/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:44:50,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:44:50,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:44:50,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 07:44:50,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 07:44:50,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 07:44:50,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 07:44:50,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 07:44:50,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 07:44:50,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 07:44:50,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 07:44:50,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 07:44:50,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:44:50,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:44:50,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:44:50,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:44:50,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:44:50,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:44:50,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:44:50,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:44:50,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:44:50,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:44:50,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:44:50,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:44:50,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:44:50,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 07:44:50,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 07:44:50,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 07:44:50,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 07:44:50,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 07:44:50,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 07:44:50,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 07:44:50,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 07:44:50,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:44:50,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:44:50,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:44:50,190 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:44:50,216 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:44:50,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:44:50,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:44:50,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:44:50,219 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:44:50,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:44:50,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:44:50,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:44:50,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:44:50,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:44:50,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:44:50,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:44:50,220 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:44:50,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:44:50,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:44:50,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:44:50,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:44:50,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:44:50,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:44:50,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:44:50,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:44:50,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:44:50,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:44:50,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:44:50,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:44:50,223 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:44:50,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:44:50,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:44:50,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:44:50,637 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:44:50,638 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:44:50,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c [2020-12-22 07:44:50,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a28543ecc/b1cac0413a79471c8450eb1124fa4caa/FLAG2e8b6dc9e [2020-12-22 07:44:51,442 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:44:51,443 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c [2020-12-22 07:44:51,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a28543ecc/b1cac0413a79471c8450eb1124fa4caa/FLAG2e8b6dc9e [2020-12-22 07:44:51,649 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a28543ecc/b1cac0413a79471c8450eb1124fa4caa [2020-12-22 07:44:51,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:44:51,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:44:51,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:44:51,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:44:51,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:44:51,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:44:51" (1/1) ... [2020-12-22 07:44:51,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7189a9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:51, skipping insertion in model container [2020-12-22 07:44:51,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:44:51" (1/1) ... [2020-12-22 07:44:51,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:44:51,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:44:52,265 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c[65471,65484] [2020-12-22 07:44:52,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:44:52,316 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:44:52,462 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c[65471,65484] [2020-12-22 07:44:52,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:44:52,492 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:44:52,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:52 WrapperNode [2020-12-22 07:44:52,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:44:52,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:44:52,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:44:52,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:44:52,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:52" (1/1) ... [2020-12-22 07:44:52,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:52" (1/1) ... [2020-12-22 07:44:52,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:44:52,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:44:52,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:44:52,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:44:52,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:52" (1/1) ... [2020-12-22 07:44:52,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:52" (1/1) ... [2020-12-22 07:44:52,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:52" (1/1) ... [2020-12-22 07:44:52,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:52" (1/1) ... [2020-12-22 07:44:52,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:52" (1/1) ... [2020-12-22 07:44:52,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:52" (1/1) ... [2020-12-22 07:44:52,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:52" (1/1) ... [2020-12-22 07:44:52,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:44:52,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:44:52,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:44:52,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:44:52,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:52" (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 07:44:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:44:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:44:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:44:52,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:44:55,360 