/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/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 10:23:41,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 10:23:41,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 10:23:41,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 10:23:41,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 10:23:41,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 10:23:41,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 10:23:41,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 10:23:41,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 10:23:41,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 10:23:41,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 10:23:41,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 10:23:41,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 10:23:41,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 10:23:41,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 10:23:41,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 10:23:41,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 10:23:41,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 10:23:41,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 10:23:41,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 10:23:41,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 10:23:41,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 10:23:41,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 10:23:41,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 10:23:41,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 10:23:41,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 10:23:41,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 10:23:41,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 10:23:41,192 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 10:23:41,219 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 10:23:41,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 10:23:41,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 10:23:41,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 10:23:41,222 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 10:23:41,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 10:23:41,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 10:23:41,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 10:23:41,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 10:23:41,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 10:23:41,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 10:23:41,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 10:23:41,224 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 10:23:41,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 10:23:41,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 10:23:41,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 10:23:41,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 10:23:41,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:23:41,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 10:23:41,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 10:23:41,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 10:23:41,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 10:23:41,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 10:23:41,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 10:23:41,228 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 10:23:41,228 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 10:23:41,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 10:23:41,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 10:23:41,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 10:23:41,650 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 10:23:41,651 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 10:23:41,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c [2020-12-22 10:23:41,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe25dfc1/305487eae4c04edcbae11591101c607c/FLAG9cbca5af7 [2020-12-22 10:23:42,745 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 10:23:42,746 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c [2020-12-22 10:23:42,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe25dfc1/305487eae4c04edcbae11591101c607c/FLAG9cbca5af7 [2020-12-22 10:23:43,258 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe25dfc1/305487eae4c04edcbae11591101c607c [2020-12-22 10:23:43,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 10:23:43,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 10:23:43,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 10:23:43,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 10:23:43,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 10:23:43,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:23:43" (1/1) ... [2020-12-22 10:23:43,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aff7c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:43, skipping insertion in model container [2020-12-22 10:23:43,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:23:43" (1/1) ... [2020-12-22 10:23:43,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 10:23:43,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 10:23:43,851 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/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c[26875,26888] [2020-12-22 10:23:43,914 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/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c[32187,32200] [2020-12-22 10:23:44,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:23:44,991 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 10:23:45,078 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/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c[26875,26888] [2020-12-22 10:23:45,098 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/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c[32187,32200] [2020-12-22 10:23:45,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:23:45,805 INFO L208 MainTranslator]: Completed translation [2020-12-22 10:23:45,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:45 WrapperNode [2020-12-22 10:23:45,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 10:23:45,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 10:23:45,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 10:23:45,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 10:23:45,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:45" (1/1) ... [2020-12-22 10:23:45,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:45" (1/1) ... [2020-12-22 10:23:46,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 10:23:46,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 10:23:46,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 10:23:46,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 10:23:46,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:45" (1/1) ... [2020-12-22 10:23:46,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:45" (1/1) ... [2020-12-22 10:23:46,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:45" (1/1) ... [2020-12-22 10:23:46,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:45" (1/1) ... [2020-12-22 10:23:46,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:45" (1/1) ... [2020-12-22 10:23:46,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:45" (1/1) ... [2020-12-22 10:23:46,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:45" (1/1) ... [2020-12-22 10:23:46,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 10:23:46,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 10:23:46,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 10:23:46,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 10:23:46,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:45" (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 10:23:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 10:23:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 10:23:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 10:23:46,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 10:23:52,652 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 10:23:52,653 INFO L299 CfgBuilder]: Removed 42 assume(true) statements. [2020-12-22 10:23:52,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:23:52 BoogieIcfgContainer [2020-12-22 10:23:52,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 10:23:52,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 10:23:52,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 10:23:52,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 