/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_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:16:35,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:16:35,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:16:35,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 07:16:35,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 07:16:35,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 07:16:35,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 07:16:35,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 07:16:35,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 07:16:35,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 07:16:35,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 07:16:35,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 07:16:35,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:16:35,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:16:35,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:16:35,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:16:35,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:16:35,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:16:35,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:16:35,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:16:35,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:16:35,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:16:35,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:16:35,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:16:35,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:16:35,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:16:35,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:16:35,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:16:35,427 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:16:35,487 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:16:35,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:16:35,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:16:35,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:16:35,492 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:16:35,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:16:35,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:16:35,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:16:35,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:16:35,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:16:35,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:16:35,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:16:35,497 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:16:35,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:16:35,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:16:35,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:16:35,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:16:35,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:16:35,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:16:35,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:16:35,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:16:35,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:16:35,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:16:35,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:16:35,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:16:35,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:16:35,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:16:35,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:16:35,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:16:35,975 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:16:35,976 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:16:35,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2020-12-22 07:16:36,079 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57764623c/a81f5f4949564b86b1447d980e80f466/FLAG7d4572e93 [2020-12-22 07:16:36,942 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:16:36,943 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2020-12-22 07:16:36,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57764623c/a81f5f4949564b86b1447d980e80f466/FLAG7d4572e93 [2020-12-22 07:16:37,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57764623c/a81f5f4949564b86b1447d980e80f466 [2020-12-22 07:16:37,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:16:37,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:16:37,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:16:37,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:16:37,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:16:37,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:16:37" (1/1) ... [2020-12-22 07:16:37,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4d7315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:37, skipping insertion in model container [2020-12-22 07:16:37,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:16:37" (1/1) ... [2020-12-22 07:16:37,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:16:37,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:16:37,535 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_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c[14680,14693] [2020-12-22 07:16:37,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:16:37,556 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:16:37,630 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_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c[14680,14693] [2020-12-22 07:16:37,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:16:37,666 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:16:37,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:37 WrapperNode [2020-12-22 07:16:37,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:16:37,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:16:37,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:16:37,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:16:37,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:37" (1/1) ... [2020-12-22 07:16:37,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:37" (1/1) ... [2020-12-22 07:16:37,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:16:37,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:16:37,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:16:37,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:16:37,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:37" (1/1) ... [2020-12-22 07:16:37,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:37" (1/1) ... [2020-12-22 07:16:37,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:37" (1/1) ... [2020-12-22 07:16:37,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:37" (1/1) ... [2020-12-22 07:16:37,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:37" (1/1) ... [2020-12-22 07:16:37,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:37" (1/1) ... [2020-12-22 07:16:37,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:37" (1/1) ... [2020-12-22 07:16:37,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:16:37,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:16:37,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:16:37,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:16:37,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:37" (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 07:16:37,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:16:37,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:16:37,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:16:37,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:16:39,293 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:16:39,293 INFO L299 CfgBuilder]: Removed 123 assume(true) statements. [2020-12-22 07:16:39,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:16:39 BoogieIcfgContainer [2020-12-22 07:16:39,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:16:39,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:16:39,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:16:39,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:16:39,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:16:37" (1/3) ... [2020-12-22 07:16:39,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26210ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:16:39, skipping insertion in model container [2020-12-22 07:16:39,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:37" (2/3) ... [2020-12-22 07:16:39,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26210ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:16:39, skipping insertion in model container [2020-12-22 07:16:39,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:16:39" (3/3) ... [2020-12-22 07:16:39,306 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2020-12-22 07:16:39,314 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:16:39,320 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2020-12-22 07:16:39,341 INFO L253 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2020-12-22 07:16:39,374 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:16:39,374 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:16:39,375 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:16:39,375 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:16:39,375 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:16:39,375 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:16:39,375 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:16:39,376 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:16:39,404 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-12-22 07:16:39,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 07:16:39,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:39,413 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] [2020-12-22 07:16:39,414 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:39,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:39,421 INFO L82 PathProgramCache]: Analyzing trace with hash 349506240, now seen corresponding path program 1 times [2020-12-22 07:16:39,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:39,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038304228] [2020-12-22 07:16:39,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:39,745 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 07:16:39,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038304228] [2020-12-22 07:16:39,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:39,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:16:39,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071825357] [2020-12-22 07:16:39,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 07:16:39,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:39,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 07:16:39,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:16:39,786 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 2 states. [2020-12-22 07:16:39,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:39,859 INFO L93 Difference]: Finished difference Result 572 states and 896 transitions. [2020-12-22 07:16:39,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 07:16:39,861 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2020-12-22 07:16:39,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:39,878 INFO L225 Difference]: With dead ends: 572 [2020-12-22 07:16:39,878 INFO L226 Difference]: Without dead ends: 292 [2020-12-22 07:16:39,884 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 07:16:39,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-12-22 07:16:39,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2020-12-22 07:16:39,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-12-22 07:16:39,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 428 transitions. [2020-12-22 07:16:39,975 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 428 transitions. Word has length 33 [2020-12-22 07:16:39,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:39,976 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 428 transitions. [2020-12-22 07:16:39,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 07:16:39,976 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 428 transitions. [2020-12-22 07:16:39,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 07:16:39,979 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:39,979 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] [2020-12-22 07:16:39,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:16:39,981 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:39,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:39,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1047215368, now seen corresponding path program 1 times [2020-12-22 07:16:39,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:39,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221182078] [2020-12-22 07:16:39,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:40,158 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 07:16:40,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221182078] [2020-12-22 07:16:40,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:40,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:40,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792779489] [2020-12-22 07:16:40,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:40,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:40,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:40,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:40,163 INFO L87 Difference]: Start difference. First operand 292 states and 428 transitions. Second operand 4 states. [2020-12-22 07:16:40,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:40,262 INFO L93 Difference]: Finished difference Result 570 states and 830 transitions. [2020-12-22 07:16:40,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:16:40,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-12-22 07:16:40,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:40,270 INFO L225 Difference]: With dead ends: 570 [2020-12-22 07:16:40,271 INFO L226 Difference]: Without dead ends: 292 [2020-12-22 07:16:40,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 07:16:40,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-12-22 07:16:40,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2020-12-22 07:16:40,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-12-22 07:16:40,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 416 transitions. [2020-12-22 07:16:40,302 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 416 transitions. Word has length 33 [2020-12-22 07:16:40,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:40,302 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 416 transitions. [2020-12-22 07:16:40,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:40,303 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 416 transitions. [2020-12-22 07:16:40,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 07:16:40,306 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:40,306 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] [2020-12-22 07:16:40,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:16:40,307 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:40,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:40,308 INFO L82 PathProgramCache]: Analyzing trace with hash -600938825, now seen corresponding path program 1 times [2020-12-22 07:16:40,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:40,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187312670] [2020-12-22 07:16:40,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:40,518 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 07:16:40,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187312670] [2020-12-22 07:16:40,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:40,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:40,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127382077] [2020-12-22 07:16:40,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:40,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:40,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:40,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:40,528 INFO L87 Difference]: Start difference. First operand 292 states and 416 transitions. Second operand 3 states. [2020-12-22 07:16:40,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:40,615 INFO L93 Difference]: Finished difference Result 600 states and 864 transitions. [2020-12-22 07:16:40,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:40,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 07:16:40,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:40,621 INFO L225 Difference]: With dead ends: 600 [2020-12-22 07:16:40,622 INFO L226 Difference]: Without dead ends: 325 [2020-12-22 07:16:40,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 07:16:40,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-12-22 07:16:40,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 268. [2020-12-22 07:16:40,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-12-22 07:16:40,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 380 transitions. [2020-12-22 07:16:40,669 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 380 transitions. Word has length 44 [2020-12-22 07:16:40,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:40,669 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 380 transitions. [2020-12-22 07:16:40,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:40,670 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 380 transitions. [2020-12-22 07:16:40,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 07:16:40,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:40,675 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] [2020-12-22 07:16:40,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:16:40,676 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:40,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:40,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1585020226, now seen corresponding path program 1 times [2020-12-22 07:16:40,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:40,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215010294] [2020-12-22 07:16:40,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:40,867 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 07:16:40,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215010294] [2020-12-22 07:16:40,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:40,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:40,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863039454] [2020-12-22 07:16:40,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:40,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:40,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:40,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:40,874 INFO L87 Difference]: Start difference. First operand 268 states and 380 transitions. Second operand 3 states. [2020-12-22 07:16:40,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:40,939 INFO L93 Difference]: Finished difference Result 747 states and 1071 transitions. [2020-12-22 07:16:40,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:40,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-22 07:16:40,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:40,946 INFO L225 Difference]: With dead ends: 747 [2020-12-22 07:16:40,946 INFO L226 Difference]: Without dead ends: 496 [2020-12-22 07:16:40,948 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 07:16:40,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-12-22 07:16:40,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 303. [2020-12-22 07:16:40,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-12-22 