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:44:55,360 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2020-12-22 07:44:55,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:44:55 BoogieIcfgContainer [2020-12-22 07:44:55,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:44:55,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:44:55,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:44:55,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:44:55,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:44:51" (1/3) ... [2020-12-22 07:44:55,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691d49cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:44:55, skipping insertion in model container [2020-12-22 07:44:55,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:44:52" (2/3) ... [2020-12-22 07:44:55,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691d49cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:44:55, skipping insertion in model container [2020-12-22 07:44:55,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:44:55" (3/3) ... [2020-12-22 07:44:55,374 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c [2020-12-22 07:44:55,382 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:44:55,389 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:44:55,409 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:44:55,444 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:44:55,445 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:44:55,445 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:44:55,445 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:44:55,445 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:44:55,445 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:44:55,446 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:44:55,446 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:44:55,477 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states. [2020-12-22 07:44:55,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 07:44:55,504 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:44:55,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:44:55,506 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:44:55,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:44:55,513 INFO L82 PathProgramCache]: Analyzing trace with hash -388227635, now seen corresponding path program 1 times [2020-12-22 07:44:55,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:44:55,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71538878] [2020-12-22 07:44:55,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:44:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:44:56,179 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 07:44:56,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71538878] [2020-12-22 07:44:56,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:44:56,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:44:56,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203837848] [2020-12-22 07:44:56,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 07:44:56,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:44:56,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 07:44:56,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:44:56,214 INFO L87 Difference]: Start difference. First operand 736 states. Second operand 2 states. [2020-12-22 07:44:56,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:44:56,299 INFO L93 Difference]: Finished difference Result 922 states and 1680 transitions. [2020-12-22 07:44:56,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 07:44:56,301 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 153 [2020-12-22 07:44:56,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:44:56,340 INFO L225 Difference]: With dead ends: 922 [2020-12-22 07:44:56,340 INFO L226 Difference]: Without dead ends: 732 [2020-12-22 07:44:56,345 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 07:44:56,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2020-12-22 07:44:56,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2020-12-22 07:44:56,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-12-22 07:44:56,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1351 transitions. [2020-12-22 07:44:56,456 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1351 transitions. Word has length 153 [2020-12-22 07:44:56,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:44:56,457 INFO L481 AbstractCegarLoop]: Abstraction has 732 states and 1351 transitions. [2020-12-22 07:44:56,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 07:44:56,458 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1351 transitions. [2020-12-22 07:44:56,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 07:44:56,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:44:56,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:44:56,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:44:56,470 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:44:56,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:44:56,471 INFO L82 PathProgramCache]: Analyzing trace with hash -897700725, now seen corresponding path program 1 times [2020-12-22 07:44:56,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:44:56,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058757534] [2020-12-22 07:44:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:44:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:44:56,785 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 07:44:56,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058757534] [2020-12-22 07:44:56,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:44:56,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:44:56,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114547501] [2020-12-22 07:44:56,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:44:56,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:44:56,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:44:56,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:44:56,791 INFO L87 Difference]: Start difference. First operand 732 states and 1351 transitions. Second operand 5 states. [2020-12-22 07:44:56,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:44:56,962 INFO L93 Difference]: Finished difference Result 917 states and 1670 transitions. [2020-12-22 07:44:56,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:44:56,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-12-22 07:44:56,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:44:56,969 INFO L225 Difference]: With dead ends: 917 [2020-12-22 07:44:56,969 INFO L226 Difference]: Without dead ends: 732 [2020-12-22 07:44:56,972 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 07:44:56,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2020-12-22 07:44:57,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2020-12-22 07:44:57,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-12-22 07:44:57,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1286 transitions. [2020-12-22 07:44:57,008 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1286 transitions. Word has length 153 [2020-12-22 07:44:57,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:44:57,009 INFO L481 AbstractCegarLoop]: Abstraction has 732 states and 1286 transitions. [2020-12-22 07:44:57,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:44:57,009 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1286 transitions. [2020-12-22 07:44:57,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-12-22 07:44:57,017 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:44:57,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:44:57,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:44:57,018 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:44:57,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:44:57,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1598055145, now