/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:34:38,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:34:38,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:34:38,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:34:38,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:34:38,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:34:38,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:34:38,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:34:38,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:34:38,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:34:38,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:34:38,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:34:38,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:34:38,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:34:38,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:34:38,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:34:38,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:34:38,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:34:38,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:34:38,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:34:38,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:34:38,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:34:38,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:34:38,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:34:38,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:34:38,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:34:38,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:34:38,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:34:38,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:34:38,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:34:38,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:34:38,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:34:38,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:34:38,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:34:38,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:34:38,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:34:38,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:34:38,305 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:34:38,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:34:38,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:34:38,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:34:38,311 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:34:38,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:34:38,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:34:38,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:34:38,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:34:38,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:34:38,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:34:38,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:34:38,315 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:34:38,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:34:38,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:34:38,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:34:38,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:34:38,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:34:38,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:34:38,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:34:38,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:34:38,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:34:38,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:34:38,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:34:38,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:34:38,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:34:38,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:34:38,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:34:38,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:34:38,790 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:34:38,791 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:34:38,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:34:38,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56a46b47b/58543ce45f5949f081341f0bf4f71c48/FLAG1dfa8cbdf [2020-12-22 08:34:39,601 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:34:39,601 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:34:39,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56a46b47b/58543ce45f5949f081341f0bf4f71c48/FLAG1dfa8cbdf [2020-12-22 08:34:39,919 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56a46b47b/58543ce45f5949f081341f0bf4f71c48 [2020-12-22 08:34:39,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:34:39,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:34:39,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:34:39,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:34:39,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:34:39,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:34:39" (1/1) ... [2020-12-22 08:34:39,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ab34548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:39, skipping insertion in model container [2020-12-22 08:34:39,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:34:39" (1/1) ... [2020-12-22 08:34:39,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:34:40,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:34:40,242 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6997,7010] [2020-12-22 08:34:40,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:34:40,341 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:34:40,402 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6997,7010] [2020-12-22 08:34:40,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:34:40,472 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:34:40,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:40 WrapperNode [2020-12-22 08:34:40,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:34:40,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:34:40,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:34:40,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:34:40,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:40" (1/1) ... [2020-12-22 08:34:40,498 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:40" (1/1) ... [2020-12-22 08:34:40,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:34:40,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:34:40,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:34:40,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:34:40,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:40" (1/1) ... [2020-12-22 08:34:40,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:40" (1/1) ... [2020-12-22 08:34:40,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:40" (1/1) ... [2020-12-22 08:34:40,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:40" (1/1) ... [2020-12-22 08:34:40,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:40" (1/1) ... [2020-12-22 08:34:40,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:40" (1/1) ... [2020-12-22 08:34:40,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:40" (1/1) ... [2020-12-22 