07:16:40,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 432 transitions. [2020-12-22 07:16:40,989 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 432 transitions. Word has length 53 [2020-12-22 07:16:40,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:40,992 INFO L481 AbstractCegarLoop]: Abstraction has 303 states and 432 transitions. [2020-12-22 07:16:40,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:40,992 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 432 transitions. [2020-12-22 07:16:40,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 07:16:40,999 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:40,999 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] [2020-12-22 07:16:41,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:16:41,004 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:41,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:41,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1396202520, now seen corresponding path program 1 times [2020-12-22 07:16:41,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:41,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983615291] [2020-12-22 07:16:41,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:41,123 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 07:16:41,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983615291] [2020-12-22 07:16:41,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:41,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:41,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140340929] [2020-12-22 07:16:41,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:41,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:41,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:41,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:41,126 INFO L87 Difference]: Start difference. First operand 303 states and 432 transitions. Second operand 3 states. [2020-12-22 07:16:41,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:41,169 INFO L93 Difference]: Finished difference Result 831 states and 1196 transitions. [2020-12-22 07:16:41,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:41,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 07:16:41,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:41,174 INFO L225 Difference]: With dead ends: 831 [2020-12-22 07:16:41,174 INFO L226 Difference]: Without dead ends: 545 [2020-12-22 07:16:41,175 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 07:16:41,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-12-22 07:16:41,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 328. [2020-12-22 07:16:41,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-12-22 07:16:41,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 470 transitions. [2020-12-22 07:16:41,193 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 470 transitions. Word has length 54 [2020-12-22 07:16:41,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:41,194 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 470 transitions. [2020-12-22 07:16:41,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:41,194 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 470 transitions. [2020-12-22 07:16:41,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 07:16:41,195 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:41,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:41,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:16:41,196 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:41,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:41,197 INFO L82 PathProgramCache]: Analyzing trace with hash -716144150, now seen corresponding path program 1 times [2020-12-22 07:16:41,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:41,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381814701] [2020-12-22 07:16:41,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:41,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:41,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381814701] [2020-12-22 07:16:41,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:41,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:41,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409030767] [2020-12-22 07:16:41,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:16:41,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:41,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:16:41,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:41,300 INFO L87 Difference]: Start difference. First operand 328 states and 470 transitions. Second operand 5 states. [2020-12-22 07:16:41,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:41,550 INFO L93 Difference]: Finished difference Result 1020 states and 1473 transitions. [2020-12-22 07:16:41,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:16:41,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-12-22 07:16:41,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:41,555 INFO L225 Difference]: With dead ends: 1020 [2020-12-22 07:16:41,555 INFO L226 Difference]: Without dead ends: 709 [2020-12-22 07:16:41,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:16:41,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-12-22 07:16:41,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 426. [2020-12-22 07:16:41,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-12-22 07:16:41,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 607 transitions. [2020-12-22 07:16:41,579 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 607 transitions. Word has length 54 [2020-12-22 07:16:41,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:41,580 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 607 transitions. [2020-12-22 07:16:41,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:16:41,580 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 607 transitions. [2020-12-22 07:16:41,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 07:16:41,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:41,581 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] [2020-12-22 07:16:41,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:16:41,582 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:41,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:41,582 INFO L82 PathProgramCache]: Analyzing trace with hash 153208358, now seen corresponding path program 1 times [2020-12-22 07:16:41,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:41,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374634829] [2020-12-22 07:16:41,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:41,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:41,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374634829] [2020-12-22 07:16:41,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:41,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:41,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254110032] [2020-12-22 07:16:41,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:16:41,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:41,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:16:41,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:41,664 INFO L87 Difference]: Start difference. First operand 426 states and 607 transitions. Second operand 5 states. [2020-12-22 07:16:41,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:41,903 INFO L93 Difference]: Finished difference Result 1024 states and 1473 transitions. [2020-12-22 07:16:41,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:16:41,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-22 07:16:41,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:41,908 INFO L225 Difference]: With dead ends: 1024 [2020-12-22 07:16:41,908 INFO L226 Difference]: Without dead ends: 713 [2020-12-22 07:16:41,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:16:41,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-12-22 07:16:41,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 434. [2020-12-22 07:16:41,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-12-22 07:16:41,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 615 transitions. [2020-12-22 07:16:41,933 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 615 transitions. Word has length 55 [2020-12-22 07:16:41,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:41,933 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 615 transitions. [2020-12-22 07:16:41,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:16:41,933 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 615 transitions. [2020-12-22 07:16:41,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 07:16:41,934 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:41,934 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] [2020-12-22 07:16:41,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:16:41,935 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:41,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:41,936 INFO L82 PathProgramCache]: Analyzing trace with hash -748848364, now seen corresponding path program 1 times [2020-12-22 07:16:41,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:41,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033459645] [2020-12-22 07:16:41,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:42,015 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 07:16:42,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033459645] [2020-12-22 07:16:42,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:42,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:42,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760458221] [2020-12-22 07:16:42,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:42,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:42,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:42,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:42,018 INFO L87 Difference]: Start difference. First operand 434 states and 615 transitions. Second operand 4 states. [2020-12-22 07:16:42,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:42,238 INFO L93 Difference]: Finished difference Result 1024 states and 1465 transitions. [2020-12-22 07:16:42,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:42,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-12-22 07:16:42,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:42,244 INFO L225 Difference]: With dead ends: 1024 [2020-12-22 07:16:42,244 INFO L226 Difference]: Without dead ends: 713 [2020-12-22 07:16:42,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 07:16:42,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-12-22 07:16:42,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 434. [2020-12-22 07:16:42,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-12-22 07:16:42,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 611 transitions. [2020-12-22 07:16:42,278 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 611 transitions. Word has length 57 [2020-12-22 07:16:42,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:42,279 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 611 transitions. [2020-12-22 07:16:42,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:42,279 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 611 transitions. [2020-12-22 07:16:42,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 07:16:42,280 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:42,281 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] [2020-12-22 07:16:42,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:16:42,281 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:42,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:42,282 INFO L82 PathProgramCache]: Analyzing trace with hash 2035065116, now seen corresponding path program 1 times [2020-12-22 07:16:42,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:42,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412995457] [2020-12-22 07:16:42,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:42,384 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 07:16:42,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412995457] [2020-12-22 07:16:42,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:42,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:42,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469738624] [2020-12-22 07:16:42,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:42,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:42,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:42,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:42,387 INFO L87 Difference]: Start difference. First operand 434 states and 611 transitions. Second operand 3 states. [2020-12-22 07:16:42,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:42,439 INFO L93 Difference]: Finished difference Result 872 states and 1252 transitions. [2020-12-22 07:16:42,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:42,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-12-22 07:16:42,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:42,443 INFO L225 Difference]: With dead ends: 872 [2020-12-22 07:16:42,444 INFO L226 Difference]: Without dead ends: 561 [2020-12-22 07:16:42,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 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 07:16:42,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2020-12-22 07:16:42,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 429. [2020-12-22 07:16:42,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-12-22 07:16:42,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 603 transitions. [2020-12-22 07:16:42,473 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 603 transitions. Word has length 58 [2020-12-22 07:16:42,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:42,473 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 603 transitions. [2020-12-22 07:16:42,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:42,473 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 603 transitions. [2020-12-22 07:16:42,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 07:16:42,474 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:42,474 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] [2020-12-22 07:16:42,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:16:42,475 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:42,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:42,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1833641356, now seen corresponding path program 1 times [2020-12-22 07:16:42,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:42,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029264726] [2020-12-22 07:16:42,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:42,564 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 07:16:42,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029264726] [2020-12-22 07:16:42,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:42,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:42,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107008055] [2020-12-22 07:16:42,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:42,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:42,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:42,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:42,567 INFO L87 Difference]: Start difference. First operand 429 states and 603 transitions. Second operand 3 states. [2020-12-22 07:16:42,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:42,651 INFO L93 Difference]: Finished difference Result 871 states and 1251 transitions. [2020-12-22 07:16:42,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:42,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-22 07:16:42,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:42,655 INFO L225 Difference]: With dead ends: 871 [2020-12-22 07:16:42,656 INFO L226 Difference]: Without dead ends: 565 [2020-12-22 07:16:42,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 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 07:16:42,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-12-22 07:16:42,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 409. [2020-12-22 07:16:42,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-12-22 07:16:42,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 571 transitions. [2020-12-22 07:16:42,685 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 571 transitions. Word has length 62 [2020-12-22 07:16:42,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:42,685 INFO L481 AbstractCegarLoop]: Abstraction has 409 states and 571 transitions. [2020-12-22 07:16:42,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:42,685 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 571 transitions. [2020-12-22 07:16:42,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 07:16:42,686 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:42,686 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] [2020-12-22 07:16:42,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:16:42,687 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:42,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:42,688 INFO L82 PathProgramCache]: Analyzing trace with hash -532758708, now seen corresponding path program 1 times [2020-12-22 07:16:42,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:42,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944882804] [2020-12-22 07:16:42,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:42,751 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 07:16:42,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944882804] [2020-12-22 07:16:42,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:42,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:42,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329001810] [2020-12-22 07:16:42,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:42,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:42,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:42,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:42,753 INFO L87 Difference]: Start difference. First operand 409 states and 571 transitions. Second operand 3 states. [2020-12-22 07:16:42,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:42,827 INFO L93 Difference]: Finished difference Result 839 states and 1195 transitions. [2020-12-22 07:16:42,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:42,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 07:16:42,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:42,831 INFO L225 Difference]: With dead ends: 839 [2020-12-22 07:16:42,832 INFO L226 Difference]: Without dead ends: 553 [2020-12-22 07:16:42,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 07:16:42,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-12-22 07:16:42,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 397. [2020-12-22 07:16:42,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-12-22 07:16:42,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 553 transitions. [2020-12-22 07:16:42,862 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 553 transitions. Word has length 66 [2020-12-22 07:16:42,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:42,863 INFO L481 AbstractCegarLoop]: Abstraction has 397 states and 553 transitions. [2020-12-22 07:16:42,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:42,863 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 553 transitions. [2020-12-22 07:16:42,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 07:16:42,864 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:42,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:42,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:16:42,864 