seen corresponding path program 1 times [2020-12-22 07:44:57,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:44:57,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454279316] [2020-12-22 07:44:57,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:44:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:44:57,403 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 07:44:57,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454279316] [2020-12-22 07:44:57,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:44:57,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:44:57,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842404649] [2020-12-22 07:44:57,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:44:57,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:44:57,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:44:57,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:44:57,408 INFO L87 Difference]: Start difference. First operand 732 states and 1286 transitions. Second operand 3 states. [2020-12-22 07:44:57,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:44:57,520 INFO L93 Difference]: Finished difference Result 1080 states and 1890 transitions. [2020-12-22 07:44:57,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:44:57,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-12-22 07:44:57,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:44:57,534 INFO L225 Difference]: With dead ends: 1080 [2020-12-22 07:44:57,535 INFO L226 Difference]: Without dead ends: 899 [2020-12-22 07:44:57,541 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 07:44:57,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2020-12-22 07:44:57,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 897. [2020-12-22 07:44:57,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-12-22 07:44:57,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1569 transitions. [2020-12-22 07:44:57,604 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1569 transitions. Word has length 217 [2020-12-22 07:44:57,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:44:57,614 INFO L481 AbstractCegarLoop]: Abstraction has 897 states and 1569 transitions. [2020-12-22 07:44:57,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:44:57,614 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1569 transitions. [2020-12-22 07:44:57,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-12-22 07:44:57,628 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:44:57,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:44:57,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:44:57,630 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:44:57,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:44:57,632 INFO L82 PathProgramCache]: Analyzing trace with hash 741252945, now seen corresponding path program 1 times [2020-12-22 07:44:57,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:44:57,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421173570] [2020-12-22 07:44:57,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:44:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:44:58,003 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 07:44:58,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421173570] [2020-12-22 07:44:58,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:44:58,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:44:58,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790465088] [2020-12-22 07:44:58,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:44:58,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:44:58,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:44:58,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:44:58,012 INFO L87 Difference]: Start difference. First operand 897 states and 1569 transitions. Second operand 3 states. [2020-12-22 07:44:58,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:44:58,074 INFO L93 Difference]: Finished difference Result 1565 states and 2721 transitions. [2020-12-22 07:44:58,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:44:58,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2020-12-22 07:44:58,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:44:58,086 INFO L225 Difference]: With dead ends: 1565 [2020-12-22 07:44:58,086 INFO L226 Difference]: Without dead ends: 1219 [2020-12-22 07:44:58,088 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 07:44:58,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2020-12-22 07:44:58,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1217. [2020-12-22 07:44:58,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2020-12-22 07:44:58,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 2120 transitions. [2020-12-22 07:44:58,139 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 2120 transitions. Word has length 221 [2020-12-22 07:44:58,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:44:58,140 INFO L481 AbstractCegarLoop]: Abstraction has 1217 states and 2120 transitions. [2020-12-22 07:44:58,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:44:58,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 2120 transitions. [2020-12-22 07:44:58,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-22 07:44:58,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:44:58,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:44:58,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:44:58,147 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:44:58,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:44:58,148 INFO L82 PathProgramCache]: Analyzing trace with hash -674300039, now seen corresponding path program 1 times [2020-12-22 07:44:58,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:44:58,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331875077] [2020-12-22 07:44:58,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:44:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:44:58,403 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 07:44:58,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331875077] [2020-12-22 07:44:58,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:44:58,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:44:58,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716772361] [2020-12-22 07:44:58,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:44:58,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:44:58,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:44:58,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:44:58,407 INFO L87 Difference]: Start difference. First operand 1217 states and 2120 transitions. Second operand 3 states. [2020-12-22 07:44:58,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:44:58,467 INFO L93 Difference]: Finished difference Result 2501 states and 4330 transitions. [2020-12-22 07:44:58,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:44:58,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2020-12-22 07:44:58,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:44:58,484 INFO L225 Difference]: With dead ends: 2501 [2020-12-22 07:44:58,485 INFO L226 Difference]: Without dead ends: 1835 [2020-12-22 07:44:58,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:44:58,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2020-12-22 07:44:58,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1833. [2020-12-22 07:44:58,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1833 states. [2020-12-22 07:44:58,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 3176 transitions. [2020-12-22 07:44:58,572 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 3176 transitions. Word has length 225 [2020-12-22 07:44:58,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:44:58,573 INFO L481 AbstractCegarLoop]: Abstraction has 1833 states and 