10:23:52,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:23:43" (1/3) ... [2020-12-22 10:23:52,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764a9143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:23:52, skipping insertion in model container [2020-12-22 10:23:52,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:23:45" (2/3) ... [2020-12-22 10:23:52,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764a9143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:23:52, skipping insertion in model container [2020-12-22 10:23:52,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:23:52" (3/3) ... [2020-12-22 10:23:52,667 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c [2020-12-22 10:23:52,674 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 10:23:52,680 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 10:23:52,701 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 10:23:52,747 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 10:23:52,748 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 10:23:52,748 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 10:23:52,748 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 10:23:52,748 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 10:23:52,748 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 10:23:52,748 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 10:23:52,748 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 10:23:52,783 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states. [2020-12-22 10:23:52,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 10:23:52,795 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:23:52,796 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] [2020-12-22 10:23:52,796 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:23:52,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:23:52,803 INFO L82 PathProgramCache]: Analyzing trace with hash -805214309, now seen corresponding path program 1 times [2020-12-22 10:23:52,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:23:52,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177636378] [2020-12-22 10:23:52,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:23:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:23:53,149 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 10:23:53,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177636378] [2020-12-22 10:23:53,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:23:53,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:23:53,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896921393] [2020-12-22 10:23:53,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 10:23:53,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:23:53,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 10:23:53,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:23:53,181 INFO L87 Difference]: Start difference. First operand 964 states. Second operand 2 states. [2020-12-22 10:23:53,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:23:53,286 INFO L93 Difference]: Finished difference Result 1859 states and 3514 transitions. [2020-12-22 10:23:53,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 10:23:53,287 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-12-22 10:23:53,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:23:53,326 INFO L225 Difference]: With dead ends: 1859 [2020-12-22 10:23:53,326 INFO L226 Difference]: Without dead ends: 898 [2020-12-22 10:23:53,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 10:23:53,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-12-22 10:23:53,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2020-12-22 10:23:53,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-12-22 10:23:53,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1690 transitions. [2020-12-22 10:23:53,458 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1690 transitions. Word has length 46 [2020-12-22 10:23:53,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:23:53,459 INFO L481 AbstractCegarLoop]: Abstraction has 898 states and 1690 transitions. [2020-12-22 10:23:53,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 10:23:53,459 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1690 transitions. [2020-12-22 10:23:53,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 10:23:53,462 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:23:53,462 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] [2020-12-22 10:23:53,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 10:23:53,462 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:23:53,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:23:53,463 INFO L82 PathProgramCache]: Analyzing trace with hash 2117945689, now seen corresponding path program 1 times [2020-12-22 10:23:53,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:23:53,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919863728] [2020-12-22 10:23:53,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:23:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:23:53,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:23:53,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919863728] [2020-12-22 10:23:53,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:23:53,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:23:53,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711217677] [2020-12-22 10:23:53,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 10:23:53,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:23:53,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 10:23:53,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:23:53,696 INFO L87 Difference]: Start difference. First operand 898 states and 1690 transitions. Second operand 5 states. [2020-12-22 10:23:53,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:23:53,903 INFO L93 Difference]: Finished difference Result 979 states and 1817 transitions. [2020-12-22 10:23:53,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 10:23:53,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-12-22 10:23:53,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:23:53,992 INFO L225 Difference]: With dead ends: 979 [2020-12-22 10:23:53,992 INFO L226 Difference]: Without dead ends: 898 [2020-12-22 10:23:53,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 10:23:53,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-12-22 10:23:54,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 898. [2020-12-22 10:23:54,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-12-22 10:23:54,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1629 transitions. [2020-12-22 10:23:54,036 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1629 transitions. Word has length 46 [2020-12-22 10:23:54,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:23:54,036 INFO L481 AbstractCegarLoop]: Abstraction has 898 states and 1629 transitions. [2020-12-22 10:23:54,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 10:23:54,037 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1629 transitions. [2020-12-22 10:23:54,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 10:23:54,040 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:23:54,040 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] [2020-12-22 10:23:54,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 10:23:54,042 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:23:54,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:23:54,045 INFO L82 PathProgramCache]: Analyzing trace with hash 90921877, now seen corresponding path program 1 times [2020-12-22 10:23:54,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:23:54,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368493537] [2020-12-22 10:23:54,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:23:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:23:54,183 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 10:23:54,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368493537] [2020-12-22 10:23:54,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:23:54,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:23:54,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949319022] [2020-12-22 10:23:54,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:23:54,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:23:54,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:23:54,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:23:54,186 INFO L87 Difference]: Start difference. First operand 898 states and 1629 transitions. Second operand 3 states. [2020-12-22 