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:42,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:42,865 INFO L82 PathProgramCache]: Analyzing trace with hash 949999250, now seen corresponding path program 1 times [2020-12-22 07:16:42,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:42,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057462676] [2020-12-22 07:16:42,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:42,940 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 07:16:42,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057462676] [2020-12-22 07:16:42,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:42,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:42,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877200817] [2020-12-22 07:16:42,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:42,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:42,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:42,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:42,943 INFO L87 Difference]: Start difference. First operand 397 states and 553 transitions. Second operand 6 states. [2020-12-22 07:16:43,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:43,154 INFO L93 Difference]: Finished difference Result 1453 states and 2062 transitions. [2020-12-22 07:16:43,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:16:43,154 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 07:16:43,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:43,161 INFO L225 Difference]: With dead ends: 1453 [2020-12-22 07:16:43,161 INFO L226 Difference]: Without dead ends: 1179 [2020-12-22 07:16:43,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:16:43,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2020-12-22 07:16:43,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 418. [2020-12-22 07:16:43,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-22 07:16:43,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 577 transitions. [2020-12-22 07:16:43,200 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 577 transitions. Word has length 67 [2020-12-22 07:16:43,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:43,200 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 577 transitions. [2020-12-22 07:16:43,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:43,201 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 577 transitions. [2020-12-22 07:16:43,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 07:16:43,201 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:43,202 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] [2020-12-22 07:16:43,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:16:43,202 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:43,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:43,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1947699729, now seen corresponding path program 1 times [2020-12-22 07:16:43,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:43,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302135037] [2020-12-22 07:16:43,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:43,276 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 07:16:43,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302135037] [2020-12-22 07:16:43,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:43,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:43,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873912815] [2020-12-22 07:16:43,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:43,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:43,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:43,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:43,278 INFO L87 Difference]: Start difference. First operand 418 states and 577 transitions. Second operand 3 states. [2020-12-22 07:16:43,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:43,375 INFO L93 Difference]: Finished difference Result 856 states and 1211 transitions. [2020-12-22 07:16:43,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:43,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 07:16:43,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:43,379 INFO L225 Difference]: With dead ends: 856 [2020-12-22 07:16:43,380 INFO L226 Difference]: Without dead ends: 582 [2020-12-22 07:16:43,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 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 07:16:43,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2020-12-22 07:16:43,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 398. [2020-12-22 07:16:43,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-12-22 07:16:43,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 545 transitions. [2020-12-22 07:16:43,419 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 545 transitions. Word has length 69 [2020-12-22 07:16:43,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:43,419 INFO L481 AbstractCegarLoop]: Abstraction has 398 states and 545 transitions. [2020-12-22 07:16:43,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:43,419 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 545 transitions. [2020-12-22 07:16:43,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 07:16:43,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:43,420 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 07:16:43,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:16:43,421 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:43,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:43,422 INFO L82 PathProgramCache]: Analyzing trace with hash -344815767, now seen corresponding path program 1 times [2020-12-22 07:16:43,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:43,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025361728] [2020-12-22 07:16:43,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:43,487 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 07:16:43,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025361728] [2020-12-22 07:16:43,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:43,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:43,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690740214] [2020-12-22 07:16:43,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:43,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:43,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:43,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:43,490 INFO L87 Difference]: Start difference. First operand 398 states and 545 transitions. Second operand 3 states. [2020-12-22 07:16:43,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:43,587 INFO L93 Difference]: Finished difference Result 824 states and 1155 transitions. [2020-12-22 07:16:43,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:43,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 07:16:43,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:43,591 INFO L225 Difference]: With dead ends: 824 [2020-12-22 07:16:43,591 INFO L226 Difference]: Without dead ends: 570 [2020-12-22 07:16:43,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 07:16:43,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-12-22 07:16:43,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 386. [2020-12-22 07:16:43,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-12-22 07:16:43,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 527 transitions. [2020-12-22 07:16:43,628 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 527 transitions. Word has length 73 [2020-12-22 07:16:43,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:43,628 INFO L481 AbstractCegarLoop]: Abstraction has 386 states and 527 transitions. [2020-12-22 07:16:43,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:43,628 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 527 transitions. [2020-12-22 07:16:43,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 07:16:43,629 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:43,630 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 07:16:43,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:16:43,630 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:43,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:43,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1959055909, now seen corresponding path program 1 times [2020-12-22 07:16:43,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:43,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869016442] [2020-12-22 07:16:43,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:43,828 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 07:16:43,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869016442] [2020-12-22 07:16:43,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:43,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:43,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216487862] [2020-12-22 07:16:43,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:43,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:43,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:43,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:43,831 INFO L87 Difference]: Start difference. First operand 386 states and 527 transitions. Second operand 6 states. [2020-12-22 07:16:44,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:44,106 INFO L93 Difference]: Finished difference Result 1097 states and 1536 transitions. [2020-12-22 07:16:44,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:16:44,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-12-22 07:16:44,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:44,112 INFO L225 Difference]: With dead ends: 1097 [2020-12-22 07:16:44,112 INFO L226 Difference]: Without dead ends: 855 [2020-12-22 07:16:44,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:16:44,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-12-22 07:16:44,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 411. [2020-12-22 07:16:44,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2020-12-22 07:16:44,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 562 transitions. [2020-12-22 07:16:44,162 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 562 transitions. Word has length 76 [2020-12-22 07:16:44,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:44,162 INFO L481 AbstractCegarLoop]: Abstraction has 411 states and 562 transitions. [2020-12-22 07:16:44,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:44,162 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 562 transitions. [2020-12-22 07:16:44,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 07:16:44,163 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:44,164 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 07:16:44,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:16:44,164 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:44,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:44,165 INFO L82 PathProgramCache]: Analyzing trace with hash 317146558, now seen corresponding path program 1 times [2020-12-22 07:16:44,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:44,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200222898] [2020-12-22 07:16:44,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:44,346 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 07:16:44,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200222898] [2020-12-22 07:16:44,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:44,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:16:44,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810296644] [2020-12-22 07:16:44,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:16:44,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:44,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:16:44,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:16:44,351 INFO L87 Difference]: Start difference. First operand 411 states and 562 transitions. Second operand 7 states. [2020-12-22 07:16:44,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:44,829 INFO L93 Difference]: Finished difference Result 1425 states and 1984 transitions. [2020-12-22 07:16:44,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:16:44,830 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2020-12-22 07:16:44,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:44,836 INFO L225 Difference]: With dead ends: 1425 [2020-12-22 07:16:44,837 INFO L226 Difference]: Without dead ends: 1165 [2020-12-22 07:16:44,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:16:44,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2020-12-22 07:16:44,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 439. [2020-12-22 07:16:44,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-12-22 07:16:44,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 593 transitions. [2020-12-22 07:16:44,906 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 593 transitions. Word has length 76 [2020-12-22 07:16:44,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:44,907 INFO L481 AbstractCegarLoop]: Abstraction has 439 states and 593 transitions. [2020-12-22 07:16:44,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:16:44,907 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 593 transitions. [2020-12-22 07:16:44,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 07:16:44,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:44,908 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 07:16:44,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:16:44,909 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:44,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:44,910 INFO L82 PathProgramCache]: Analyzing trace with hash 917353494, now seen corresponding path program 1 times [2020-12-22 07:16:44,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:44,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893080509] [2020-12-22 07:16:44,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:45,004 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 07:16:45,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893080509] [2020-12-22 07:16:45,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:45,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:45,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826885882] [2020-12-22 07:16:45,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:45,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:45,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:45,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:45,008 INFO L87 Difference]: Start difference. First operand 439 states and 593 transitions. Second operand 4 states. [2020-12-22 07:16:45,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:45,193 INFO L93 Difference]: Finished difference Result 1127 states and 1539 transitions. [2020-12-22 07:16:45,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:45,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-12-22 07:16:45,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:45,198 INFO L225 Difference]: With dead ends: 1127 [2020-12-22 07:16:45,198 INFO L226 Difference]: Without dead ends: 861 [2020-12-22 07:16:45,200 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 07:16:45,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-12-22 07:16:45,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 660. [2020-12-22 07:16:45,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2020-12-22 07:16:45,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 881 transitions. [2020-12-22 07:16:45,270 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 881 transitions. Word has length 76 [2020-12-22 07:16:45,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:45,270 INFO L481 AbstractCegarLoop]: Abstraction has 660 states and 881 transitions. [2020-12-22 07:16:45,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:45,271 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 881 transitions. [2020-12-22 07:16:45,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 07:16:45,276 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:45,276 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 07:16:45,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:16:45,278 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:45,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:45,278 INFO L82 PathProgramCache]: Analyzing trace with hash 956639496, now seen corresponding path program 1 times [2020-12-22 07:16:45,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:45,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114791336] [2020-12-22 07:16:45,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:45,408 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 07:16:45,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114791336] [2020-12-22 07:16:45,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:45,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:45,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321153474] [2020-12-22 07:16:45,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:45,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:45,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:45,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:45,417 INFO L87 Difference]: Start difference. First operand 660 states and 881 transitions. Second operand 3 states. [2020-12-22 07:16:45,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:45,521 INFO L93 Difference]: Finished difference Result 1151 states and 1571 transitions. [2020-12-22 07:16:45,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:45,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 07:16:45,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:45,527 INFO L225 Difference]: With dead ends: 1151 [2020-12-22 07:16:45,527 INFO L226 Difference]: Without dead ends: 770 [2020-12-22 07:16:45,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 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 07:16:45,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2020-12-22 07:16:45,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 656. [2020-12-22 07:16:45,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2020-12-22 07:16:45,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 874 transitions. [2020-12-22 07:16:45,591 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 874 transitions. Word has length 77 [2020-12-22 07:16:45,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:45,591 INFO L481 AbstractCegarLoop]: Abstraction has 656 states and 874 transitions. [2020-12-22 07:16:45,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:45,592 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 874 transitions. [2020-12-22 07:16:45,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 07:16:45,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:45,593 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 07:16:45,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 07:16:45,594 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:45,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:45,594 INFO L82 PathProgramCache]: Analyzing trace with hash 341178161, now seen corresponding path program 1 times [2020-12-22 07:16:45,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:45,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704127299] [2020-12-22 07:16:45,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:45,697 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 07:16:45,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704127299] [2020-12-22 07:16:45,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:45,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:45,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345570923] [2020-12-22 