3176 transitions. [2020-12-22 07:44:58,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:44:58,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 3176 transitions. [2020-12-22 07:44:58,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-12-22 07:44:58,584 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:44:58,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:44:58,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:44:58,585 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:44:58,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:44:58,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1433109345, now seen corresponding path program 1 times [2020-12-22 07:44:58,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:44:58,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362560344] [2020-12-22 07:44:58,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:44:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:44:58,988 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 07:44:58,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362560344] [2020-12-22 07:44:58,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:44:58,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:44:58,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944141755] [2020-12-22 07:44:58,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:44:58,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:44:58,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:44:58,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:44:58,994 INFO L87 Difference]: Start difference. First operand 1833 states and 3176 transitions. Second operand 3 states. [2020-12-22 07:44:59,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:44:59,102 INFO L93 Difference]: Finished difference Result 4301 states and 7410 transitions. [2020-12-22 07:44:59,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:44:59,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2020-12-22 07:44:59,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:44:59,126 INFO L225 Difference]: With dead ends: 4301 [2020-12-22 07:44:59,127 INFO L226 Difference]: Without dead ends: 3019 [2020-12-22 07:44:59,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:44:59,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3019 states. [2020-12-22 07:44:59,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3019 to 3017. [2020-12-22 07:44:59,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3017 states. [2020-12-22 07:44:59,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 5196 transitions. [2020-12-22 07:44:59,254 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 5196 transitions. Word has length 229 [2020-12-22 07:44:59,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:44:59,255 INFO L481 AbstractCegarLoop]: Abstraction has 3017 states and 5196 transitions. [2020-12-22 07:44:59,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:44:59,256 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 5196 transitions. [2020-12-22 07:44:59,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-12-22 07:44:59,263 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:44:59,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:44:59,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:44:59,264 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:44:59,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:44:59,270 INFO L82 PathProgramCache]: Analyzing trace with hash 792603401, now seen corresponding path program 1 times [2020-12-22 07:44:59,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:44:59,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948859560] [2020-12-22 07:44:59,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:44:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:44:59,555 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 07:44:59,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948859560] [2020-12-22 07:44:59,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:44:59,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:44:59,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032646974] [2020-12-22 07:44:59,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:44:59,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:44:59,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:44:59,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:44:59,572 INFO L87 Difference]: Start difference. First operand 3017 states and 5196 transitions. Second operand 3 states. [2020-12-22 07:44:59,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:44:59,685 INFO L93 Difference]: Finished difference Result 7757 states and 13294 transitions. [2020-12-22 07:44:59,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:44:59,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2020-12-22 07:44:59,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:44:59,716 INFO L225 Difference]: With dead ends: 7757 [2020-12-22 07:44:59,717 INFO L226 Difference]: Without dead ends: 5291 [2020-12-22 07:44:59,727 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 07:44:59,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5291 states. [2020-12-22 07:44:59,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5291 to 5289. [2020-12-22 07:44:59,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5289 states. [2020-12-22 07:44:59,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5289 states to 5289 states and 9052 transitions. [2020-12-22 07:44:59,890 INFO L78 Accepts]: Start accepts. Automaton has 5289 states and 9052 transitions. Word has length 233 [2020-12-22 07:44:59,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:44:59,891 INFO L481 AbstractCegarLoop]: Abstraction has 5289 states and 9052 transitions. [2020-12-22 07:44:59,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:44:59,891 INFO L276 IsEmpty]: Start isEmpty. Operand 5289 states and 9052 transitions. [2020-12-22 07:44:59,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-12-22 07:44:59,898 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:44:59,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:44:59,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:44:59,899 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:44:59,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:44:59,900 INFO L82 PathProgramCache]: Analyzing trace with hash 108066417, now seen corresponding path program 1 times [2020-12-22 07:44:59,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:44:59,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082550669] [2020-12-22 07:44:59,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:44:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:00,292 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 07:45:00,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082550669] [2020-12-22 07:45:00,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:00,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:45:00,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61095264] [2020-12-22 07:45:00,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:45:00,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:00,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:45:00,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:45:00,296 INFO L87 Difference]: Start difference. First operand 5289 states and 9052 transitions. Second operand 7 states. [2020-12-22 07:45:01,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:01,266 INFO L93 Difference]: Finished difference Result 29643 states and 50837 transitions. [2020-12-22 07:45:01,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:45:01,267 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-12-22 07:45:01,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:01,378 INFO L225 Difference]: With dead ends: 29643 [2020-12-22 07:45:01,378 INFO L226 Difference]: Without dead ends: 24905 [2020-12-22 07:45:01,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-12-22 07:45:01,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24905 states. [2020-12-22 07:45:01,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24905 to 12197. [2020-12-22 07:45:01,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12197 states. [2020-12-22 07:45:01,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12197 states to 12197 states and 20884 transitions. [2020-12-22 07:45:01,997 INFO L78 Accepts]: Start accepts. Automaton has 12197 states and 20884 transitions. Word has length 237 [2020-12-22 07:45:01,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:01,998 INFO L481 AbstractCegarLoop]: Abstraction has 12197 states and 20884 transitions. [2020-12-22 07:45:01,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:45:01,998 INFO L276 IsEmpty]: Start isEmpty. Operand 12197 states and 20884 transitions. [2020-12-22 07:45:02,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-12-22 07:45:02,009 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:02,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:02,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:45:02,010 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:02,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:02,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1083679653, now seen corresponding path program 1 times [2020-12-22 07:45:02,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:02,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605066950] [2020-12-22 07:45:02,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:02,329 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 07:45:02,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605066950] [2020-12-22 07:45:02,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:02,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:45:02,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715663688] [2020-12-22 07:45:02,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:45:02,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:02,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:45:02,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:45:02,332 INFO L87 Difference]: Start difference. First operand 12197 states and 20884 transitions. Second operand 4 states. [2020-12-22 07:45:02,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:02,725 INFO L93 Difference]: Finished difference Result 28676 states and 49121 transitions. [2020-12-22 07:45:02,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:45:02,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 238 [2020-12-22 07:45:02,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:02,776 INFO L225 Difference]: With dead ends: 28676 [2020-12-22 07:45:02,777 INFO L226 Difference]: Without dead ends: 17030 [2020-12-22 07:45:02,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 07:45:02,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17030 states. [2020-12-22 07:45:03,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17030 to 16995. [2020-12-22 07:45:03,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16995 states. [2020-12-22 07:45:03,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16995 states to 16995 states and 29082 transitions. [2020-12-22 07:45:03,410 INFO L78 Accepts]: Start accepts. Automaton has 16995 states and 29082 transitions. Word has length 238 [2020-12-22 07:45:03,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:03,410 INFO L481 AbstractCegarLoop]: Abstraction has 16995 states and 29082 transitions. [2020-12-22 07:45:03,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:45:03,411 INFO L276 IsEmpty]: Start isEmpty. Operand 16995 states and 29082 transitions. [2020-12-22 07:45:03,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 07:45:03,425 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:03,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:03,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:45:03,426 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:03,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:03,427 INFO L82 PathProgramCache]: Analyzing trace with hash -584977657, now seen corresponding path program 1 times [2020-12-22 07:45:03,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:03,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449210228] [2020-12-22 07:45:03,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:03,744 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 07:45:03,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449210228] [2020-12-22 07:45:03,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:03,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:03,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249994398] [2020-12-22 07:45:03,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:03,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:03,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:03,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:03,747 INFO L87 Difference]: Start difference. First operand 16995 states and 29082 transitions. Second operand 3 states. [2020-12-22 07:45:04,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:04,326 INFO L93 Difference]: Finished difference Result 38906 states and 66693 transitions. [2020-12-22 07:45:04,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:04,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-12-22 07:45:04,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:04,399 INFO L225 Difference]: With dead ends: 38906 [2020-12-22 07:45:04,400 INFO L226 Difference]: Without dead ends: 26797 [2020-12-22 07:45:04,430 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 07:45:04,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26797 states. [2020-12-22 07:45:05,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26797 to 26795. [2020-12-22 07:45:05,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26795 states. [2020-12-22 07:45:05,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26795 states to 26795 states and 45773 transitions. [2020-12-22 07:45:05,371 INFO L78 Accepts]: Start accepts. Automaton has 26795 states and 45773 transitions. Word has length 239 [2020-12-22 07:45:05,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:05,372 INFO L481 AbstractCegarLoop]: Abstraction has 26795 states and 45773 transitions. [2020-12-22 07:45:05,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:05,372 INFO L276 IsEmpty]: Start isEmpty. Operand 26795 states and 45773 transitions. [2020-12-22 07:45:05,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 07:45:05,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:05,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:05,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:45:05,380 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:05,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:05,380 INFO L82 PathProgramCache]: Analyzing trace with hash -259310295, now seen corresponding path program 1 times [2020-12-22 07:45:05,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:05,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254622748] [2020-12-22 07:45:05,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:05,698 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 07:45:05,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254622748] [2020-12-22 07:45:05,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:05,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:05,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158555065] [2020-12-22 07:45:05,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:05,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:05,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:05,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:05,703 INFO L87 Difference]: Start