10:23:59,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:23:59,961 INFO L93 Difference]: Finished difference Result 2402 states and 4502 transitions. [2020-12-22 10:23:59,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:23:59,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-12-22 10:23:59,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:23:59,973 INFO L225 Difference]: With dead ends: 2402 [2020-12-22 10:23:59,973 INFO L226 Difference]: Without dead ends: 1649 [2020-12-22 10:23:59,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 10:23:59,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2020-12-22 10:24:00,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1649. [2020-12-22 10:24:00,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1649 states. [2020-12-22 10:24:00,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2656 transitions. [2020-12-22 10:24:00,027 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2656 transitions. Word has length 48 [2020-12-22 10:24:00,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:00,027 INFO L481 AbstractCegarLoop]: Abstraction has 1649 states and 2656 transitions. [2020-12-22 10:24:00,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:00,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2656 transitions. [2020-12-22 10:24:00,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:24:00,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:00,031 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] [2020-12-22 10:24:00,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 10:24:00,031 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:00,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:00,032 INFO L82 PathProgramCache]: Analyzing trace with hash 211182729, now seen corresponding path program 1 times [2020-12-22 10:24:00,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:00,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187055914] [2020-12-22 10:24:00,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:00,283 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 10:24:00,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187055914] [2020-12-22 10:24:00,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:00,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:24:00,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962630084] [2020-12-22 10:24:00,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:24:00,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:00,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:24:00,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:00,290 INFO L87 Difference]: Start difference. First operand 1649 states and 2656 transitions. Second operand 3 states. [2020-12-22 10:24:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:00,343 INFO L93 Difference]: Finished difference Result 1797 states and 2892 transitions. [2020-12-22 10:24:00,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:24:00,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:24:00,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:00,355 INFO L225 Difference]: With dead ends: 1797 [2020-12-22 10:24:00,356 INFO L226 Difference]: Without dead ends: 1720 [2020-12-22 10:24:00,357 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 10:24:00,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2020-12-22 10:24:00,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1718. [2020-12-22 10:24:00,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1718 states. [2020-12-22 10:24:00,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2767 transitions. [2020-12-22 10:24:00,406 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2767 transitions. Word has length 106 [2020-12-22 10:24:00,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:00,407 INFO L481 AbstractCegarLoop]: Abstraction has 1718 states and 2767 transitions. [2020-12-22 10:24:00,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:00,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2767 transitions. [2020-12-22 10:24:00,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:24:00,410 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:00,410 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] [2020-12-22 10:24:00,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 10:24:00,411 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:00,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:00,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1458691583, now seen corresponding path program 1 times [2020-12-22 10:24:00,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:00,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277324920] [2020-12-22 10:24:00,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:00,586 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 10:24:00,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277324920] [2020-12-22 10:24:00,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:00,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:24:00,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59867008] [2020-12-22 10:24:00,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:24:00,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:00,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:24:00,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:00,589 INFO L87 Difference]: Start difference. First operand 1718 states and 2767 transitions. Second operand 3 states. [2020-12-22 10:24:00,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:00,640 INFO L93 Difference]: Finished difference Result 1998 states and 3215 transitions. [2020-12-22 10:24:00,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:24:00,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:24:00,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:00,652 INFO L225 Difference]: With dead ends: 1998 [2020-12-22 10:24:00,652 INFO L226 Difference]: Without dead ends: 1852 [2020-12-22 10:24:00,653 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 10:24:00,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2020-12-22 10:24:00,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1850. [2020-12-22 10:24:00,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1850 states. [2020-12-22 10:24:00,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 2978 transitions. [2020-12-22 10:24:00,704 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 2978 transitions. Word has length 106 [2020-12-22 10:24:00,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:00,705 INFO L481 AbstractCegarLoop]: Abstraction has 1850 states and 2978 transitions. [2020-12-22 10:24:00,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:00,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 2978 transitions. [2020-12-22 10:24:00,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:24:00,706 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:00,706 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] [2020-12-22 10:24:00,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 10:24:00,707 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:00,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:00,707 INFO L82 PathProgramCache]: Analyzing trace with hash 717259381, now seen corresponding path program 1 times [2020-12-22 10:24:00,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:00,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916467481] [2020-12-22 10:24:00,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:00,834 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 10:24:00,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916467481] [2020-12-22 10:24:00,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:00,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:24:00,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11275708] [2020-12-22 10:24:00,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:24:00,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:00,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:24:00,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:00,837 INFO L87 Difference]: Start difference. First operand 1850 states and 2978 transitions. Second operand 3 states. [2020-12-22 10:24:00,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:00,890 INFO L93 Difference]: Finished difference Result 2382 states and 3828 transitions. [2020-12-22 10:24:00,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:24:00,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:24:00,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:00,902 INFO L225 Difference]: With dead ends: 2382 [2020-12-22 10:24:00,903 INFO L226 Difference]: Without dead ends: 2104 [2020-12-22 10:24:00,904 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 10:24:00,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2020-12-22 10:24:00,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 2102. [2020-12-22 10:24:00,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2102 states. [2020-12-22 10:24:00,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 3378 transitions. [2020-12-22 10:24:00,965 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 3378 transitions. Word has length 106 [2020-12-22 10:24:00,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:00,966 INFO L481 AbstractCegarLoop]: Abstraction has 2102 states and 3378 transitions. [2020-12-22 10:24:00,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:00,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 3378 transitions. [2020-12-22 10:24:00,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:24:00,967 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:00,967 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] [2020-12-22 10:24:00,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 10:24:00,968 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:00,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:00,969 INFO L82 PathProgramCache]: Analyzing trace with hash -28323349, now seen corresponding path program 1 times [2020-12-22 10:24:00,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:00,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402278005] [2020-12-22 10:24:00,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:01,069 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 10:24:01,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402278005] [2020-12-22 10:24:01,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:01,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:24:01,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526971797] [2020-12-22 10:24:01,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:24:01,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:01,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:24:01,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:01,072 INFO L87 Difference]: Start difference. First operand 2102 states and 3378 transitions. Second operand 3 states. [2020-12-22 10:24:01,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:01,136 INFO L93 Difference]: Finished difference Result 3114 states and 4988 transitions. [2020-12-22 10:24:01,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:24:01,136 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:24:01,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:01,150 INFO L225 Difference]: With dead ends: 3114 [2020-12-22 10:24:01,150 INFO L226 Difference]: Without dead ends: 2584 [2020-12-22 10:24:01,152 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 10:24:01,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2020-12-22 10:24:01,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 2582. [2020-12-22 10:24:01,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2582 states. [2020-12-22 10:24:01,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2582 states to 2582 states and 4134 transitions. [2020-12-22 10:24:01,228 INFO L78 Accepts]: Start accepts. Automaton has 2582 states and 4134 transitions. Word has length 106 [2020-12-22 10:24:01,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:01,228 INFO L481 AbstractCegarLoop]: Abstraction has 2582 states and 4134 transitions. [2020-12-22 10:24:01,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:01,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2582 states and 4134 transitions. [2020-12-22 10:24:01,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:24:01,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:01,230 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] [2020-12-22 10:24:01,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 10:24:01,230 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:01,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:01,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1968354207, now seen corresponding path program 1 times [2020-12-22 10:24:01,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:01,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974957220] [2020-12-22 10:24:01,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:24:01,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974957220] [2020-12-22 10:24:01,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:01,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:24:01,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349419140] [2020-12-22 10:24:01,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:24:01,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:01,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:24:01,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:01,317 INFO L87 Difference]: Start difference. First operand 2582 states and 4134 transitions. Second operand 3 states. [2020-12-22 10:24:01,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:01,402 INFO L93 Difference]: Finished difference Result 4506 states and 7176 transitions. [2020-12-22 10:24:01,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:24:01,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:24:01,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:01,420 INFO L225 Difference]: With dead ends: 4506 [2020-12-22 10:24:01,420 INFO L226 Difference]: Without dead ends: 3496 [2020-12-22 10:24:01,423 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 10:24:01,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2020-12-22 10:24:01,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 3494. [2020-12-22 10:24:01,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3494 states. [2020-12-22 10:24:01,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3494 states to 3494 states and 5558 transitions. [2020-12-22 10:24:01,538 INFO L78 Accepts]: Start accepts. Automaton has 3494 states and 5558 transitions. Word has length 106 [2020-12-22 10:24:01,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:01,538 INFO L481 AbstractCegarLoop]: Abstraction has 3494 states and 5558 transitions. [2020-12-22 10:24:01,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:01,538 INFO L276 IsEmpty]: Start isEmpty. Operand 3494 states and 5558 transitions. [2020-12-22 10:24:01,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:24:01,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:01,540 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] [2020-12-22 10:24:01,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 10:24:01,540 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:01,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:01,541 INFO L82 PathProgramCache]: Analyzing trace with hash 732328407, now seen corresponding path program 1 times [2020-12-22 10:24:01,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:01,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828940153] [2020-12-22 10:24:01,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:01,624 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 10:24:01,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828940153] [2020-12-22 10:24:01,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:01,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:24:01,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393225197] [2020-12-22 10:24:01,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:24:01,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:01,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:24:01,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:01,626 INFO L87 Difference]: Start difference. First operand 3494 states and 5558 transitions. Second operand 3 states. [2020-12-22 10:24:01,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:01,775 INFO L93 Difference]: Finished difference Result 7146 states and 11288 transitions. [2020-12-22 10:24:01,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:24:01,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:24:01,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:01,805 INFO L225 Difference]: With dead ends: 7146 [2020-12-22 10:24:01,806 INFO L226 Difference]: Without dead ends: 5224 [2020-12-22 10:24:01,811 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 10:24:01,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5224 states. [2020-12-22 10:24:02,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5224 to 5222. [2020-12-22 