07:16:45,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:45,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:45,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:45,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:45,701 INFO L87 Difference]: Start difference. First operand 656 states and 874 transitions. Second operand 4 states. [2020-12-22 07:16:45,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:45,893 INFO L93 Difference]: Finished difference Result 1465 states and 1975 transitions. [2020-12-22 07:16:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:45,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-22 07:16:45,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:45,900 INFO L225 Difference]: With dead ends: 1465 [2020-12-22 07:16:45,900 INFO L226 Difference]: Without dead ends: 1074 [2020-12-22 07:16:45,901 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 07:16:45,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2020-12-22 07:16:45,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 875. [2020-12-22 07:16:45,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 875 states. [2020-12-22 07:16:45,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1156 transitions. [2020-12-22 07:16:45,988 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1156 transitions. Word has length 78 [2020-12-22 07:16:45,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:45,988 INFO L481 AbstractCegarLoop]: Abstraction has 875 states and 1156 transitions. [2020-12-22 07:16:45,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:45,989 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1156 transitions. [2020-12-22 07:16:45,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 07:16:45,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:45,990 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 07:16:45,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 07:16:45,991 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:45,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:45,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1360037685, now seen corresponding path program 1 times [2020-12-22 07:16:45,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:45,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280424836] [2020-12-22 07:16:45,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:46,147 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 07:16:46,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280424836] [2020-12-22 07:16:46,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:46,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:46,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103545308] [2020-12-22 07:16:46,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:46,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:46,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:46,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:46,150 INFO L87 Difference]: Start difference. First operand 875 states and 1156 transitions. Second operand 6 states. [2020-12-22 07:16:46,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:46,736 INFO L93 Difference]: Finished difference Result 3252 states and 4369 transitions. [2020-12-22 07:16:46,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:16:46,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-22 07:16:46,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:46,750 INFO L225 Difference]: With dead ends: 3252 [2020-12-22 07:16:46,750 INFO L226 Difference]: Without dead ends: 2730 [2020-12-22 07:16:46,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:16:46,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2020-12-22 07:16:46,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 1001. [2020-12-22 07:16:46,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-12-22 07:16:46,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1303 transitions. [2020-12-22 07:16:46,890 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1303 transitions. Word has length 78 [2020-12-22 07:16:46,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:46,891 INFO L481 AbstractCegarLoop]: Abstraction has 1001 states and 1303 transitions. [2020-12-22 07:16:46,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:46,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1303 transitions. [2020-12-22 07:16:46,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 07:16:46,893 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:46,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:46,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 07:16:46,893 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:46,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:46,894 INFO L82 PathProgramCache]: Analyzing trace with hash -504696615, now seen corresponding path program 1 times [2020-12-22 07:16:46,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:46,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849532508] [2020-12-22 07:16:46,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:46,986 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 07:16:46,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849532508] [2020-12-22 07:16:46,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:46,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:46,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645821431] [2020-12-22 07:16:46,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:46,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:46,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:46,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:46,990 INFO L87 Difference]: Start difference. First operand 1001 states and 1303 transitions. Second operand 4 states. [2020-12-22 07:16:47,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:47,246 INFO L93 Difference]: Finished difference Result 2405 states and 3178 transitions. [2020-12-22 07:16:47,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:47,247 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-12-22 07:16:47,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:47,255 INFO L225 Difference]: With dead ends: 2405 [2020-12-22 07:16:47,256 INFO L226 Difference]: Without dead ends: 1835 [2020-12-22 07:16:47,257 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 07:16:47,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2020-12-22 07:16:47,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1356. [2020-12-22 07:16:47,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1356 states. [2020-12-22 07:16:47,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 1760 transitions. [2020-12-22 07:16:47,412 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 1760 transitions. Word has length 79 [2020-12-22 07:16:47,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:47,412 INFO L481 AbstractCegarLoop]: Abstraction has 1356 states and 1760 transitions. [2020-12-22 07:16:47,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:47,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 1760 transitions. [2020-12-22 07:16:47,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 07:16:47,415 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:47,415 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 07:16:47,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 07:16:47,415 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:47,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:47,416 INFO L82 PathProgramCache]: Analyzing trace with hash -676572605, now seen corresponding path program 1 times [2020-12-22 07:16:47,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:47,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328987688] [2020-12-22 07:16:47,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:47,456 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 07:16:47,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328987688] [2020-12-22 07:16:47,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:47,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:47,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277374749] [2020-12-22 07:16:47,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:47,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:47,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:47,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:47,459 INFO L87 Difference]: Start difference. First operand 1356 states and 1760 transitions. Second operand 3 states. [2020-12-22 07:16:47,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:47,756 INFO L93 Difference]: Finished difference Result 3202 states and 4179 transitions. [2020-12-22 07:16:47,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:47,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 07:16:47,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:47,767 INFO L225 Difference]: With dead ends: 3202 [2020-12-22 07:16:47,767 INFO L226 Difference]: Without dead ends: 2224 [2020-12-22 07:16:47,770 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 07:16:47,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2020-12-22 07:16:47,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 1358. [2020-12-22 07:16:47,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1358 states. [2020-12-22 07:16:47,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1762 transitions. [2020-12-22 07:16:47,907 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1762 transitions. Word has length 80 [2020-12-22 07:16:47,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:47,907 INFO L481 AbstractCegarLoop]: Abstraction has 1358 states and 1762 transitions. [2020-12-22 07:16:47,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:47,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1762 transitions. [2020-12-22 07:16:47,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 07:16:47,910 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:47,910 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 07:16:47,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 07:16:47,910 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:47,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:47,911 INFO L82 PathProgramCache]: Analyzing trace with hash 614216993, now seen corresponding path program 1 times [2020-12-22 07:16:47,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:47,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435121066] [2020-12-22 07:16:47,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:48,027 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 07:16:48,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435121066] [2020-12-22 07:16:48,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:48,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:48,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603313741] [2020-12-22 07:16:48,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:48,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:48,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:48,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:48,030 INFO L87 Difference]: Start difference. First operand 1358 states and 1762 transitions. Second operand 6 states. [2020-12-22 07:16:48,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:48,455 INFO L93 Difference]: Finished difference Result 2145 states and 2828 transitions. [2020-12-22 07:16:48,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:16:48,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-22 07:16:48,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:48,471 INFO L225 Difference]: With dead ends: 2145 [2020-12-22 07:16:48,471 INFO L226 Difference]: Without dead ends: 2143 [2020-12-22 07:16:48,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:16:48,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-12-22 07:16:48,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 1360. [2020-12-22 07:16:48,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1360 states. [2020-12-22 07:16:48,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1764 transitions. [2020-12-22 07:16:48,658 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1764 transitions. Word has length 81 [2020-12-22 07:16:48,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:48,659 INFO L481 AbstractCegarLoop]: Abstraction has 1360 states and 1764 transitions. [2020-12-22 07:16:48,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:48,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1764 transitions. [2020-12-22 07:16:48,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 07:16:48,661 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:48,661 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 07:16:48,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 07:16:48,662 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:48,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:48,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1500088230, now seen corresponding path program 1 times [2020-12-22 07:16:48,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:48,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333581268] [2020-12-22 07:16:48,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:48,826 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 07:16:48,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333581268] [2020-12-22 07:16:48,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:48,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:48,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738698530] [2020-12-22 07:16:48,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:48,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:48,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:48,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:48,829 INFO L87 Difference]: Start difference. First operand 1360 states and 1764 transitions. Second operand 6 states. [2020-12-22 07:16:49,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:49,310 INFO L93 Difference]: Finished difference Result 3228 states and 4330 transitions. [2020-12-22 07:16:49,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:16:49,311 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-22 07:16:49,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:49,323 INFO L225 Difference]: With dead ends: 3228 [2020-12-22 07:16:49,323 INFO L226 Difference]: Without dead ends: 2410 [2020-12-22 07:16:49,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:16:49,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2020-12-22 07:16:49,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 1360. [2020-12-22 07:16:49,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1360 states. [2020-12-22 07:16:49,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1752 transitions. [2020-12-22 07:16:49,528 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1752 transitions. Word has length 81 [2020-12-22 07:16:49,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:49,528 INFO L481 AbstractCegarLoop]: Abstraction has 1360 states and 1752 transitions. [2020-12-22 07:16:49,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:49,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1752 transitions. [2020-12-22 07:16:49,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 07:16:49,531 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:49,531 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 07:16:49,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 07:16:49,531 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:49,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:49,532 INFO L82 PathProgramCache]: Analyzing trace with hash -659983772, now seen corresponding path program 1 times [2020-12-22 07:16:49,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:49,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240163952] [2020-12-22 07:16:49,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:49,609 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 07:16:49,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240163952] [2020-12-22 07:16:49,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:49,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:49,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564304233] [2020-12-22 07:16:49,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:49,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:49,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:49,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:49,612 INFO L87 Difference]: Start difference. First operand 1360 states and 1752 transitions. Second operand 4 states. [2020-12-22 07:16:49,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:49,868 INFO L93 Difference]: Finished difference Result 2706 states and 3519 transitions. [2020-12-22 07:16:49,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:49,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-12-22 07:16:49,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:49,876 INFO L225 Difference]: With dead ends: 2706 [2020-12-22 07:16:49,876 INFO L226 Difference]: Without dead ends: 1422 [2020-12-22 07:16:49,879 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 07:16:49,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2020-12-22 07:16:50,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1060. [2020-12-22 07:16:50,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1060 states. [2020-12-22 07:16:50,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1384 transitions. [2020-12-22 07:16:50,056 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1384 transitions. Word has length 81 [2020-12-22 07:16:50,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:50,057 INFO L481 AbstractCegarLoop]: Abstraction has 1060 states and 1384 transitions. [2020-12-22 07:16:50,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:50,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1384 transitions. [2020-12-22 07:16:50,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 07:16:50,059 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:50,059 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 07:16:50,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 07:16:50,060 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:50,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:50,061 INFO L82 PathProgramCache]: Analyzing trace with hash -63459148, now seen corresponding path program 1 times [2020-12-22 07:16:50,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:50,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647224457] [2020-12-22 07:16:50,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:50,122 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 07:16:50,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647224457] [2020-12-22 07:16:50,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:50,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:50,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860769972] [2020-12-22 07:16:50,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:50,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:50,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:50,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:50,125 INFO L87 Difference]: Start difference. First operand 1060 states and 1384 transitions. Second operand 3 states. [2020-12-22 07:16:50,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:50,511 INFO L93 Difference]: Finished difference Result 2504 states and 3290 transitions. [2020-12-22 07:16:50,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:50,512 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 07:16:50,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:50,518 INFO L225 Difference]: With dead ends: 2504 [2020-12-22 07:16:50,519 