difference. First operand 26795 states and 45773 transitions. Second operand 3 states. [2020-12-22 07:45:06,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:06,460 INFO L93 Difference]: Finished difference Result 51907 states and 88688 transitions. [2020-12-22 07:45:06,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:06,461 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-12-22 07:45:06,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:06,555 INFO L225 Difference]: With dead ends: 51907 [2020-12-22 07:45:06,555 INFO L226 Difference]: Without dead ends: 37921 [2020-12-22 07:45:06,579 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 07:45:06,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37921 states. [2020-12-22 07:45:07,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37921 to 37919. [2020-12-22 07:45:07,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37919 states. [2020-12-22 07:45:08,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37919 states to 37919 states and 64605 transitions. [2020-12-22 07:45:08,001 INFO L78 Accepts]: Start accepts. Automaton has 37919 states and 64605 transitions. Word has length 239 [2020-12-22 07:45:08,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:08,002 INFO L481 AbstractCegarLoop]: Abstraction has 37919 states and 64605 transitions. [2020-12-22 07:45:08,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:08,002 INFO L276 IsEmpty]: Start isEmpty. Operand 37919 states and 64605 transitions. [2020-12-22 07:45:08,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 07:45:08,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:08,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:08,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:45:08,008 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:08,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:08,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1955219721, now seen corresponding path program 1 times [2020-12-22 07:45:08,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:08,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144588109] [2020-12-22 07:45:08,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:08,295 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 07:45:08,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144588109] [2020-12-22 07:45:08,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:08,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:08,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050395798] [2020-12-22 07:45:08,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:08,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:08,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:08,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:08,298 INFO L87 Difference]: Start difference. First operand 37919 states and 64605 transitions. Second operand 3 states. [2020-12-22 07:45:09,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:09,338 INFO L93 Difference]: Finished difference Result 73271 states and 124880 transitions. [2020-12-22 07:45:09,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:09,339 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-12-22 07:45:09,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:09,515 INFO L225 Difference]: With dead ends: 73271 [2020-12-22 07:45:09,515 INFO L226 Difference]: Without dead ends: 53445 [2020-12-22 07:45:09,565 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 07:45:09,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53445 states. [2020-12-22 07:45:11,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53445 to 53443. [2020-12-22 07:45:11,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53443 states. [2020-12-22 07:45:11,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53443 states to 53443 states and 90797 transitions. [2020-12-22 07:45:11,598 INFO L78 Accepts]: Start accepts. Automaton has 53443 states and 90797 transitions. Word has length 239 [2020-12-22 07:45:11,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:11,599 INFO L481 AbstractCegarLoop]: Abstraction has 53443 states and 90797 transitions. [2020-12-22 07:45:11,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:11,599 INFO L276 IsEmpty]: Start isEmpty. Operand 53443 states and 90797 transitions. [2020-12-22 07:45:11,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 07:45:11,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:11,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:11,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:45:11,610 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:11,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:11,611 INFO L82 PathProgramCache]: Analyzing trace with hash 583218409, now seen corresponding path program 1 times [2020-12-22 07:45:11,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:11,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661855663] [2020-12-22 07:45:11,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:11,857 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 07:45:11,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661855663] [2020-12-22 07:45:11,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:11,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:11,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030524646] [2020-12-22 07:45:11,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:11,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:11,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:11,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:11,860 INFO L87 Difference]: Start difference. First operand 53443 states and 90797 transitions. Second operand 3 states. [2020-12-22 07:45:13,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:13,129 INFO L93 Difference]: Finished difference Result 103003 states and 175072 transitions. [2020-12-22 07:45:13,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:13,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-12-22 07:45:13,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:13,450 INFO L225 Difference]: With dead ends: 103003 [2020-12-22 07:45:13,451 INFO L226 Difference]: Without dead ends: 74993 [2020-12-22 07:45:13,523 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 07:45:13,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74993 states. [2020-12-22 07:45:15,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74993 to 74991. [2020-12-22 07:45:15,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74991 states. [2020-12-22 07:45:16,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74991 states to 74991 states and 127009 transitions. [2020-12-22 07:45:16,017 INFO L78 Accepts]: Start accepts. Automaton has 74991 states and 127009 transitions. Word has length 239 [2020-12-22 07:45:16,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:16,018 INFO L481 AbstractCegarLoop]: Abstraction has 74991 states and 127009 transitions. [2020-12-22 07:45:16,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:16,018 INFO L276 IsEmpty]: Start isEmpty. Operand 74991 states and 127009 transitions. [2020-12-22 07:45:16,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 07:45:16,022 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:16,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:16,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:45:16,023 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:16,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:16,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1125515465, now seen corresponding path program 1 times [2020-12-22 07:45:16,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:16,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88295343] [2020-12-22 07:45:16,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:16,516 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 