08:34:40,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:34:40,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:34:40,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:34:40,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:34:40,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:34:40,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:34:40,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:34:40,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:34:40,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:34:41,661 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:34:41,662 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:34:41,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:34:41 BoogieIcfgContainer [2020-12-22 08:34:41,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:34:41,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:34:41,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:34:41,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:34:41,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:34:39" (1/3) ... [2020-12-22 08:34:41,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51289dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:34:41, skipping insertion in model container [2020-12-22 08:34:41,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:34:40" (2/3) ... [2020-12-22 08:34:41,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51289dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:34:41, skipping insertion in model container [2020-12-22 08:34:41,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:34:41" (3/3) ... [2020-12-22 08:34:41,673 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:34:41,680 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:34:41,685 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:34:41,704 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:34:41,732 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:34:41,733 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:34:41,733 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:34:41,733 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:34:41,733 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:34:41,734 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:34:41,734 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:34:41,734 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:34:41,754 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-12-22 08:34:41,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 08:34:41,767 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:41,768 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] [2020-12-22 08:34:41,768 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:41,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:41,775 INFO L82 PathProgramCache]: Analyzing trace with hash -539705947, now seen corresponding path program 1 times [2020-12-22 08:34:41,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:41,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349384298] [2020-12-22 08:34:41,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:34:42,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349384298] [2020-12-22 08:34:42,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:42,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:34:42,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276833003] [2020-12-22 08:34:42,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:34:42,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:42,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:34:42,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:34:42,303 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-12-22 08:34:42,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:42,448 INFO L93 Difference]: Finished difference Result 376 states and 609 transitions. [2020-12-22 08:34:42,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:34:42,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 08:34:42,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:42,480 INFO L225 Difference]: With dead ends: 376 [2020-12-22 08:34:42,480 INFO L226 Difference]: Without dead ends: 254 [2020-12-22 08:34:42,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:34:42,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-12-22 08:34:42,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 252. [2020-12-22 08:34:42,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-12-22 08:34:42,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 376 transitions. [2020-12-22 08:34:42,562 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 376 transitions. Word has length 73 [2020-12-22 08:34:42,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:42,565 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 376 transitions. [2020-12-22 08:34:42,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:34:42,565 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 376 transitions. [2020-12-22 08:34:42,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 08:34:42,571 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:42,571 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] [2020-12-22 08:34:42,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:34:42,572 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:42,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:42,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1913065188, now seen corresponding path program 1 times [2020-12-22 08:34:42,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:42,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245145115] [2020-12-22 08:34:42,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:42,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:34:42,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245145115] [2020-12-22 08:34:42,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:42,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:34:42,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609881633] [2020-12-22 08:34:42,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:34:42,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:42,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:34:42,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:34:42,753 INFO L87 Difference]: Start difference. First operand 252 states and 376 transitions. Second operand 3 states. [2020-12-22 08:34:42,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:42,824 INFO L93 Difference]: Finished difference Result 636 states and 988 transitions. [2020-12-22 08:34:42,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:34:42,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-22 08:34:42,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:42,833 INFO L225 Difference]: With dead ends: 636 [2020-12-22 08:34:42,833 INFO L226 Difference]: Without dead ends: 428 [2020-12-22 08:34:42,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:34:42,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-12-22 08:34:42,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 426. [2020-12-22 08:34:42,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-12-22 08:34:42,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 653 transitions. [2020-12-22 08:34:42,927 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 653 transitions. Word has length 74 [2020-12-22 08:34:42,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:42,928 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 653 transitions. [2020-12-22 