INFO L226 Difference]: Without dead ends: 1594 [2020-12-22 07:16:50,521 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 07:16:50,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2020-12-22 07:16:50,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1066. [2020-12-22 07:16:50,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-12-22 07:16:50,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1390 transitions. [2020-12-22 07:16:50,670 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1390 transitions. Word has length 82 [2020-12-22 07:16:50,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:50,670 INFO L481 AbstractCegarLoop]: Abstraction has 1066 states and 1390 transitions. [2020-12-22 07:16:50,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:50,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1390 transitions. [2020-12-22 07:16:50,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 07:16:50,672 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:50,672 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 07:16:50,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 07:16:50,672 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:50,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:50,673 INFO L82 PathProgramCache]: Analyzing trace with hash -753963456, now seen corresponding path program 1 times [2020-12-22 07:16:50,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:50,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70143820] [2020-12-22 07:16:50,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:50,744 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 07:16:50,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70143820] [2020-12-22 07:16:50,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:50,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:50,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29326537] [2020-12-22 07:16:50,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:50,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:50,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:50,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:50,746 INFO L87 Difference]: Start difference. First operand 1066 states and 1390 transitions. Second operand 4 states. [2020-12-22 07:16:50,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:50,990 INFO L93 Difference]: Finished difference Result 2448 states and 3210 transitions. [2020-12-22 07:16:50,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:50,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-12-22 07:16:50,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:50,996 INFO L225 Difference]: With dead ends: 2448 [2020-12-22 07:16:50,996 INFO L226 Difference]: Without dead ends: 1482 [2020-12-22 07:16:50,999 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 07:16:51,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2020-12-22 07:16:51,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1006. [2020-12-22 07:16:51,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1006 states. [2020-12-22 07:16:51,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1308 transitions. [2020-12-22 07:16:51,154 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1308 transitions. Word has length 82 [2020-12-22 07:16:51,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:51,154 INFO L481 AbstractCegarLoop]: Abstraction has 1006 states and 1308 transitions. [2020-12-22 07:16:51,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:51,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1308 transitions. [2020-12-22 07:16:51,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 07:16:51,156 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:51,156 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] [2020-12-22 07:16:51,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 07:16:51,156 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:51,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:51,157 INFO L82 PathProgramCache]: Analyzing trace with hash -883855950, now seen corresponding path program 1 times [2020-12-22 07:16:51,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:51,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248774408] [2020-12-22 07:16:51,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:51,293 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 07:16:51,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248774408] [2020-12-22 07:16:51,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:51,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:51,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248164865] [2020-12-22 07:16:51,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:51,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:51,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:51,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:51,295 INFO L87 Difference]: Start difference. First operand 1006 states and 1308 transitions. Second operand 6 states. [2020-12-22 07:16:51,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:51,870 INFO L93 Difference]: Finished difference Result 3321 states and 4518 transitions. [2020-12-22 07:16:51,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:16:51,871 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-12-22 07:16:51,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:51,877 INFO L225 Difference]: With dead ends: 3321 [2020-12-22 07:16:51,877 INFO L226 Difference]: Without dead ends: 2514 [2020-12-22 07:16:51,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:16:51,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2020-12-22 07:16:52,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 994. [2020-12-22 07:16:52,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 994 states. [2020-12-22 07:16:52,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1296 transitions. [2020-12-22 07:16:52,062 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1296 transitions. Word has length 84 [2020-12-22 07:16:52,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:52,062 INFO L481 AbstractCegarLoop]: Abstraction has 994 states and 1296 transitions. [2020-12-22 07:16:52,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:52,063 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1296 transitions. [2020-12-22 07:16:52,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 07:16:52,064 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:52,064 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] [2020-12-22 07:16:52,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 07:16:52,064 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:52,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:52,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1751255189, now seen corresponding path program 1 times [2020-12-22 07:16:52,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:52,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865317894] [2020-12-22 07:16:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:52,160 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 07:16:52,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865317894] [2020-12-22 07:16:52,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:52,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:52,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573180961] [2020-12-22 07:16:52,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:52,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:52,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:52,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:52,162 INFO L87 Difference]: Start difference. First operand 994 states and 1296 transitions. Second operand 6 states. [2020-12-22 07:16:52,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:52,537 INFO L93 Difference]: Finished difference Result 2388 states and 3264 transitions. [2020-12-22 07:16:52,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:16:52,537 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-12-22 07:16:52,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:52,541 INFO L225 Difference]: With dead ends: 2388 [2020-12-22 07:16:52,542 INFO L226 Difference]: Without dead ends: 1581 [2020-12-22 07:16:52,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:16:52,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2020-12-22 07:16:52,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1000. [2020-12-22 07:16:52,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-12-22 07:16:52,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1302 transitions. [2020-12-22 07:16:52,705 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1302 transitions. Word has length 85 [2020-12-22 07:16:52,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:52,706 INFO L481 AbstractCegarLoop]: Abstraction has 1000 states and 1302 transitions. [2020-12-22 07:16:52,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:52,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1302 transitions. [2020-12-22 07:16:52,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 07:16:52,720 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:52,722 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:52,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 07:16:52,729 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:52,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:52,730 INFO L82 PathProgramCache]: Analyzing trace with hash -2138552324, now seen corresponding path program 1 times [2020-12-22 07:16:52,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:52,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842869951] [2020-12-22 07:16:52,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:52,986 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:52,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842869951] [2020-12-22 07:16:52,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483713538] [2020-12-22 07:16:52,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:53,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 07:16:53,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:16:53,664 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:16:53,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:16:53,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2020-12-22 07:16:53,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745325454] [2020-12-22 07:16:53,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:53,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:53,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:53,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-12-22 07:16:53,667 INFO L87 Difference]: Start difference. First operand 1000 states and 1302 transitions. Second operand 6 states. [2020-12-22 07:16:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:54,158 INFO L93 Difference]: Finished difference Result 2593 states and 3515 transitions. [2020-12-22 07:16:54,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:16:54,159 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-12-22 07:16:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:54,163 INFO L225 Difference]: With dead ends: 2593 [2020-12-22 07:16:54,163 INFO L226 Difference]: Without dead ends: 1780 [2020-12-22 07:16:54,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-12-22 07:16:54,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2020-12-22 07:16:54,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1000. [2020-12-22 07:16:54,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-12-22 07:16:54,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1301 transitions. [2020-12-22 07:16:54,357 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1301 transitions. Word has length 134 [2020-12-22 07:16:54,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:54,357 INFO L481 AbstractCegarLoop]: Abstraction has 1000 states and 1301 transitions. [2020-12-22 07:16:54,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:54,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1301 transitions. [2020-12-22 07:16:54,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 07:16:54,361 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:54,361 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:54,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:54,577 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:54,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:54,578 INFO L82 PathProgramCache]: Analyzing trace with hash -687074335, now seen corresponding path program 1 times [2020-12-22 07:16:54,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:54,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091195179] [2020-12-22 07:16:54,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:54,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091195179] [2020-12-22 07:16:54,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878788337] [2020-12-22 07:16:54,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:54,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:16:54,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:16:55,222 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:55,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:16:55,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-12-22 07:16:55,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494584174] [2020-12-22 07:16:55,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 07:16:55,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:55,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 07:16:55,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:16:55,225 INFO L87 Difference]: Start difference. First operand 1000 states and 1301 transitions. Second operand 13 states. [2020-12-22 07:17:10,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:10,227 INFO L93 Difference]: Finished difference Result 16786 states and 22436 transitions. [2020-12-22 07:17:10,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2020-12-22 07:17:10,228 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 138 [2020-12-22 07:17:10,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:10,268 INFO L225 Difference]: With dead ends: 16786 [2020-12-22 07:17:10,268 INFO L226 Difference]: Without dead ends: 15979 [2020-12-22 07:17:10,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28995 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=8289, Invalid=55467, Unknown=0, NotChecked=0, Total=63756 [2020-12-22 07:17:10,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15979 states. [2020-12-22 07:17:10,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15979 to 2718. [2020-12-22 07:17:10,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2718 states. [2020-12-22 07:17:10,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2718 states to 2718 states and 3545 transitions. [2020-12-22 07:17:10,946 INFO L78 Accepts]: Start accepts. Automaton has 2718 states and 3545 transitions. Word has length 138 [2020-12-22 07:17:10,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:10,946 INFO L481 AbstractCegarLoop]: Abstraction has 2718 states and 3545 transitions. [2020-12-22 07:17:10,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 07:17:10,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2718 states and 3545 transitions. [2020-12-22 07:17:10,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-22 07:17:10,953 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:10,953 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:17:11,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:11,170 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:11,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:11,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1319221063, now seen corresponding path program 1 times [2020-12-22 07:17:11,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:11,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061242588] [2020-12-22 07:17:11,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:11,402 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:11,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061242588] [2020-12-22 07:17:11,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042481220] [2020-12-22 07:17:11,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:11,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 07:17:11,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:11,839 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:17:11,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:17:11,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 9 [2020-12-22 07:17:11,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384401316] [2020-12-22 07:17:11,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:17:11,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:11,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:17:11,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:17:11,841 INFO L87 Difference]: Start difference. First operand 2718 states and 3545 transitions. Second operand 6 states. [2020-12-22 07:17:12,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:12,815 INFO L93 Difference]: Finished difference Result 7282 states and 9888 transitions. [2020-12-22 07:17:12,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:17:12,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-12-22 07:17:12,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:12,826 INFO L225 Difference]: With dead ends: 7282 [2020-12-22 07:17:12,826 INFO L226 Difference]: Without dead ends: 4791 [2020-12-22 07:17:12,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 141 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:17:12,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4791 states. [2020-12-22 07:17:13,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4791 to 2375. [2020-12-22 07:17:13,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2375 states. [2020-12-22 07:17:13,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 3104 transitions. [2020-12-22 07:17:13,290 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 3104 transitions. Word has length 139 [2020-12-22 07:17:13,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:13,290 INFO L481 AbstractCegarLoop]: Abstraction has 2375 states and 3104 transitions. [2020-12-22 07:17:13,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:17:13,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 3104 transitions. [2020-12-22 07:17:13,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-22 07:17:13,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:13,299 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:17:13,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:13,513 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:13,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:13,515 INFO L82 PathProgramCache]: Analyzing trace with hash -954398025, now seen corresponding path program 1 times [2020-12-22 07:17:13,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:13,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460004675] [2020-12-22 07:17:13,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:13,665 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 07:17:13,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460004675] [2020-12-22 07:17:13,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:13,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:17:13,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993671089] [2020-12-22 07:17:13,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:17:13,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:13,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:17:13,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:17:13,667 