07:45:16,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88295343] [2020-12-22 07:45:16,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:16,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:45:16,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738660475] [2020-12-22 07:45:16,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:45:16,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:16,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:45:16,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:45:16,519 INFO L87 Difference]: Start difference. First operand 74991 states and 127009 transitions. Second operand 3 states. [2020-12-22 07:45:18,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:18,088 INFO L93 Difference]: Finished difference Result 144135 states and 244224 transitions. [2020-12-22 07:45:18,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:45:18,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-12-22 07:45:18,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:18,343 INFO L225 Difference]: With dead ends: 144135 [2020-12-22 07:45:18,343 INFO L226 Difference]: Without dead ends: 104713 [2020-12-22 07:45:18,714 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 07:45:18,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104713 states. [2020-12-22 07:45:20,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104713 to 104711. [2020-12-22 07:45:20,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104711 states. [2020-12-22 07:45:21,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104711 states to 104711 states and 176721 transitions. [2020-12-22 07:45:21,374 INFO L78 Accepts]: Start accepts. Automaton has 104711 states and 176721 transitions. Word has length 239 [2020-12-22 07:45:21,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:21,375 INFO L481 AbstractCegarLoop]: Abstraction has 104711 states and 176721 transitions. [2020-12-22 07:45:21,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:45:21,375 INFO L276 IsEmpty]: Start isEmpty. Operand 104711 states and 176721 transitions. [2020-12-22 07:45:21,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 07:45:21,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:21,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:21,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:45:21,380 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:21,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:21,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1431923240, now seen corresponding path program 1 times [2020-12-22 07:45:21,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:21,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138502316] [2020-12-22 07:45:21,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:21,579 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 07:45:21,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138502316] [2020-12-22 07:45:21,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:21,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:45:21,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501869273] [2020-12-22 07:45:21,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:45:21,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:21,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:45:21,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:45:21,582 INFO L87 Difference]: Start difference. First operand 104711 states and 176721 transitions. Second operand 4 states. [2020-12-22 07:45:25,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:25,208 INFO L93 Difference]: Finished difference Result 345911 states and 584173 transitions. [2020-12-22 07:45:25,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:45:25,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 239 [2020-12-22 07:45:25,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:25,735 INFO L225 Difference]: With dead ends: 345911 [2020-12-22 07:45:25,736 INFO L226 Difference]: Without dead ends: 241833 [2020-12-22 07:45:25,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 07:45:26,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241833 states. [2020-12-22 07:45:30,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241833 to 172390. [2020-12-22 07:45:30,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172390 states. [2020-12-22 07:45:30,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172390 states to 172390 states and 290100 transitions. [2020-12-22 07:45:30,972 INFO L78 Accepts]: Start accepts. Automaton has 172390 states and 290100 transitions. Word has length 239 [2020-12-22 07:45:30,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:30,972 INFO L481 AbstractCegarLoop]: Abstraction has 172390 states and 290100 transitions. [2020-12-22 07:45:30,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:45:30,973 INFO L276 IsEmpty]: Start isEmpty. Operand 172390 states and 290100 transitions. [2020-12-22 07:45:30,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-12-22 07:45:30,974 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:30,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:30,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:45:30,975 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:30,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:30,975 INFO L82 PathProgramCache]: Analyzing trace with hash -488423108, now seen corresponding path program 1 times [2020-12-22 07:45:30,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:30,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138543274] [2020-12-22 07:45:30,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:31,203 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 07:45:31,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138543274] [2020-12-22 07:45:31,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:31,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:45:31,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067876519] [2020-12-22 07:45:31,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:45:31,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:31,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:45:31,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:45:31,209 INFO L87 Difference]: Start difference. First operand 172390 states and 290100 transitions. Second operand 4 states. [2020-12-22 07:45:37,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:37,193 INFO L93 Difference]: Finished difference Result 569959 states and 959793 transitions. [2020-12-22 07:45:37,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:45:37,194 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-12-22 07:45:37,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:38,365 INFO L225 Difference]: With dead ends: 569959 [2020-12-22 07:45:38,366 INFO L226 Difference]: Without dead ends: 398202 [2020-12-22 07:45:38,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 07:45:38,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398202 states. [2020-12-22 07:45:45,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398202 to 283121. [2020-12-22 07:45:45,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283121 states. [2020-12-22 07:45:46,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283121 states to 283121 states and 475063 transitions. [2020-12-22 07:45:46,802 INFO L78 Accepts]: Start accepts. Automaton has 283121 states and 475063 transitions. Word has length 240 [2020-12-22 07:45:46,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:45:46,803 INFO L481 AbstractCegarLoop]: Abstraction has 283121 states and 475063 transitions. [2020-12-22 07:45:46,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:45:46,805 INFO L276 IsEmpty]: Start isEmpty. Operand 283121 states and 475063 transitions. [2020-12-22 07:45:46,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-22 07:45:46,811 