10:24:02,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5222 states. [2020-12-22 10:24:02,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5222 states to 5222 states and 8230 transitions. [2020-12-22 10:24:02,050 INFO L78 Accepts]: Start accepts. Automaton has 5222 states and 8230 transitions. Word has length 106 [2020-12-22 10:24:02,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:02,051 INFO L481 AbstractCegarLoop]: Abstraction has 5222 states and 8230 transitions. [2020-12-22 10:24:02,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:02,051 INFO L276 IsEmpty]: Start isEmpty. Operand 5222 states and 8230 transitions. [2020-12-22 10:24:02,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:24:02,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:02,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:02,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 10:24:02,055 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:02,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:02,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1070121549, now seen corresponding path program 1 times [2020-12-22 10:24:02,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:02,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936497251] [2020-12-22 10:24:02,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:02,243 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 10:24:02,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936497251] [2020-12-22 10:24:02,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:02,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:24:02,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544307009] [2020-12-22 10:24:02,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:24:02,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:02,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:24:02,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:02,249 INFO L87 Difference]: Start difference. First operand 5222 states and 8230 transitions. Second operand 3 states. [2020-12-22 10:24:02,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:02,520 INFO L93 Difference]: Finished difference Result 12138 states and 18984 transitions. [2020-12-22 10:24:02,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:24:02,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 10:24:02,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:02,582 INFO L225 Difference]: With dead ends: 12138 [2020-12-22 10:24:02,582 INFO L226 Difference]: Without dead ends: 8488 [2020-12-22 10:24:02,591 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 10:24:02,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8488 states. [2020-12-22 10:24:02,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8488 to 8486. [2020-12-22 10:24:02,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8486 states. [2020-12-22 10:24:02,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8486 states to 8486 states and 13222 transitions. [2020-12-22 10:24:02,962 INFO L78 Accepts]: Start accepts. Automaton has 8486 states and 13222 transitions. Word has length 106 [2020-12-22 10:24:02,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:02,963 INFO L481 AbstractCegarLoop]: Abstraction has 8486 states and 13222 transitions. [2020-12-22 10:24:02,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:02,963 INFO L276 IsEmpty]: Start isEmpty. Operand 8486 states and 13222 transitions. [2020-12-22 10:24:02,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 10:24:02,964 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:02,964 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] [2020-12-22 10:24:02,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 10:24:02,965 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:02,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:02,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1478760321, now seen corresponding path program 1 times [2020-12-22 10:24:02,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:02,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554895952] [2020-12-22 10:24:02,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:03,169 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 10:24:03,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554895952] [2020-12-22 10:24:03,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:03,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:24:03,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292660258] [2020-12-22 10:24:03,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:24:03,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:03,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:24:03,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:24:03,174 INFO L87 Difference]: Start difference. First operand 8486 states and 13222 transitions. Second operand 10 states. [2020-12-22 10:24:08,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:08,199 INFO L93 Difference]: Finished difference Result 119110 states and 184246 transitions. [2020-12-22 10:24:08,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 10:24:08,200 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 106 [2020-12-22 10:24:08,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:08,649 INFO L225 Difference]: With dead ends: 119110 [2020-12-22 10:24:08,649 INFO L226 Difference]: Without dead ends: 112196 [2020-12-22 10:24:08,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-12-22 10:24:08,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112196 states. [2020-12-22 10:24:11,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112196 to 15398. [2020-12-22 10:24:11,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15398 states. [2020-12-22 10:24:11,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15398 states to 15398 states and 23654 transitions. [2020-12-22 10:24:11,072 INFO L78 Accepts]: Start accepts. Automaton has 15398 states and 23654 transitions. Word has length 106 [2020-12-22 10:24:11,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:11,073 INFO L481 AbstractCegarLoop]: Abstraction has 15398 states and 23654 transitions. [2020-12-22 10:24:11,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:24:11,073 INFO L276 IsEmpty]: Start isEmpty. Operand 15398 states and 23654 transitions. [2020-12-22 10:24:11,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:24:11,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:11,075 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] [2020-12-22 10:24:11,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 10:24:11,077 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:11,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:11,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1961193007, now seen corresponding path program 1 times [2020-12-22 10:24:11,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:11,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142360644] [2020-12-22 10:24:11,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:11,292 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 10:24:11,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142360644] [2020-12-22 10:24:11,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:11,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:24:11,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532758089] [2020-12-22 10:24:11,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:24:11,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:11,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:24:11,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:11,295 INFO L87 Difference]: Start difference. First operand 15398 states and 23654 transitions. Second operand 3 states. [2020-12-22 10:24:12,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:12,699 INFO L93 Difference]: Finished difference Result 41642 states and 63464 transitions. [2020-12-22 10:24:12,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:24:12,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 10:24:12,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:12,796 INFO L225 Difference]: With dead ends: 41642 [2020-12-22 10:24:12,797 INFO L226 Difference]: Without dead ends: 27816 [2020-12-22 10:24:12,815 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 10:24:12,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27816 states. [2020-12-22 10:24:14,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27816 to 27558. [2020-12-22 10:24:14,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27558 states. [2020-12-22 