22 09:10:44,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-12-22 09:10:44,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:44,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:44,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:10:44,318 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:44,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:44,320 INFO L82 PathProgramCache]: Analyzing trace with hash 422688099, now seen corresponding path program 1 times [2020-12-22 09:10:44,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:44,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886132575] [2020-12-22 09:10:44,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:44,611 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 09:10:44,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886132575] [2020-12-22 09:10:44,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:44,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:44,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048029445] [2020-12-22 09:10:44,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:44,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:44,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:44,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:44,616 INFO L87 Difference]: Start difference. First operand 2114 states and 3617 transitions. Second operand 3 states. [2020-12-22 09:10:44,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:44,756 INFO L93 Difference]: Finished difference Result 5190 states and 8779 transitions. [2020-12-22 09:10:44,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:10:44,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2020-12-22 09:10:44,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:44,780 INFO L225 Difference]: With dead ends: 5190 [2020-12-22 09:10:44,781 INFO L226 Difference]: Without dead ends: 3604 [2020-12-22 09:10:44,785 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 09:10:44,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3604 states. [2020-12-22 09:10:44,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3604 to 3602. [2020-12-22 09:10:44,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3602 states. [2020-12-22 09:10:44,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3602 states to 3602 states and 6101 transitions. [2020-12-22 09:10:44,951 INFO L78 Accepts]: Start accepts. Automaton has 3602 states and 6101 transitions. Word has length 205 [2020-12-22 09:10:44,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:44,952 INFO L481 AbstractCegarLoop]: Abstraction has 3602 states and 6101 transitions. [2020-12-22 09:10:44,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:44,952 INFO L276 IsEmpty]: Start isEmpty. Operand 3602 states and 6101 transitions. [2020-12-22 09:10:44,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-12-22 09:10:44,958 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:44,958 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:44,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:10:44,959 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:44,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:44,959 INFO L82 PathProgramCache]: Analyzing trace with hash 245335336, now seen corresponding path program 1 times [2020-12-22 09:10:44,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:44,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911389858] [2020-12-22 09:10:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:45,176 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 09:10:45,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911389858] [2020-12-22 09:10:45,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:45,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:45,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484323477] [2020-12-22 09:10:45,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:45,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:45,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:45,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:45,181 INFO L87 Difference]: Start difference. First operand 3602 states and 6101 transitions. Second operand 3 states. [2020-12-22 09:10:45,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:45,441 INFO L93 Difference]: Finished difference Result 9558 states and 16055 transitions. [2020-12-22 09:10:45,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:10:45,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2020-12-22 09:10:45,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:45,484 INFO L225 Difference]: With dead ends: 9558 [2020-12-22 09:10:45,484 INFO L226 Difference]: Without dead ends: 6484 [2020-12-22 09:10:45,494 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 09:10:45,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6484 states. [2020-12-22 09:10:45,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6484 to 6482. [2020-12-22 09:10:45,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6482 states. [2020-12-22 09:10:45,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6482 states to 6482 states and 10885 transitions. [2020-12-22 09:10:45,884 INFO L78 Accepts]: Start accepts. Automaton has 6482 states and 10885 transitions. Word has length 209 [2020-12-22 09:10:45,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:45,885 INFO L481 AbstractCegarLoop]: Abstraction has 6482 states and 10885 transitions. [2020-12-22 09:10:45,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:45,885 INFO L276 IsEmpty]: Start isEmpty. Operand 6482 states and 10885 transitions. [2020-12-22 09:10:45,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-12-22 09:10:45,892 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:45,893 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:45,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:10:45,893 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:45,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:45,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1489856749, now seen corresponding path program 1 times [2020-12-22 09:10:45,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:45,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909263458] [2020-12-22 09:10:45,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:46,220 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 09:10:46,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909263458] [2020-12-22 09:10:46,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:46,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:10:46,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676974509] [2020-12-22 09:10:46,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:10:46,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:46,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:10:46,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:10:46,222 INFO L87 Difference]: Start difference. First operand 6482 states and 10885 transitions. Second operand 7 states. [2020-12-22 09:10:48,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:48,447 INFO L93 Difference]: Finished difference Result 39689 states and 66589 transitions. [2020-12-22 09:10:48,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 09:10:48,448 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-12-22 09:10:48,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:48,585 INFO L225 Difference]: With dead