08:34:42,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:34:42,928 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 653 transitions. [2020-12-22 08:34:42,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 08:34:42,936 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:42,937 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] [2020-12-22 08:34:42,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:34:42,937 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:42,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:42,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1816530126, now seen corresponding path program 1 times [2020-12-22 08:34:42,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:42,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221197545] [2020-12-22 08:34:42,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:43,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:34:43,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221197545] [2020-12-22 08:34:43,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:43,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:34:43,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920291161] [2020-12-22 08:34:43,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:34:43,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:43,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:34:43,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:34:43,132 INFO L87 Difference]: Start difference. First operand 426 states and 653 transitions. Second operand 3 states. [2020-12-22 08:34:43,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:43,197 INFO L93 Difference]: Finished difference Result 1126 states and 1767 transitions. [2020-12-22 08:34:43,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:34:43,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-22 08:34:43,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:43,203 INFO L225 Difference]: With dead ends: 1126 [2020-12-22 08:34:43,203 INFO L226 Difference]: Without dead ends: 744 [2020-12-22 08:34:43,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:34:43,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2020-12-22 08:34:43,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 742. [2020-12-22 08:34:43,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742 states. [2020-12-22 08:34:43,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1153 transitions. [2020-12-22 08:34:43,277 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1153 transitions. Word has length 75 [2020-12-22 08:34:43,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:43,278 INFO L481 AbstractCegarLoop]: Abstraction has 742 states and 1153 transitions. [2020-12-22 08:34:43,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:34:43,278 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1153 transitions. [2020-12-22 08:34:43,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 08:34:43,281 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:43,281 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] [2020-12-22 08:34:43,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:34:43,282 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:43,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:43,282 INFO L82 PathProgramCache]: Analyzing trace with hash 2133086223, now seen corresponding path program 1 times [2020-12-22 08:34:43,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:43,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968499025] [2020-12-22 08:34:43,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:43,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:34:43,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968499025] [2020-12-22 08:34:43,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:43,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:34:43,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36716802] [2020-12-22 08:34:43,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:34:43,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:43,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:34:43,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:34:43,383 INFO L87 Difference]: Start difference. First operand 742 states and 1153 transitions. Second operand 3 states. [2020-12-22 08:34:43,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:43,462 INFO L93 Difference]: Finished difference Result 2010 states and 3163 transitions. [2020-12-22 08:34:43,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:34:43,463 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 08:34:43,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:43,471 INFO L225 Difference]: With dead ends: 2010 [2020-12-22 08:34:43,471 INFO L226 Difference]: Without dead ends: 1312 [2020-12-22 08:34:43,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:34:43,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2020-12-22 08:34:43,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1310. [2020-12-22 08:34:43,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1310 states. [2020-12-22 08:34:43,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2045 transitions. [2020-12-22 08:34:43,545 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2045 transitions. Word has length 76 [2020-12-22 08:34:43,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:43,546 INFO L481 AbstractCegarLoop]: Abstraction has 1310 states and 2045 transitions. [2020-12-22 08:34:43,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:34:43,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2045 transitions. [2020-12-22 08:34:43,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 08:34:43,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:43,548 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] [2020-12-22 08:34:43,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:34:43,548 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:43,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:43,549 INFO L82 PathProgramCache]: Analyzing trace with hash 19574795, now seen corresponding path program 1 times [2020-12-22 08:34:43,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:43,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471774518] [2020-12-22 08:34:43,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:43,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:34:43,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471774518] [2020-12-22 08:34:43,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:43,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:34:43,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078292086] [2020-12-22 08:34:43,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:34:43,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:43,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:34:43,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:34:43,626 INFO L87 Difference]: Start difference. First operand 1310 states and 2045 transitions. Second operand 3 states. [2020-12-22 08:34:43,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:43,768 INFO L93 Difference]: Finished difference Result 3586 states and 5631 transitions. [2020-12-22 08:34:43,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:34:43,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 08:34:43,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:43,782 