10:24:14,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27558 states to 27558 states and 41446 transitions. [2020-12-22 10:24:14,471 INFO L78 Accepts]: Start accepts. Automaton has 27558 states and 41446 transitions. Word has length 108 [2020-12-22 10:24:14,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:14,471 INFO L481 AbstractCegarLoop]: Abstraction has 27558 states and 41446 transitions. [2020-12-22 10:24:14,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:14,472 INFO L276 IsEmpty]: Start isEmpty. Operand 27558 states and 41446 transitions. [2020-12-22 10:24:14,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 10:24:14,473 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:14,473 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] [2020-12-22 10:24:14,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 10:24:14,473 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:14,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:14,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1894699495, now seen corresponding path program 1 times [2020-12-22 10:24:14,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:14,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145763110] [2020-12-22 10:24:14,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:14,848 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 10:24:14,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145763110] [2020-12-22 10:24:14,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:14,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:24:14,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411497003] [2020-12-22 10:24:14,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:24:14,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:14,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:24:14,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:24:14,851 INFO L87 Difference]: Start difference. First operand 27558 states and 41446 transitions. Second operand 10 states. [2020-12-22 10:24:16,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:16,969 INFO L93 Difference]: Finished difference Result 53546 states and 80360 transitions. [2020-12-22 10:24:16,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:24:16,970 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2020-12-22 10:24:16,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:17,004 INFO L225 Difference]: With dead ends: 53546 [2020-12-22 10:24:17,005 INFO L226 Difference]: Without dead ends: 27560 [2020-12-22 10:24:17,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-12-22 10:24:17,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27560 states. [2020-12-22 10:24:18,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27560 to 27558. [2020-12-22 10:24:18,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27558 states. [2020-12-22 10:24:18,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27558 states to 27558 states and 41190 transitions. [2020-12-22 10:24:18,462 INFO L78 Accepts]: Start accepts. Automaton has 27558 states and 41190 transitions. Word has length 108 [2020-12-22 10:24:18,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:18,463 INFO L481 AbstractCegarLoop]: Abstraction has 27558 states and 41190 transitions. [2020-12-22 10:24:18,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:24:18,463 INFO L276 IsEmpty]: Start isEmpty. Operand 27558 states and 41190 transitions. [2020-12-22 10:24:18,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 10:24:18,465 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:18,465 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] [2020-12-22 10:24:18,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 10:24:18,466 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:18,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:18,467 INFO L82 PathProgramCache]: Analyzing trace with hash 979135041, now seen corresponding path program 1 times [2020-12-22 10:24:18,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:18,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63555812] [2020-12-22 10:24:18,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:18,622 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 10:24:18,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63555812] [2020-12-22 10:24:18,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:18,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:24:18,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615060713] [2020-12-22 10:24:18,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 10:24:18,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:18,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 10:24:18,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 10:24:18,624 INFO L87 Difference]: Start difference. First operand 27558 states and 41190 transitions. Second operand 6 states. [2020-12-22 10:24:20,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:20,712 INFO L93 Difference]: Finished difference Result 53544 states and 79847 transitions. [2020-12-22 10:24:20,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 10:24:20,713 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2020-12-22 10:24:20,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:20,738 INFO L225 Difference]: With dead ends: 53544 [2020-12-22 10:24:20,738 INFO L226 Difference]: Without dead ends: 27558 [2020-12-22 10:24:20,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:24:20,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27558 states. [2020-12-22 10:24:22,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27558 to 27558. [2020-12-22 10:24:22,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27558 states. [2020-12-22 10:24:22,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27558 states to 27558 states and 40934 transitions. [2020-12-22 10:24:22,266 INFO L78 Accepts]: Start accepts. Automaton has 27558 states and 40934 transitions. Word has length 109 [2020-12-22 10:24:22,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:22,266 INFO L481 AbstractCegarLoop]: Abstraction has 27558 states and 40934 transitions. [2020-12-22 10:24:22,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 10:24:22,266 INFO L276 IsEmpty]: Start isEmpty. Operand 27558 states and 40934 transitions. [2020-12-22 10:24:22,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 10:24:22,268 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:22,268 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] [2020-12-22 10:24:22,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 10:24:22,268 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:22,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:22,269 INFO L82 PathProgramCache]: Analyzing trace with hash 278070463, now seen corresponding path program 1 times [2020-12-22 10:24:22,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:22,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77894201] [2020-12-22 10:24:22,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:22,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:24:22,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77894201] [2020-12-22 10:24:22,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:22,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:24:22,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801967298] [2020-12-22 10:24:22,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:24:22,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:22,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:24:22,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:24:22,416 INFO L87 Difference]: Start difference. First operand 27558 states and 40934 transitions. Second operand 8 states. [2020-12-22 10:24:25,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:25,796 INFO L93 Difference]: Finished difference Result 46928 states and 69147 transitions. [2020-12-22 10:24:25,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:24:25,796 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-12-22 10:24:25,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:25,839 INFO L225 Difference]: With dead ends: 46928 [2020-12-22 10:24:25,839 INFO L226 Difference]: Without dead ends: 46926 [2020-12-22 10:24:25,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:24:25,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46926 states. [2020-12-22 10:24:27,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46926 to 28326. [2020-12-22 10:24:27,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28326 states. [2020-12-22 10:24:27,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28326 states