ends: 39689 [2020-12-22 09:10:48,585 INFO L226 Difference]: Without dead ends: 33735 [2020-12-22 09:10:48,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 09:10:48,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33735 states. [2020-12-22 09:10:50,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33735 to 12279. [2020-12-22 09:10:50,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12279 states. [2020-12-22 09:10:50,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12279 states to 12279 states and 20524 transitions. [2020-12-22 09:10:50,070 INFO L78 Accepts]: Start accepts. Automaton has 12279 states and 20524 transitions. Word has length 213 [2020-12-22 09:10:50,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:50,070 INFO L481 AbstractCegarLoop]: Abstraction has 12279 states and 20524 transitions. [2020-12-22 09:10:50,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:10:50,070 INFO L276 IsEmpty]: Start isEmpty. Operand 12279 states and 20524 transitions. [2020-12-22 09:10:50,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-12-22 09:10:50,084 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:50,084 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:50,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:10:50,085 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:50,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:50,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1130700822, now seen corresponding path program 1 times [2020-12-22 09:10:50,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:50,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543684151] [2020-12-22 09:10:50,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:50,308 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 09:10:50,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543684151] [2020-12-22 09:10:50,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:50,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:10:50,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357726855] [2020-12-22 09:10:50,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:10:50,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:50,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:10:50,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:10:50,312 INFO L87 Difference]: Start difference. First operand 12279 states and 20524 transitions. Second operand 4 states. [2020-12-22 09:10:51,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:51,757 INFO L93 Difference]: Finished difference Result 32960 states and 55158 transitions. [2020-12-22 09:10:51,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:10:51,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 214 [2020-12-22 09:10:51,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:51,811 INFO L225 Difference]: With dead ends: 32960 [2020-12-22 09:10:51,811 INFO L226 Difference]: Without dead ends: 21209 [2020-12-22 09:10:51,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 09:10:51,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21209 states. [2020-12-22 09:10:53,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21209 to 18255. [2020-12-22 09:10:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18255 states. [2020-12-22 09:10:53,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18255 states to 18255 states and 30520 transitions. [2020-12-22 09:10:53,180 INFO L78 Accepts]: Start accepts. Automaton has 18255 states and 30520 transitions. Word has length 214 [2020-12-22 09:10:53,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:53,180 INFO L481 AbstractCegarLoop]: Abstraction has 18255 states and 30520 transitions. [2020-12-22 09:10:53,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:10:53,181 INFO L276 IsEmpty]: Start isEmpty. Operand 18255 states and 30520 transitions. [2020-12-22 09:10:53,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-12-22 09:10:53,196 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:53,196 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:53,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:10:53,197 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:53,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:53,197 INFO L82 PathProgramCache]: Analyzing trace with hash 534456548, now seen corresponding path program 1 times [2020-12-22 09:10:53,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:53,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585256200] [2020-12-22 09:10:53,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:53,423 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 09:10:53,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585256200] [2020-12-22 09:10:53,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:53,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:53,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922786000] [2020-12-22 09:10:53,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:53,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:53,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:53,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:53,428 INFO L87 Difference]: Start difference. First operand 18255 states and 30520 transitions. Second operand 3 states. [2020-12-22 09:10:55,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:55,068 INFO L93 Difference]: Finished difference Result 35283 states and 58971 transitions. [2020-12-22 09:10:55,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:10:55,069 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2020-12-22 09:10:55,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:55,126 INFO L225 Difference]: With dead ends: 35283 [2020-12-22 09:10:55,126 INFO L226 Difference]: Without dead ends: 25969 [2020-12-22 09:10:55,142 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 09:10:55,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25969 states. [2020-12-22 09:10:56,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25969 to 25967. [2020-12-22 09:10:56,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25967 states. [2020-12-22 09:10:56,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25967 states to 25967 states and 43311 transitions. [2020-12-22 09:10:56,736 INFO L78 Accepts]: Start accepts. Automaton has 25967 states and 43311 transitions. Word has length 215 [2020-12-22 09:10:56,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:56,736 INFO L481 AbstractCegarLoop]: Abstraction has 25967 states and 43311 transitions. [2020-12-22 09:10:56,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:56,737 INFO L276 IsEmpty]: Start isEmpty. Operand 25967 states and 43311 transitions. [2020-12-22 09:10:56,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-12-22 09:10:56,745 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:56,745 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:56,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:10:56,746 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:56,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:56,746 INFO L82 PathProgramCache]: Analyzing trace with hash -759048876, now seen corresponding path program 1 times [2020-12-22 09:10:56,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:56,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043109184] [2020-12-22 09:10:56,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:57,021 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 