INFO L225 Difference]: With dead ends: 3586 [2020-12-22 08:34:43,782 INFO L226 Difference]: Without dead ends: 2320 [2020-12-22 08:34:43,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:34:43,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2020-12-22 08:34:43,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2318. [2020-12-22 08:34:43,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2318 states. [2020-12-22 08:34:43,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 3613 transitions. [2020-12-22 08:34:43,919 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 3613 transitions. Word has length 77 [2020-12-22 08:34:43,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:43,921 INFO L481 AbstractCegarLoop]: Abstraction has 2318 states and 3613 transitions. [2020-12-22 08:34:43,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:34:43,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 3613 transitions. [2020-12-22 08:34:43,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:34:43,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:43,924 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] [2020-12-22 08:34:43,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:34:43,924 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:43,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:43,925 INFO L82 PathProgramCache]: Analyzing trace with hash 366454550, now seen corresponding path program 1 times [2020-12-22 08:34:43,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:43,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918346002] [2020-12-22 08:34:43,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:44,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:34:44,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918346002] [2020-12-22 08:34:44,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:44,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:34:44,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944196690] [2020-12-22 08:34:44,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:34:44,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:44,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:34:44,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:34:44,273 INFO L87 Difference]: Start difference. First operand 2318 states and 3613 transitions. Second operand 8 states. [2020-12-22 08:34:45,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:45,412 INFO L93 Difference]: Finished difference Result 14122 states and 21987 transitions. [2020-12-22 08:34:45,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:34:45,412 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-12-22 08:34:45,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:45,483 INFO L225 Difference]: With dead ends: 14122 [2020-12-22 08:34:45,483 INFO L226 Difference]: Without dead ends: 11848 [2020-12-22 08:34:45,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:34:45,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11848 states. [2020-12-22 08:34:46,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11848 to 11838. [2020-12-22 08:34:46,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11838 states. [2020-12-22 08:34:46,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11838 states to 11838 states and 18381 transitions. [2020-12-22 08:34:46,511 INFO L78 Accepts]: Start accepts. Automaton has 11838 states and 18381 transitions. Word has length 78 [2020-12-22 08:34:46,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:46,512 INFO L481 AbstractCegarLoop]: Abstraction has 11838 states and 18381 transitions. [2020-12-22 08:34:46,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:34:46,512 INFO L276 IsEmpty]: Start isEmpty. Operand 11838 states and 18381 transitions. [2020-12-22 08:34:46,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 08:34:46,514 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:46,514 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] [2020-12-22 08:34:46,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:34:46,514 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:46,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:46,516 INFO L82 PathProgramCache]: Analyzing trace with hash -252245181, now seen corresponding path program 1 times [2020-12-22 08:34:46,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:46,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931481715] [2020-12-22 08:34:46,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:46,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:34:46,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931481715] [2020-12-22 08:34:46,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:46,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:34:46,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793498844] [2020-12-22 08:34:46,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:34:46,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:46,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:34:46,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:34:46,610 INFO L87 Difference]: Start difference. First operand 11838 states and 18381 transitions. Second operand 3 states. [2020-12-22 08:34:48,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:48,051 INFO L93 Difference]: Finished difference Result 32930 states and 51023 transitions. [2020-12-22 08:34:48,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:34:48,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 08:34:48,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:48,131 INFO L225 Difference]: With dead ends: 32930 [2020-12-22 08:34:48,132 INFO L226 Difference]: Without dead ends: 21136 [2020-12-22 08:34:48,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:34:48,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21136 states. [2020-12-22 08:34:50,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21136 to 21134. [2020-12-22 08:34:50,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21134 states. [2020-12-22 08:34:50,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21134 states to 21134 states and 32493 transitions. [2020-12-22 08:34:50,090 INFO L78 Accepts]: Start accepts. Automaton has 21134 states and 32493 transitions. Word has length 80 [2020-12-22 08:34:50,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:50,091 INFO L481 AbstractCegarLoop]: Abstraction has 21134 states and 32493 transitions. [2020-12-22 08:34:50,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:34:50,091 INFO L276 IsEmpty]: Start isEmpty. Operand 21134 states and 32493 transitions. [2020-12-22 08:34:50,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 08:34:50,092 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:50,092 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] [2020-12-22 08:34:50,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:34:50,093 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:50,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:50,094 INFO L82 PathProgramCache]: Analyzing trace with hash 192381485, now seen corresponding path program 1 times [2020-12-22 08:34:50,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:50,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908324641] [2020-12-22 