to 28326 states and 41574 transitions. [2020-12-22 10:24:27,731 INFO L78 Accepts]: Start accepts. Automaton has 28326 states and 41574 transitions. Word has length 109 [2020-12-22 10:24:27,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:27,731 INFO L481 AbstractCegarLoop]: Abstraction has 28326 states and 41574 transitions. [2020-12-22 10:24:27,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:24:27,731 INFO L276 IsEmpty]: Start isEmpty. Operand 28326 states and 41574 transitions. [2020-12-22 10:24:27,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 10:24:27,733 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:27,733 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] [2020-12-22 10:24:27,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 10:24:27,733 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:27,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:27,734 INFO L82 PathProgramCache]: Analyzing trace with hash 171324818, now seen corresponding path program 1 times [2020-12-22 10:24:27,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:27,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134055497] [2020-12-22 10:24:27,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:27,814 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 10:24:27,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134055497] [2020-12-22 10:24:27,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:27,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:24:27,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090062674] [2020-12-22 10:24:27,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:24:27,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:27,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:24:27,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:24:27,817 INFO L87 Difference]: Start difference. First operand 28326 states and 41574 transitions. Second operand 3 states. [2020-12-22 10:24:30,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:30,235 INFO L93 Difference]: Finished difference Result 55469 states and 81516 transitions. [2020-12-22 10:24:30,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:24:30,235 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2020-12-22 10:24:30,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:30,273 INFO L225 Difference]: With dead ends: 55469 [2020-12-22 10:24:30,273 INFO L226 Difference]: Without dead ends: 40874 [2020-12-22 10:24:30,284 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 10:24:30,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40874 states. [2020-12-22 10:24:32,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40874 to 40872. [2020-12-22 10:24:32,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40872 states. [2020-12-22 10:24:32,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40872 states to 40872 states and 59624 transitions. [2020-12-22 10:24:32,909 INFO L78 Accepts]: Start accepts. Automaton has 40872 states and 59624 transitions. Word has length 110 [2020-12-22 10:24:32,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:32,909 INFO L481 AbstractCegarLoop]: Abstraction has 40872 states and 59624 transitions. [2020-12-22 10:24:32,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:24:32,909 INFO L276 IsEmpty]: Start isEmpty. Operand 40872 states and 59624 transitions. [2020-12-22 10:24:32,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 10:24:32,911 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:32,911 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:32,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 10:24:32,911 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:32,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:32,912 INFO L82 PathProgramCache]: Analyzing trace with hash 775234275, now seen corresponding path program 1 times [2020-12-22 10:24:32,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:32,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557587760] [2020-12-22 10:24:32,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:33,064 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:24:33,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557587760] [2020-12-22 10:24:33,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:33,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:24:33,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296001460] [2020-12-22 10:24:33,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 10:24:33,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:33,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 10:24:33,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:24:33,066 INFO L87 Difference]: Start difference. First operand 40872 states and 59624 transitions. Second operand 4 states. [2020-12-22 10:24:43,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:24:43,087 INFO L93 Difference]: Finished difference Result 43917 states and 64589 transitions. [2020-12-22 10:24:43,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 10:24:43,088 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-12-22 10:24:43,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:24:43,127 INFO L225 Difference]: With dead ends: 43917 [2020-12-22 10:24:43,128 INFO L226 Difference]: Without dead ends: 42376 [2020-12-22 10:24:43,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 10:24:43,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42376 states. [2020-12-22 10:24:45,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42376 to 42374. [2020-12-22 10:24:45,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42374 states. [2020-12-22 10:24:45,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42374 states to 42374 states and 61193 transitions. [2020-12-22 10:24:45,558 INFO L78 Accepts]: Start accepts. Automaton has 42374 states and 61193 transitions. Word has length 119 [2020-12-22 10:24:45,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:24:45,558 INFO L481 AbstractCegarLoop]: Abstraction has 42374 states and 61193 transitions. [2020-12-22 10:24:45,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 10:24:45,559 INFO L276 IsEmpty]: Start isEmpty. Operand 42374 states and 61193 transitions. [2020-12-22 10:24:45,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 10:24:45,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:24:45,581 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:45,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 10:24:45,582 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:24:45,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:24:45,582 INFO L82 PathProgramCache]: Analyzing trace with hash 45078639, now seen corresponding path program 1 times [2020-12-22 10:24:45,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:24:45,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140857292] [2020-12-22 10:24:45,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:24:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:24:45,774 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 10:24:45,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140857292] [2020-12-22 10:24:45,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:24:45,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:24:45,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624439171] [2020-12-22 10:24:45,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:24:45,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:24:45,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:24:45,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:24:45,776 INFO L87 Difference]: Start difference. First operand 42374 states and 61193 transitions. Second operand 10 states. [2020-12-22 10:25:04,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:25:04,407 INFO L93 Difference]: Finished difference Result 364312 states and 528530 transitions. [2020-12-22 10:25:04,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:25:04,408 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 148 [2020-12-22 10:25:04,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:25:05,156 INFO L225 Difference]: With dead ends: 364312 [2020-12-22 10:25:05,156 INFO L226 Difference]: Without dead ends: 325014 [2020-12-22 10:25:05,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:25:05,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325014 states. [2020-12-22 10:25:12,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325014 to 81670. [2020-12-22 10:25:12,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81670 states. [2020-12-22 10:25:12,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81670 