INFO L87 Difference]: Start difference. First operand 2375 states and 3104 transitions. Second operand 7 states. [2020-12-22 07:17:15,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:15,992 INFO L93 Difference]: Finished difference Result 14087 states and 18950 transitions. [2020-12-22 07:17:15,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 07:17:15,993 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-12-22 07:17:15,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:16,018 INFO L225 Difference]: With dead ends: 14087 [2020-12-22 07:17:16,018 INFO L226 Difference]: Without dead ends: 11979 [2020-12-22 07:17:16,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-12-22 07:17:16,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11979 states. [2020-12-22 07:17:16,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11979 to 2831. [2020-12-22 07:17:16,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2831 states. [2020-12-22 07:17:16,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2831 states to 2831 states and 3634 transitions. [2020-12-22 07:17:16,678 INFO L78 Accepts]: Start accepts. Automaton has 2831 states and 3634 transitions. Word has length 140 [2020-12-22 07:17:16,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:16,678 INFO L481 AbstractCegarLoop]: Abstraction has 2831 states and 3634 transitions. [2020-12-22 07:17:16,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:17:16,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2831 states and 3634 transitions. [2020-12-22 07:17:16,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 07:17:16,691 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:16,691 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:17:16,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 07:17:16,691 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:16,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:16,692 INFO L82 PathProgramCache]: Analyzing trace with hash -186871780, now seen corresponding path program 1 times [2020-12-22 07:17:16,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:16,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349973006] [2020-12-22 07:17:16,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:16,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:16,896 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:16,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349973006] [2020-12-22 07:17:16,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803696437] [2020-12-22 07:17:16,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:17,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 07:17:17,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 07:17:17,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:17,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2020-12-22 07:17:17,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129873518] [2020-12-22 07:17:17,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 07:17:17,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:17,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 07:17:17,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:17:17,241 INFO L87 Difference]: Start difference. First operand 2831 states and 3634 transitions. Second operand 11 states. [2020-12-22 07:17:19,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:19,756 INFO L93 Difference]: Finished difference Result 8074 states and 10544 transitions. [2020-12-22 07:17:19,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-22 07:17:19,757 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 142 [2020-12-22 07:17:19,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:19,767 INFO L225 Difference]: With dead ends: 8074 [2020-12-22 07:17:19,767 INFO L226 Difference]: Without dead ends: 5307 [2020-12-22 07:17:19,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=525, Invalid=1545, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 07:17:19,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5307 states. [2020-12-22 07:17:20,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5307 to 2352. [2020-12-22 07:17:20,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2352 states. [2020-12-22 07:17:20,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3021 transitions. [2020-12-22 07:17:20,194 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3021 transitions. Word has length 142 [2020-12-22 07:17:20,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:20,195 INFO L481 AbstractCegarLoop]: Abstraction has 2352 states and 3021 transitions. [2020-12-22 07:17:20,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 07:17:20,195 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3021 transitions. [2020-12-22 07:17:20,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 07:17:20,201 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:20,201 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:17:20,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:20,416 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:20,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:20,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1061111299, now seen corresponding path program 1 times [2020-12-22 07:17:20,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:20,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902494245] [2020-12-22 07:17:20,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:20,743 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:20,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902494245] [2020-12-22 07:17:20,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299614233] [2020-12-22 07:17:20,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:20,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 07:17:21,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:21,045 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:17:21,354 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:21,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:21,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 17 [2020-12-22 07:17:21,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803657732] [2020-12-22 07:17:21,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 07:17:21,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:21,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 07:17:21,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2020-12-22 07:17:21,356 INFO L87 Difference]: Start difference. First operand 2352 states and 3021 transitions. Second operand 18 states. [2020-12-22 07:17:23,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:23,881 INFO L93 Difference]: Finished difference Result 6478 states and 8354 transitions. [2020-12-22 07:17:23,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 07:17:23,882 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 142 [2020-12-22 07:17:23,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:23,888 INFO L225 Difference]: With dead ends: 6478 [2020-12-22 07:17:23,889 INFO L226 Difference]: Without dead ends: 4341 [2020-12-22 07:17:23,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=309, Invalid=1173, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 07:17:23,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4341 states. [2020-12-22 07:17:24,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4341 to 2609. [2020-12-22 07:17:24,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2609 states. [2020-12-22 07:17:24,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 3344 transitions. [2020-12-22 07:17:24,386 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 3344 transitions. Word has length 142 [2020-12-22 07:17:24,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:24,387 INFO L481 AbstractCegarLoop]: Abstraction has 2609 states and 3344 transitions. [2020-12-22 07:17:24,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 07:17:24,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 3344 transitions. [2020-12-22 07:17:24,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 07:17:24,392 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:24,392 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:17:24,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-22 07:17:24,599 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:24,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:24,600 INFO L82 PathProgramCache]: Analyzing trace with hash -2099695873, now seen corresponding path program 1 times [2020-12-22 07:17:24,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:24,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91992252] [2020-12-22 07:17:24,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:24,719 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 07:17:24,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91992252] [2020-12-22 07:17:24,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:24,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:17:24,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284249075] [2020-12-22 07:17:24,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:17:24,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:24,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:17:24,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:17:24,721 INFO L87 Difference]: Start difference. First operand 2609 states and 3344 transitions. Second operand 5 states. [2020-12-22 07:17:25,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:25,270 INFO L93 Difference]: Finished difference Result 4924 states and 6359 transitions. [2020-12-22 07:17:25,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:17:25,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-12-22 07:17:25,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:25,273 INFO L225 Difference]: With dead ends: 4924 [2020-12-22 07:17:25,274 INFO L226 Difference]: Without dead ends: 2469 [2020-12-22 07:17:25,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:17:25,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2020-12-22 07:17:25,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2469. [2020-12-22 07:17:25,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2469 states. [2020-12-22 07:17:25,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 3167 transitions. [2020-12-22 07:17:25,641 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 3167 transitions. Word has length 142 [2020-12-22 07:17:25,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:25,642 INFO L481 AbstractCegarLoop]: Abstraction has 2469 states and 3167 transitions. [2020-12-22 07:17:25,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:17:25,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 3167 transitions. [2020-12-22 07:17:25,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 07:17:25,647 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:25,647 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:17:25,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 07:17:25,647 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:25,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:25,648 INFO L82 PathProgramCache]: Analyzing trace with hash 716339399, now seen corresponding path program 1 times [2020-12-22 07:17:25,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:25,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675662543] [2020-12-22 07:17:25,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:25,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675662543] [2020-12-22 07:17:25,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038599729] [2020-12-22 07:17:25,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:26,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 07:17:26,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:26,272 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 07:17:26,289 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 07:17:26,683 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:26,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:26,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 17 [2020-12-22 07:17:26,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192697777] [2020-12-22 07:17:26,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 07:17:26,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:26,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 07:17:26,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2020-12-22 07:17:26,685 INFO L87 Difference]: Start difference. First operand 2469 states and 3167 transitions. Second operand 18 states. [2020-12-22 07:17:30,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:30,099 INFO L93 Difference]: Finished difference Result 6760 states and 8694 transitions. [2020-12-22 07:17:30,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-22 07:17:30,099 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 143 [2020-12-22 07:17:30,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:30,106 INFO L225 Difference]: With dead ends: 6760 [2020-12-22 07:17:30,106 INFO L226 Difference]: Without dead ends: 4506 [2020-12-22 07:17:30,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=401, Invalid=1579, Unknown=0, NotChecked=0, Total=1980 [2020-12-22 07:17:30,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2020-12-22 07:17:30,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 2751. [2020-12-22 07:17:30,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2751 states. [2020-12-22 07:17:30,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2751 states to 2751 states and 3520 transitions. [2020-12-22 07:17:30,746 INFO L78 Accepts]: Start accepts. Automaton has 2751 states and 3520 transitions. Word has length 143 [2020-12-22 07:17:30,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:30,746 INFO L481 AbstractCegarLoop]: Abstraction has 2751 states and 3520 transitions. [2020-12-22 07:17:30,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 07:17:30,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2751 states and 3520 transitions. [2020-12-22 07:17:30,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 07:17:30,751 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:30,752 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:17:30,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:30,966 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:30,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:30,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1256825979, now seen corresponding path program 1 times [2020-12-22 07:17:30,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:30,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346720599] [2020-12-22 07:17:30,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:31,032 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-22 07:17:31,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346720599] [2020-12-22 07:17:31,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:31,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:17:31,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364546436] [2020-12-22 07:17:31,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:17:31,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:31,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:17:31,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:17:31,034 INFO L87 Difference]: Start difference. First operand 2751 states and 3520 transitions. Second operand 4 states. [2020-12-22 07:17:31,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:31,620 INFO L93 Difference]: Finished difference Result 5134 states and 6612 transitions. [2020-12-22 07:17:31,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:17:31,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-12-22 07:17:31,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:31,625 INFO L225 Difference]: With dead ends: 5134 [2020-12-22 07:17:31,625 INFO L226 Difference]: Without dead ends: 2539 [2020-12-22 07:17:31,631 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 07:17:31,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2020-12-22 07:17:32,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2527. [2020-12-22 07:17:32,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2527 states. [2020-12-22 07:17:32,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2527 states to 2527 states and 3221 transitions. [2020-12-22 07:17:32,053 INFO L78 Accepts]: Start accepts. Automaton has 2527 states and 3221 transitions. Word has length 143 [2020-12-22 07:17:32,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:32,053 INFO L481 AbstractCegarLoop]: Abstraction has 2527 states and 3221 transitions. [2020-12-22 07:17:32,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:17:32,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2527 states and 3221 transitions. [2020-12-22 07:17:32,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 07:17:32,057 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:32,058 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:17:32,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 07:17:32,058 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:32,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:32,059 INFO L82 PathProgramCache]: Analyzing trace with hash 2112638184, now seen corresponding path program 1 times [2020-12-22 07:17:32,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:32,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873685559] [2020-12-22 07:17:32,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:32,279 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:32,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873685559] [2020-12-22 07:17:32,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:32,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:17:32,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012693991] [2020-12-22 07:17:32,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:17:32,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:32,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:17:32,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:17:32,281 INFO L87 Difference]: Start difference. First operand 2527 states and 3221 transitions. Second operand 10 states. [2020-12-22 07:17:33,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:33,674 INFO L93 Difference]: Finished difference Result 6648 states and 8546 transitions. [2020-12-22 07:17:33,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 07:17:33,675 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2020-12-22 07:17:33,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:33,679 INFO L225 Difference]: With dead ends: 6648 [2020-12-22 07:17:33,680 INFO L226 Difference]: Without dead ends: 4336 [2020-12-22 07:17:33,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2020-12-22 07:17:33,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2020-12-22 07:17:34,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 2861. [2020-12-22 07:17:34,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2861 states. [2020-12-22 07:17:34,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 3643 transitions. [2020-12-22 07:17:34,357 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 3643 transitions. Word has length 143 [2020-12-22 07:17:34,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:34,357 INFO L481 AbstractCegarLoop]: Abstraction has 2861 states and 3643 transitions. [2020-12-22 07:17:34,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:17:34,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 3643 transitions. [2020-12-22 07:17:34,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 07:17:34,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:34,362 