08:34:50,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:50,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:34:50,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908324641] [2020-12-22 08:34:50,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:50,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:34:50,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354336938] [2020-12-22 08:34:50,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:34:50,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:50,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:34:50,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:34:50,230 INFO L87 Difference]: Start difference. First operand 21134 states and 32493 transitions. Second operand 6 states. [2020-12-22 08:34:54,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:54,071 INFO L93 Difference]: Finished difference Result 83284 states and 127920 transitions. [2020-12-22 08:34:54,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:34:54,072 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-12-22 08:34:54,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:54,274 INFO L225 Difference]: With dead ends: 83284 [2020-12-22 08:34:54,274 INFO L226 Difference]: Without dead ends: 62194 [2020-12-22 08:34:54,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:34:54,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62194 states. [2020-12-22 08:34:58,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62194 to 62190. [2020-12-22 08:34:58,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62190 states. [2020-12-22 08:34:58,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62190 states to 62190 states and 95149 transitions. [2020-12-22 08:34:58,172 INFO L78 Accepts]: Start accepts. Automaton has 62190 states and 95149 transitions. Word has length 80 [2020-12-22 08:34:58,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:58,172 INFO L481 AbstractCegarLoop]: Abstraction has 62190 states and 95149 transitions. [2020-12-22 08:34:58,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:34:58,172 INFO L276 IsEmpty]: Start isEmpty. Operand 62190 states and 95149 transitions. [2020-12-22 08:34:58,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 08:34:58,173 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:58,174 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] [2020-12-22 08:34:58,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:34:58,174 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:58,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:58,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1809886376, now seen corresponding path program 1 times [2020-12-22 08:34:58,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:58,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42578098] [2020-12-22 08:34:58,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:58,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:34:58,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42578098] [2020-12-22 08:34:58,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:58,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:34:58,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392482485] [2020-12-22 08:34:58,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:34:58,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:58,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:34:58,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:34:58,344 INFO L87 Difference]: Start difference. First operand 62190 states and 95149 transitions. Second operand 8 states. [2020-12-22 08:35:12,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:12,203 INFO L93 Difference]: Finished difference Result 350332 states and 536692 transitions. [2020-12-22 08:35:12,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:35:12,204 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-12-22 08:35:12,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:13,315 INFO L225 Difference]: With dead ends: 350332 [2020-12-22 08:35:13,315 INFO L226 Difference]: Without dead ends: 288186 [2020-12-22 08:35:13,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:35:13,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288186 states. [2020-12-22 08:35:23,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288186 to 124334. [2020-12-22 08:35:23,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124334 states. [2020-12-22 08:35:23,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124334 states to 124334 states and 187949 transitions. [2020-12-22 08:35:23,461 INFO L78 Accepts]: Start accepts. Automaton has 124334 states and 187949 transitions. Word has length 80 [2020-12-22 08:35:23,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:23,461 INFO L481 AbstractCegarLoop]: Abstraction has 124334 states and 187949 transitions. [2020-12-22 08:35:23,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:35:23,462 INFO L276 IsEmpty]: Start isEmpty. Operand 124334 states and 187949 transitions. [2020-12-22 08:35:23,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:35:23,463 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:23,463 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] [2020-12-22 08:35:23,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:35:23,463 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:23,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:23,464 INFO L82 PathProgramCache]: Analyzing trace with hash 252446614, now seen corresponding path program 1 times [2020-12-22 08:35:23,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:23,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439551815] [2020-12-22 08:35:23,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:23,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:35:23,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439551815] [2020-12-22 08:35:23,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:23,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:35:23,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249506823] [2020-12-22 08:35:23,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:35:23,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:23,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:35:23,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:35:23,884 INFO L87 Difference]: Start difference. First operand 124334 states and 187949 transitions. Second operand 5 states. [2020-12-22 08:35:38,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:38,734 INFO L93 Difference]: Finished difference Result 253232 states and 380462 transitions. [2020-12-22 08:35:38,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:35:38,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-12-22 08:35:38,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:39,447 INFO L225 Difference]: With dead ends: 253232 [2020-12-22 08:35:39,447 INFO L226 Difference]: Without dead ends: 253230 [2020-12-22 08:35:39,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:35:39,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253230 states. [2020-12-22 08:35:49,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253230 to 128942. [2020-12-22 08:35:49,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128942 states. [2020-12-22 08:35:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128942 states to 128942 states and 192557 transitions. [2020-12-22 08:35:50,172 INFO L78 Accepts]: Start accepts. Automaton