states to 81670 states and 117897 transitions. [2020-12-22 10:25:12,891 INFO L78 Accepts]: Start accepts. Automaton has 81670 states and 117897 transitions. Word has length 148 [2020-12-22 10:25:12,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:25:12,892 INFO L481 AbstractCegarLoop]: Abstraction has 81670 states and 117897 transitions. [2020-12-22 10:25:12,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:25:12,892 INFO L276 IsEmpty]: Start isEmpty. Operand 81670 states and 117897 transitions. [2020-12-22 10:25:12,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 10:25:12,918 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:25:12,918 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:25:12,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 10:25:12,919 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:25:12,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:25:12,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1723704177, now seen corresponding path program 1 times [2020-12-22 10:25:12,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:25:12,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726262622] [2020-12-22 10:25:12,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:25:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:25:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 10:25:13,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726262622] [2020-12-22 10:25:13,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:25:13,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:25:13,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100062932] [2020-12-22 10:25:13,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:25:13,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:25:13,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:25:13,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:25:13,138 INFO L87 Difference]: Start difference. First operand 81670 states and 117897 transitions. Second operand 10 states. [2020-12-22 10:25:37,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:25:37,219 INFO L93 Difference]: Finished difference Result 403608 states and 585234 transitions. [2020-12-22 10:25:37,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:25:37,220 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 148 [2020-12-22 10:25:37,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:25:37,879 INFO L225 Difference]: With dead ends: 403608 [2020-12-22 10:25:37,879 INFO L226 Difference]: Without dead ends: 364310 [2020-12-22 10:25:38,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:25:38,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364310 states. [2020-12-22 10:25:50,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364310 to 140678. [2020-12-22 10:25:50,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140678 states. [2020-12-22 10:25:50,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140678 states to 140678 states and 202633 transitions. [2020-12-22 10:25:50,926 INFO L78 Accepts]: Start accepts. Automaton has 140678 states and 202633 transitions. Word has length 148 [2020-12-22 10:25:50,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:25:50,927 INFO L481 AbstractCegarLoop]: Abstraction has 140678 states and 202633 transitions. [2020-12-22 10:25:50,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:25:50,927 INFO L276 IsEmpty]: Start isEmpty. Operand 140678 states and 202633 transitions. [2020-12-22 10:25:50,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 10:25:50,958 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:25:50,959 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:25:50,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 10:25:50,959 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:25:50,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:25:50,960 INFO L82 PathProgramCache]: Analyzing trace with hash -592064337, now seen corresponding path program 1 times [2020-12-22 10:25:50,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:25:50,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462191671] [2020-12-22 10:25:50,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:25:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:25:51,250 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 10:25:51,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462191671] [2020-12-22 10:25:51,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:25:51,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:25:51,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51288779] [2020-12-22 10:25:51,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:25:51,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:25:51,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:25:51,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:25:51,253 INFO L87 Difference]: Start difference. First operand 140678 states and 202633 transitions. Second operand 10 states. [2020-12-22 10:26:20,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:26:20,429 INFO L93 Difference]: Finished difference Result 442904 states and 641938 transitions. [2020-12-22 10:26:20,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:26:20,429 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 148 [2020-12-22 10:26:20,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:26:21,383 INFO L225 Difference]: With dead ends: 442904 [2020-12-22 10:26:21,383 INFO L226 Difference]: Without dead ends: 403606 [2020-12-22 10:26:21,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:26:21,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403606 states. [2020-12-22 10:26:37,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403606 to 179974. [2020-12-22 10:26:37,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179974 states. [2020-12-22 10:26:38,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179974 states to 179974 states and 259337 transitions. [2020-12-22 10:26:38,356 INFO L78 Accepts]: Start accepts. Automaton has 179974 states and 259337 transitions. Word has length 148 [2020-12-22 10:26:38,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:26:38,357 INFO L481 AbstractCegarLoop]: Abstraction has 179974 states and 259337 transitions. [2020-12-22 10:26:38,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 10:26:38,357 INFO L276 IsEmpty]: Start isEmpty. Operand 179974 states and 259337 transitions. [2020-12-22 10:26:38,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 10:26:38,726 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:26:38,726 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:26:38,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 10:26:38,727 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:26:38,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:26:38,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1827523377, now seen corresponding path program 1 times [2020-12-22 10:26:38,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:26:38,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739005943] [2020-12-22 10:26:38,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:26:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:26:38,947 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 10:26:38,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739005943] [2020-12-22 10:26:38,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:26:38,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 10:26:38,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587186890] [2020-12-22 10:26:38,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 10:26:38,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:26:38,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 10:26:38,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 10:26:38,950 INFO L87 Difference]: Start difference. First operand 179974 states and 259337 transitions. Second operand 10 states. [2020-12-22 10:27:14,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:27:14,281 INFO L93 Difference]: Finished difference Result 482200 states and 698642 transitions. [2020-12-22 10:27:14,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:27:14,281 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 148 [2020-12-22 10:27:14,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:27:15,234 INFO L225 Difference]: With dead ends: 482200 [2020-12-22 10:27:15,235 INFO L226 Difference]: Without dead ends: 442902 [2020-12-22 10:27:15,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:27:15,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442902 states.