09:10:57,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043109184] [2020-12-22 09:10:57,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:57,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:10:57,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350302192] [2020-12-22 09:10:57,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:10:57,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:57,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:10:57,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:10:57,031 INFO L87 Difference]: Start difference. First operand 25967 states and 43311 transitions. Second operand 4 states. [2020-12-22 09:10:59,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:59,424 INFO L93 Difference]: Finished difference Result 70307 states and 117358 transitions. [2020-12-22 09:10:59,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:10:59,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2020-12-22 09:10:59,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:59,527 INFO L225 Difference]: With dead ends: 70307 [2020-12-22 09:10:59,527 INFO L226 Difference]: Without dead ends: 45092 [2020-12-22 09:10:59,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 09:10:59,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45092 states. [2020-12-22 09:11:01,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45092 to 38762. [2020-12-22 09:11:01,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38762 states. [2020-12-22 09:11:01,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38762 states to 38762 states and 64564 transitions. [2020-12-22 09:11:01,993 INFO L78 Accepts]: Start accepts. Automaton has 38762 states and 64564 transitions. Word has length 215 [2020-12-22 09:11:01,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:01,993 INFO L481 AbstractCegarLoop]: Abstraction has 38762 states and 64564 transitions. [2020-12-22 09:11:01,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:11:01,994 INFO L276 IsEmpty]: Start isEmpty. Operand 38762 states and 64564 transitions. [2020-12-22 09:11:02,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-12-22 09:11:02,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:02,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:11:02,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:11:02,007 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:02,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:02,008 INFO L82 PathProgramCache]: Analyzing trace with hash -296680176, now seen corresponding path program 1 times [2020-12-22 09:11:02,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:02,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869797153] [2020-12-22 09:11:02,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:02,221 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 09:11:02,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869797153] [2020-12-22 09:11:02,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:02,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:11:02,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880811555] [2020-12-22 09:11:02,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:11:02,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:02,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:11:02,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:02,225 INFO L87 Difference]: Start difference. First operand 38762 states and 64564 transitions. Second operand 3 states. [2020-12-22 09:11:04,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:04,805 INFO L93 Difference]: Finished difference Result 75614 states and 125988 transitions. [2020-12-22 09:11:04,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:11:04,806 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2020-12-22 09:11:04,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:04,933 INFO L225 Difference]: With dead ends: 75614 [2020-12-22 09:11:04,933 INFO L226 Difference]: Without dead ends: 55632 [2020-12-22 09:11:04,974 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 09:11:05,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55632 states. [2020-12-22 09:11:07,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55632 to 55630. [2020-12-22 09:11:07,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55630 states. [2020-12-22 09:11:07,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55630 states to 55630 states and 92438 transitions. [2020-12-22 09:11:07,985 INFO L78 Accepts]: Start accepts. Automaton has 55630 states and 92438 transitions. Word has length 215 [2020-12-22 09:11:07,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:07,986 INFO L481 AbstractCegarLoop]: Abstraction has 55630 states and 92438 transitions. [2020-12-22 09:11:07,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:11:07,986 INFO L276 IsEmpty]: Start isEmpty. Operand 55630 states and 92438 transitions. [2020-12-22 09:11:07,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-12-22 09:11:07,994 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:07,994 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:11:07,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:11:07,994 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:07,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:07,995 INFO L82 PathProgramCache]: Analyzing trace with hash -920100294, now seen corresponding path program 1 times [2020-12-22 09:11:07,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:07,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579021035] [2020-12-22 09:11:07,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:08,149 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 09:11:08,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579021035] [2020-12-22 09:11:08,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:08,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:11:08,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873098782] [2020-12-22 09:11:08,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:11:08,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:08,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:11:08,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:08,152 INFO L87 Difference]: Start difference. First operand 55630 states and 92438 transitions. Second operand 3 states. [2020-12-22 09:11:11,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:11,959 INFO L93 Difference]: Finished difference Result 105962 states and 176248 transitions. [2020-12-22 09:11:11,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:11:11,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2020-12-22 09:11:11,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:12,091 INFO L225 Difference]: With dead ends: 105962 [2020-12-22 09:11:12,092 INFO L226 Difference]: Without dead ends: 77510 [2020-12-22 09:11:12,131 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 09:11:12,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77510 states. [2020-12-22 09:11:16,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77510 to 77508. [2020-12-22 09:11:16,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77508 states. [2020-12-22 09:11:16,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77508 states to 77508 states and 128553 transitions. [2020-12-22 09:11:16,212 INFO L78 Accepts]: Start accepts. Automaton has 77508 states and 128553 transitions. Word has length 215 [2020-12-22 