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:45:46,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:46,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:45:46,813 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:45:46,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:45:46,813 INFO L82 PathProgramCache]: Analyzing trace with hash 279386591, now seen corresponding path program 1 times [2020-12-22 07:45:46,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:45:46,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638345924] [2020-12-22 07:45:46,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:45:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:45:47,102 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 07:45:47,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638345924] [2020-12-22 07:45:47,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:45:47,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:45:47,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898526265] [2020-12-22 07:45:47,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:45:47,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:45:47,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:45:47,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:45:47,106 INFO L87 Difference]: Start difference. First operand 283121 states and 475063 transitions. Second operand 4 states. [2020-12-22 07:45:57,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:45:57,816 INFO L93 Difference]: Finished difference Result 935615 states and 1571029 transitions. [2020-12-22 07:45:57,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:45:57,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2020-12-22 07:45:57,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:45:59,675 INFO L225 Difference]: With dead ends: 935615 [2020-12-22 07:45:59,675 INFO L226 Difference]: Without dead ends: 653127 [2020-12-22 07:46:00,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 07:46:00,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653127 states. [2020-12-22 07:46:15,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653127 to 462428. [2020-12-22 07:46:15,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462428 states. [2020-12-22 07:46:17,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462428 states to 462428 states and 773710 transitions. [2020-12-22 07:46:17,593 INFO L78 Accepts]: Start accepts. Automaton has 462428 states and 773710 transitions. Word has length 241 [2020-12-22 07:46:17,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:46:17,599 INFO L481 AbstractCegarLoop]: Abstraction has 462428 states and 773710 transitions. [2020-12-22 07:46:17,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:46:17,599 INFO L276 IsEmpty]: Start isEmpty. Operand 462428 states and 773710 transitions. [2020-12-22 07:46:17,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-12-22 07:46:17,637 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:46:17,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:17,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:46:17,638 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:46:17,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:46:17,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1519312173, now seen corresponding path program 1 times [2020-12-22 07:46:17,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:46:17,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885026442] [2020-12-22 07:46:17,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:46:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:46:17,956 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 07:46:17,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885026442] [2020-12-22 07:46:17,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:46:17,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:46:17,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898947039] [2020-12-22 07:46:17,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:46:17,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:46:17,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:46:17,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:46:17,962 INFO L87 Difference]: Start difference. First operand 462428 states and 773710 transitions. Second operand 4 states. [2020-12-22 07:46:36,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:46:36,548 INFO L93 Difference]: Finished difference Result 1496619 states and 2506113 transitions. [2020-12-22 07:46:36,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:46:36,548 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 242 [2020-12-22 07:46:36,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:46:39,611 INFO L225 Difference]: With dead ends: 1496619 [2020-12-22 07:46:39,611 INFO L226 Difference]: Without dead ends: 1034824 [2020-12-22 07:46:40,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:46:41,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034824 states. [2020-12-22 07:47:08,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034824 to 747259. [2020-12-22 07:47:08,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747259 states. [2020-12-22 07:47:12,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747259 states to 747259 states and 1246781 transitions. [2020-12-22 07:47:12,021 INFO L78 Accepts]: Start accepts. Automaton has 747259 states and 1246781 transitions. Word has length 242 [2020-12-22 07:47:12,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:47:12,022 INFO L481 AbstractCegarLoop]: Abstraction has 747259 states and 1246781 transitions. [2020-12-22 07:47:12,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:47:12,022 INFO L276 IsEmpty]: Start isEmpty. Operand 747259 states and 1246781 transitions. [2020-12-22 07:47:12,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-12-22 07:47:12,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:47:12,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:12,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 07:47:12,042 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:47:12,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:47:12,044 INFO L82 PathProgramCache]: Analyzing trace with hash -2074853333, now seen corresponding path program 1 times [2020-12-22 07:47:12,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:47:12,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047861442] [2020-12-22 07:47:12,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:47:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:47:13,003 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 07:47:13,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047861442] [2020-12-22 07:47:13,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:47:13,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:47:13,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805339014] [2020-12-22 07:47:13,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:47:13,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:47:13,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:47:13,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:47:13,009 INFO L87 Difference]: Start difference. First operand 747259 states and 1246781 transitions. Second operand 7 states. [2020-12-22 07:47:35,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:47:35,750 INFO L93 Difference]: Finished difference Result 1493889 states and 2492463 transitions. [2020-12-22 07:47:35,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:47:35,750 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-12-22 07:47:35,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:47:37,845 INFO L225 Difference]: With dead ends: 1493889 [2020-12-22 07:47:37,845 INFO L226 Difference]: Without dead ends: 747263 [2020-12-22 07:47:38,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:47:39,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747263 states.