has 128942 states and 192557 transitions. Word has length 81 [2020-12-22 08:35:50,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:50,172 INFO L481 AbstractCegarLoop]: Abstraction has 128942 states and 192557 transitions. [2020-12-22 08:35:50,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:35:50,172 INFO L276 IsEmpty]: Start isEmpty. Operand 128942 states and 192557 transitions. [2020-12-22 08:35:50,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:35:50,174 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:50,174 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] [2020-12-22 08:35:50,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:35:50,174 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:50,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:50,175 INFO L82 PathProgramCache]: Analyzing trace with hash -753516424, now seen corresponding path program 1 times [2020-12-22 08:35:50,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:50,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496185379] [2020-12-22 08:35:50,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:50,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:35:50,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496185379] [2020-12-22 08:35:50,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:50,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:35:50,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431095904] [2020-12-22 08:35:50,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:35:50,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:50,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:35:50,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:35:50,259 INFO L87 Difference]: Start difference. First operand 128942 states and 192557 transitions. Second operand 3 states. [2020-12-22 08:36:03,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:03,991 INFO L93 Difference]: Finished difference Result 316804 states and 472881 transitions. [2020-12-22 08:36:03,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:36:03,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 08:36:03,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:04,333 INFO L225 Difference]: With dead ends: 316804 [2020-12-22 08:36:04,333 INFO L226 Difference]: Without dead ends: 187906 [2020-12-22 08:36:04,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:36:04,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187906 states. [2020-12-22 08:36:18,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187906 to 186848. [2020-12-22 08:36:18,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186848 states. [2020-12-22 08:36:18,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186848 states to 186848 states and 277199 transitions. [2020-12-22 08:36:18,844 INFO L78 Accepts]: Start accepts. Automaton has 186848 states and 277199 transitions. Word has length 82 [2020-12-22 08:36:18,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:18,844 INFO L481 AbstractCegarLoop]: Abstraction has 186848 states and 277199 transitions. [2020-12-22 08:36:18,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:36:18,845 INFO L276 IsEmpty]: Start isEmpty. Operand 186848 states and 277199 transitions. [2020-12-22 08:36:18,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 08:36:18,900 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:18,901 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:36:18,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:36:18,901 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:18,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:18,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1137103824, now seen corresponding path program 1 times [2020-12-22 08:36:18,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:18,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987657446] [2020-12-22 08:36:18,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 08:36:19,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987657446] [2020-12-22 08:36:19,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:19,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:36:19,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965748394] [2020-12-22 08:36:19,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:36:19,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:19,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:36:19,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:36:19,061 INFO L87 Difference]: Start difference. First operand 186848 states and 277199 transitions. Second operand 8 states. [2020-12-22 08:36:50,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:50,026 INFO L93 Difference]: Finished difference Result 494302 states and 739894 transitions. [2020-12-22 08:36:50,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:36:50,027 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-12-22 08:36:50,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:50,881 INFO L225 Difference]: With dead ends: 494302 [2020-12-22 08:36:50,881 INFO L226 Difference]: Without dead ends: 412460 [2020-12-22 08:36:51,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:36:51,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412460 states. [2020-12-22 08:37:14,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412460 to 262816. [2020-12-22 08:37:14,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262816 states. [2020-12-22 08:37:15,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262816 states to 262816 states and 389935 transitions. [2020-12-22 08:37:15,757 INFO L78 Accepts]: Start accepts. Automaton has 262816 states and 389935 transitions. Word has length 112 [2020-12-22 08:37:15,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:15,757 INFO L481 AbstractCegarLoop]: Abstraction has 262816 states and 389935 transitions. [2020-12-22 08:37:15,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:37:15,757 INFO L276 IsEmpty]: Start isEmpty. Operand 262816 states and 389935 transitions. [2020-12-22 08:37:15,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 08:37:15,805 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:15,806 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:37:15,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:37:15,806 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:15,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:15,807 INFO L82 PathProgramCache]: Analyzing trace with hash 2032826505, now seen corresponding path program 1 times [2020-12-22 08:37:15,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:15,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757331761] [2020-12-22 08:37:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:15,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757331761] [2020-12-22 08:37:15,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:15,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:37:15,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385206792] [2020-12-22 08:37:15,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:37:15,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:15,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:37:15,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:37:15,880 INFO L87 Difference]: Start difference. First operand 262816 states and 389935 transitions. Second operand 3 states.