09:11:16,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:16,212 INFO L481 AbstractCegarLoop]: Abstraction has 77508 states and 128553 transitions. [2020-12-22 09:11:16,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:11:16,213 INFO L276 IsEmpty]: Start isEmpty. Operand 77508 states and 128553 transitions. [2020-12-22 09:11:16,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-12-22 09:11:16,219 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:16,219 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:11:16,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:11:16,219 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:16,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:16,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1317250802, now seen corresponding path program 1 times [2020-12-22 09:11:16,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:16,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319400379] [2020-12-22 09:11:16,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:16,397 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 09:11:16,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319400379] [2020-12-22 09:11:16,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:16,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:11:16,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965834109] [2020-12-22 09:11:16,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:11:16,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:16,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:11:16,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:16,400 INFO L87 Difference]: Start difference. First operand 77508 states and 128553 transitions. Second operand 3 states. [2020-12-22 09:11:22,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:22,055 INFO L93 Difference]: Finished difference Result 169398 states and 281127 transitions. [2020-12-22 09:11:22,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:11:22,056 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2020-12-22 09:11:22,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:22,432 INFO L225 Difference]: With dead ends: 169398 [2020-12-22 09:11:22,432 INFO L226 Difference]: Without dead ends: 116781 [2020-12-22 09:11:22,488 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 09:11:22,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116781 states. [2020-12-22 09:11:28,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116781 to 116779. [2020-12-22 09:11:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116779 states. [2020-12-22 09:11:28,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116779 states to 116779 states and 193214 transitions. [2020-12-22 09:11:28,708 INFO L78 Accepts]: Start accepts. Automaton has 116779 states and 193214 transitions. Word has length 215 [2020-12-22 09:11:28,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:28,709 INFO L481 AbstractCegarLoop]: Abstraction has 116779 states and 193214 transitions. [2020-12-22 09:11:28,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:11:28,709 INFO L276 IsEmpty]: Start isEmpty. Operand 116779 states and 193214 transitions. [2020-12-22 09:11:28,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-12-22 09:11:28,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:28,713 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:11:28,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:11:28,714 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:28,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:28,714 INFO L82 PathProgramCache]: Analyzing trace with hash 496956088, now seen corresponding path program 1 times [2020-12-22 09:11:28,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:28,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243672892] [2020-12-22 09:11:28,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:28,851 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 09:11:28,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243672892] [2020-12-22 09:11:28,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:28,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:11:28,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31641264] [2020-12-22 09:11:28,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:11:28,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:28,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:11:28,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:28,854 INFO L87 Difference]: Start difference. First operand 116779 states and 193214 transitions. Second operand 3 states. [2020-12-22 09:11:37,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:37,073 INFO L93 Difference]: Finished difference Result 256262 states and 425613 transitions. [2020-12-22 09:11:37,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:11:37,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2020-12-22 09:11:37,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:37,513 INFO L225 Difference]: With dead ends: 256262 [2020-12-22 09:11:37,513 INFO L226 Difference]: Without dead ends: 176179 [2020-12-22 09:11:37,588 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 09:11:37,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176179 states. [2020-12-22 09:11:46,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176179 to 176177. [2020-12-22 09:11:46,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176177 states. [2020-12-22 09:11:46,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176177 states to 176177 states and 291263 transitions. [2020-12-22 09:11:46,643 INFO L78 Accepts]: Start accepts. Automaton has 176177 states and 291263 transitions. Word has length 215 [2020-12-22 09:11:46,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:46,643 INFO L481 AbstractCegarLoop]: Abstraction has 176177 states and 291263 transitions. [2020-12-22 09:11:46,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:11:46,643 INFO L276 IsEmpty]: Start isEmpty. Operand 176177 states and 291263 transitions. [2020-12-22 09:11:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-12-22 09:11:46,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:46,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:11:46,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:11:46,646 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:46,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:46,647 INFO L82 PathProgramCache]: Analyzing trace with hash -2118182415, now seen corresponding path program 1 times [2020-12-22 09:11:46,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:46,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448368505] [2020-12-22 09:11:46,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:47,196 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 09:11:47,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448368505] [2020-12-22 09:11:47,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:47,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:11:47,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108302685] [2020-12-22 09:11:47,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:11:47,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:47,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:11:47,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:11:47,200 INFO L87 Difference]: Start difference. First operand 176177 states and 291263 transitions. Second operand 4 states.