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:17:34,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-22 07:17:34,363 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:34,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:34,363 INFO L82 PathProgramCache]: Analyzing trace with hash 270162470, now seen corresponding path program 1 times [2020-12-22 07:17:34,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:34,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759404088] [2020-12-22 07:17:34,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:34,491 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-22 07:17:34,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759404088] [2020-12-22 07:17:34,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:34,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:17:34,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618301464] [2020-12-22 07:17:34,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:17:34,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:34,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:17:34,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:17:34,494 INFO L87 Difference]: Start difference. First operand 2861 states and 3643 transitions. Second operand 5 states. [2020-12-22 07:17:35,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:35,110 INFO L93 Difference]: Finished difference Result 5348 states and 6849 transitions. [2020-12-22 07:17:35,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:17:35,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-12-22 07:17:35,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:35,113 INFO L225 Difference]: With dead ends: 5348 [2020-12-22 07:17:35,113 INFO L226 Difference]: Without dead ends: 2644 [2020-12-22 07:17:35,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:17:35,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2020-12-22 07:17:35,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2644. [2020-12-22 07:17:35,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2644 states. [2020-12-22 07:17:35,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3370 transitions. [2020-12-22 07:17:35,744 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3370 transitions. Word has length 143 [2020-12-22 07:17:35,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:35,744 INFO L481 AbstractCegarLoop]: Abstraction has 2644 states and 3370 transitions. [2020-12-22 07:17:35,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:17:35,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3370 transitions. [2020-12-22 07:17:35,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-22 07:17:35,749 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:35,749 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:17:35,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-22 07:17:35,750 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:35,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:35,750 INFO L82 PathProgramCache]: Analyzing trace with hash -954015038, now seen corresponding path program 1 times [2020-12-22 07:17:35,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:35,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118389780] [2020-12-22 07:17:35,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:36,099 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:36,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118389780] [2020-12-22 07:17:36,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018195904] [2020-12-22 07:17:36,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:36,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 07:17:36,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:36,425 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 07:17:36,688 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:36,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:36,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-12-22 07:17:36,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313254035] [2020-12-22 07:17:36,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:17:36,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:36,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:17:36,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:17:36,691 INFO L87 Difference]: Start difference. First operand 2644 states and 3370 transitions. Second operand 10 states. [2020-12-22 07:17:38,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:38,281 INFO L93 Difference]: Finished difference Result 7302 states and 9316 transitions. [2020-12-22 07:17:38,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 07:17:38,282 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 144 [2020-12-22 07:17:38,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:38,287 INFO L225 Difference]: With dead ends: 7302 [2020-12-22 07:17:38,287 INFO L226 Difference]: Without dead ends: 4873 [2020-12-22 07:17:38,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 138 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-12-22 07:17:38,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4873 states. [2020-12-22 07:17:38,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4873 to 2655. [2020-12-22 07:17:38,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2655 states. [2020-12-22 07:17:38,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2655 states to 2655 states and 3381 transitions. [2020-12-22 07:17:38,694 INFO L78 Accepts]: Start accepts. Automaton has 2655 states and 3381 transitions. Word has length 144 [2020-12-22 07:17:38,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:38,694 INFO L481 AbstractCegarLoop]: Abstraction has 2655 states and 3381 transitions. [2020-12-22 07:17:38,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:17:38,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2655 states and 3381 transitions. [2020-12-22 07:17:38,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-22 07:17:38,698 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:38,699 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:17:38,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:38,900 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:38,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:38,901 INFO L82 PathProgramCache]: Analyzing trace with hash 537259920, now seen corresponding path program 1 times [2020-12-22 07:17:38,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:38,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756264387] [2020-12-22 07:17:38,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:39,100 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:39,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756264387] [2020-12-22 07:17:39,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899112252] [2020-12-22 07:17:39,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:39,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 07:17:39,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:39,544 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:17:39,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:17:39,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2020-12-22 07:17:39,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617970805] [2020-12-22 07:17:39,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:17:39,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:39,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:17:39,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:17:39,546 INFO L87 Difference]: Start difference. First operand 2655 states and 3381 transitions. Second operand 6 states. [2020-12-22 07:17:40,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:40,828 INFO L93 Difference]: Finished difference Result 8673 states and 11324 transitions. [2020-12-22 07:17:40,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:17:40,829 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2020-12-22 07:17:40,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:40,837 INFO L225 Difference]: With dead ends: 8673 [2020-12-22 07:17:40,837 INFO L226 Difference]: Without dead ends: 6193 [2020-12-22 07:17:40,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-12-22 07:17:40,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6193 states. [2020-12-22 07:17:41,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6193 to 2655. [2020-12-22 07:17:41,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2655 states. [2020-12-22 07:17:41,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2655 states to 2655 states and 3379 transitions. [2020-12-22 07:17:41,363 INFO L78 Accepts]: Start accepts. Automaton has 2655 states and 3379 transitions. Word has length 144 [2020-12-22 07:17:41,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:41,363 INFO L481 AbstractCegarLoop]: Abstraction has 2655 states and 3379 transitions. [2020-12-22 07:17:41,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:17:41,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2655 states and 3379 transitions. [2020-12-22 07:17:41,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 07:17:41,366 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:41,366 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:17:41,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-12-22 07:17:41,567 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:41,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:41,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1592761434, now seen corresponding path program 1 times [2020-12-22 07:17:41,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:41,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544495792] [2020-12-22 07:17:41,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:41,710 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:41,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544495792] [2020-12-22 07:17:41,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460628442] [2020-12-22 07:17:41,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:41,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 07:17:41,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:42,078 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:42,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:42,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 8 [2020-12-22 07:17:42,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447102089] [2020-12-22 07:17:42,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:17:42,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:42,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:17:42,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:17:42,080 INFO L87 Difference]: Start difference. First operand 2655 states and 3379 transitions. Second operand 8 states. [2020-12-22 07:17:43,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:43,750 INFO L93 Difference]: Finished difference Result 10109 states and 12910 transitions. [2020-12-22 07:17:43,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 07:17:43,757 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 145 [2020-12-22 07:17:43,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:43,768 INFO L225 Difference]: With dead ends: 10109 [2020-12-22 07:17:43,768 INFO L226 Difference]: Without dead ends: 7669 [2020-12-22 07:17:43,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2020-12-22 07:17:43,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7669 states. [2020-12-22 07:17:44,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7669 to 4019. [2020-12-22 07:17:44,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4019 states. [2020-12-22 07:17:44,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4019 states to 4019 states and 5125 transitions. [2020-12-22 07:17:44,477 INFO L78 Accepts]: Start accepts. Automaton has 4019 states and 5125 transitions. Word has length 145 [2020-12-22 07:17:44,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:44,477 INFO L481 AbstractCegarLoop]: Abstraction has 4019 states and 5125 transitions. [2020-12-22 07:17:44,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:17:44,478 INFO L276 IsEmpty]: Start isEmpty. Operand 4019 states and 5125 transitions. [2020-12-22 07:17:44,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 07:17:44,483 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:44,484 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:17:44,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:44,698 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:44,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:44,699 INFO L82 PathProgramCache]: Analyzing trace with hash 729040484, now seen corresponding path program 1 times [2020-12-22 07:17:44,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:44,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883600052] [2020-12-22 07:17:44,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:44,802 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-22 07:17:44,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883600052] [2020-12-22 07:17:44,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:44,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:17:44,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161364343] [2020-12-22 07:17:44,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:17:44,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:44,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:17:44,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:17:44,804 INFO L87 Difference]: Start difference. First operand 4019 states and 5125 transitions. Second operand 4 states. [2020-12-22 07:17:45,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:45,593 INFO L93 Difference]: Finished difference Result 7017 states and 9028 transitions. [2020-12-22 07:17:45,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:17:45,594 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-12-22 07:17:45,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:45,598 INFO L225 Difference]: With dead ends: 7017 [2020-12-22 07:17:45,598 INFO L226 Difference]: Without dead ends: 3213 [2020-12-22 07:17:45,602 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 07:17:45,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2020-12-22 07:17:46,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 3194. [2020-12-22 07:17:46,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3194 states. [2020-12-22 07:17:46,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 4071 transitions. [2020-12-22 07:17:46,116 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 4071 transitions. Word has length 145 [2020-12-22 07:17:46,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:46,116 INFO L481 AbstractCegarLoop]: Abstraction has 3194 states and 4071 transitions. [2020-12-22 07:17:46,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:17:46,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 4071 transitions. [2020-12-22 07:17:46,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 07:17:46,120 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:46,120 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:17:46,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-12-22 07:17:46,120 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:46,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:46,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1178275366, now seen corresponding path program 1 times [2020-12-22 07:17:46,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:46,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791568259] [2020-12-22 07:17:46,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:46,365 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:46,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791568259] [2020-12-22 07:17:46,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892959799] [2020-12-22 07:17:46,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:46,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:17:46,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:46,838 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:46,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:46,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2020-12-22 07:17:46,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327884081] [2020-12-22 07:17:46,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 07:17:46,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:46,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 07:17:46,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:17:46,840 INFO L87 Difference]: Start difference. First operand 3194 states and 4071 transitions. Second operand 15 states. [2020-12-22 07:17:59,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:59,491 INFO L93 Difference]: Finished difference Result 18919 states and 24493 transitions. [2020-12-22 07:17:59,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2020-12-22 07:17:59,492 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-12-22 07:17:59,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:59,513 INFO L225 Difference]: With dead ends: 18919 [2020-12-22 07:17:59,513 INFO L226 Difference]: Without dead ends: 15940 [2020-12-22 07:17:59,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12818 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=4607, Invalid=26899, Unknown=0, NotChecked=0, Total=31506 [2020-12-22 07:17:59,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15940 states. [2020-12-22 07:18:00,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15940 to 3073. [2020-12-22 07:18:00,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3073 states. [2020-12-22 07:18:00,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3073 states to 3073 states and 3862 transitions. [2020-12-22 07:18:00,221 INFO L78 Accepts]: Start accepts. Automaton has 3073 states and 3862 transitions. Word has length 147 [2020-12-22 07:18:00,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:00,222 INFO L481 AbstractCegarLoop]: Abstraction has 3073 states and 3862 transitions. [2020-12-22 07:18:00,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 07:18:00,222 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 3862 transitions. [2020-12-22 07:18:00,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-22 07:18:00,225 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:00,225 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:18:00,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:18:00,426 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:18:00,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:00,427 INFO L82 PathProgramCache]: Analyzing trace with hash -572580853, now seen corresponding path program 1 times [2020-12-22 07:18:00,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:00,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262482516] [2020-12-22 07:18:00,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:00,596 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 07:18:00,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262482516] [2020-12-22 07:18:00,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:18:00,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:18:00,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392281914] [2020-12-22 07:18:00,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:18:00,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:00,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:18:00,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:18:00,598 INFO L87 Difference]: Start difference. First operand 3073 states and 3862 transitions. Second operand 6 states. [2020-12-22 07:18:02,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:02,606 INFO L93 Difference]: Finished difference Result 10397 states and 13397 transitions. [2020-12-22 07:18:02,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:18:02,607 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2020-12-22 07:18:02,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:02,615 INFO L225 Difference]: With dead ends: 10397 [2020-12-22 07:18:02,615 INFO L226 Difference]: Without dead ends: 7607 [2020-12-22 07:18:02,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:18:02,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7607 states. [2020-12-22 07:18:03,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7607 to 3154. [2020-12-22 07:18:03,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3154 states. [2020-12-22 07:18:03,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 3958 transitions. [2020-12-22 07:18:03,256 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 3958 transitions. Word has length 149 [2020-12-22 07:18:03,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:03,257 INFO L481 AbstractCegarLoop]: Abstraction has 3154 states and 3958 transitions. [2020-12-22 07:18:03,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:18:03,257 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 3958 transitions. [2020-12-22 07:18:03,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-22 07:18:03,259 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:03,259 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:18:03,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-12-22 07:18:03,260 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:18:03,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:03,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1890543379, now seen corresponding path program 1 times [2020-12-22 07:18:03,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:03,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402602180] [2020-12-22 07:18:03,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:03,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402602180] [2020-12-22 07:18:03,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149692456] [2020-12-22 07:18:03,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:18:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:03,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:18:03,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:18:03,926 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:03,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:18:03,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2020-12-22 07:18:03,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032388421] [2020-12-22 07:18:03,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:18:03,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:03,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:18:03,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:18:03,928 INFO L87 Difference]: Start difference. First operand 3154 states and 3958 transitions. Second operand 8 states. [2020-12-22 07:18:05,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:05,891 INFO L93 Difference]: Finished difference Result 9271 states and 11906 transitions. [2020-12-22 07:18:05,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 07:18:05,891 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 150 [2020-12-22 07:18:05,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:05,898 INFO L225 Difference]: With dead ends: 9271 [2020-12-22 07:18:05,898 INFO L226 Difference]: Without dead ends: 6400 [2020-12-22 07:18:05,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 154 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-12-22 07:18:05,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6400 states. [2020-12-22 07:18:06,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6400 to 3154. [2020-12-22 07:18:06,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3154 states. [2020-12-22 07:18:06,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 3930 transitions. [2020-12-22 07:18:06,534 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 3930 transitions. Word has length 150 [2020-12-22 07:18:06,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:06,534 INFO L481 AbstractCegarLoop]: Abstraction has 3154 states and 3930 transitions. [2020-12-22 07:18:06,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:18:06,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 3930 transitions. [2020-12-22 07:18:06,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-22 07:18:06,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:06,538 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:18:06,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-12-22 07:18:06,742 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:18:06,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:06,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1119716085, now seen corresponding path program 1 times [2020-12-22 07:18:06,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:06,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181399423] [2020-12-22 07:18:06,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:06,843 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-22 07:18:06,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181399423] [2020-12-22 07:18:06,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:18:06,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:18:06,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422541906] [2020-12-22 07:18:06,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:18:06,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:06,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:18:06,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:18:06,846 INFO L87 Difference]: Start difference. First operand 3154 states and 3930 transitions. Second operand 6 states. [2020-12-22 07:18:09,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:09,847 INFO L93 Difference]: Finished difference Result 14589 states and 18698 transitions. [2020-12-22 07:18:09,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 07:18:09,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2020-12-22 07:18:09,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:09,859 INFO L225 Difference]: With dead ends: 14589 [2020-12-22 07:18:09,859 INFO L226 Difference]: Without dead ends: 11718 [2020-12-22 07:18:09,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:18:09,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11718 states. [2020-12-22 07:18:10,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11718 to 3623. [2020-12-22 07:18:10,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3623 states. [2020-12-22 07:18:10,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 4465 transitions. [2020-12-22 07:18:10,653 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 4465 transitions. Word has length 150 [2020-12-22 07:18:10,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:10,654 INFO L481 AbstractCegarLoop]: Abstraction has 3623 states and 4465 transitions. [2020-12-22 07:18:10,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:18:10,654 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 4465 transitions. [2020-12-22 07:18:10,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 07:18:10,657 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:10,657 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:18:10,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-12-22 07:18:10,657 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:18:10,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:10,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1081689347, now seen corresponding path program 1 times [2020-12-22 07:18:10,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:10,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163440042] [2020-12-22 07:18:10,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:10,745 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 07:18:10,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163440042] [2020-12-22 07:18:10,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:18:10,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:18:10,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486029951] [2020-12-22 07:18:10,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:18:10,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:10,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:18:10,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:18:10,747 INFO L87 Difference]: Start difference. First operand 3623 states and 4465 transitions. Second operand 4 states. [2020-12-22 07:18:12,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:12,005 INFO L93 Difference]: Finished difference Result 8779 states and 10961 transitions. [2020-12-22 07:18:12,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:18:12,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-12-22 07:18:12,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:12,012 INFO L225 Difference]: With dead ends: 8779 [2020-12-22 07:18:12,012 INFO L226 Difference]: Without dead ends: 5439 [2020-12-22 07:18:12,016 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 07:18:12,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5439 states. [2020-12-22 07:18:12,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5439 to 4327. [2020-12-22 07:18:12,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4327 states. [2020-12-22 07:18:12,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4327 states to 4327 states and 5322 transitions. [2020-12-22 07:18:12,865 INFO L78 Accepts]: Start accepts. Automaton has 4327 states and 5322 transitions. Word has length 151 [2020-12-22 07:18:12,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:12,866 INFO L481 AbstractCegarLoop]: Abstraction has 4327 states and 5322 transitions. [2020-12-22 07:18:12,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:18:12,866 INFO L276 IsEmpty]: Start isEmpty. Operand 4327 states and 5322 transitions. [2020-12-22 07:18:12,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 07:18:12,869 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:12,869 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:18:12,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-12-22 07:18:12,870 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:18:12,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:12,870 INFO L82 PathProgramCache]: Analyzing trace with hash -562521166, now seen corresponding path program 1 times [2020-12-22 07:18:12,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:12,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66429519] [2020-12-22 07:18:12,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:13,027 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:13,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66429519] [2020-12-22 07:18:13,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365018025] [2020-12-22 07:18:13,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:18:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:13,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 07:18:13,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:18:13,474 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:13,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:18:13,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-12-22 07:18:13,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128283308] [2020-12-22 07:18:13,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:18:13,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:13,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:18:13,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:18:13,476 INFO L87 Difference]: Start difference. First operand 4327 states and 5322 transitions. Second operand 7 states. [2020-12-22 07:18:16,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:16,006 INFO L93 Difference]: Finished difference Result 15123 states and 19140 transitions. [2020-12-22 07:18:16,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 07:18:16,007 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-12-22 07:18:16,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:16,017 INFO L225 Difference]: With dead ends: 15123 [2020-12-22 07:18:16,018 INFO L226 Difference]: Without dead ends: 11079 [2020-12-22 07:18:16,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:18:16,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11079 states. [2020-12-22 07:18:17,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11079 to 6803. [2020-12-22 07:18:17,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6803 states. [2020-12-22 07:18:17,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6803 states to 6803 states and 8395 transitions. [2020-12-22 07:18:17,436 INFO L78 Accepts]: Start accepts. Automaton has 6803 states and 8395 transitions. Word has length 151 [2020-12-22 07:18:17,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:17,436 INFO L481 AbstractCegarLoop]: Abstraction has 6803 states and 8395 transitions. [2020-12-22 07:18:17,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:18:17,437 INFO L276 IsEmpty]: Start isEmpty. Operand 6803 states and 8395 transitions. [2020-12-22 07:18:17,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 07:18:17,441 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:17,442 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:18:17,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-12-22 07:18:17,652 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:18:17,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:17,653 INFO L82 PathProgramCache]: Analyzing trace with hash 397250477, now seen corresponding path program 1 times [2020-12-22 07:18:17,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:17,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688188510] [2020-12-22 07:18:17,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:17,855 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 26 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:17,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688188510] [2020-12-22 07:18:17,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968050289] [2020-12-22 07:18:17,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:18:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:18,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-22 07:18:18,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:18:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 35 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:18,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:18:18,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2020-12-22 07:18:18,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967307032] [2020-12-22 07:18:18,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 07:18:18,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:18,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 07:18:18,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:18:18,416 INFO L87 Difference]: Start difference. First operand 6803 states and 8395 transitions. Second operand 14 states. [2020-12-22 07:18:39,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:39,855 INFO L93 Difference]: Finished difference Result 35819 states and 45119 transitions. [2020-12-22 07:18:39,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 314 states. [2020-12-22 07:18:39,855 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 151 [2020-12-22 07:18:39,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:39,886 INFO L225 Difference]: With dead ends: 35819 [2020-12-22 07:18:39,886 INFO L226 Difference]: Without dead ends: 30457 [2020-12-22 07:18:39,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49817 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=12787, Invalid=92513, Unknown=0, NotChecked=0, Total=105300 [2020-12-22 07:18:39,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30457 states. [2020-12-22 07:18:42,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30457 to 10379. [2020-12-22 07:18:42,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10379 states. [2020-12-22 07:18:42,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10379 states to 10379 states and 12818 transitions. [2020-12-22 07:18:42,565 INFO L78 Accepts]: Start accepts. Automaton has 10379 states and 12818 transitions. Word has length 151 [2020-12-22 07:18:42,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:42,566 INFO L481 AbstractCegarLoop]: Abstraction has 10379 states and 12818 transitions. [2020-12-22 07:18:42,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 07:18:42,566 INFO L276 IsEmpty]: Start isEmpty. Operand 10379 states and 12818 transitions. [2020-12-22 07:18:42,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 07:18:42,572 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:42,572 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:18:42,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2020-12-22 07:18:42,773 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:18:42,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:42,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1443672678, now seen corresponding path program 1 times [2020-12-22 07:18:42,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:42,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432280561] [2020-12-22 07:18:42,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:43,028 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 21 [2020-12-22 07:18:43,086 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:43,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432280561] [2020-12-22 07:18:43,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755562560] [2020-12-22 07:18:43,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:18:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:43,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 07:18:43,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:18:43,419 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:18:43,669 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:43,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:18:43,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2020-12-22 07:18:43,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140854330] [2020-12-22 07:18:43,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 07:18:43,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:43,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 07:18:43,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:18:43,671 INFO L87 Difference]: Start difference. First operand 10379 states and 12818 transitions. Second operand 11 states. [2020-12-22 07:18:47,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:47,295 INFO L93 Difference]: Finished difference Result 20022 states and 25023 transitions. [2020-12-22 07:18:47,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 07:18:47,296 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 152 [2020-12-22 07:18:47,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:47,308 INFO L225 Difference]: With dead ends: 20022 [2020-12-22 07:18:47,308 INFO L226 Difference]: Without dead ends: 12749 [2020-12-22 07:18:47,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 146 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2020-12-22 07:18:47,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12749 states. [2020-12-22 07:18:49,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12749 to 10140. [2020-12-22 07:18:49,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10140 states. [2020-12-22 07:18:49,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10140 states to 10140 states and 12504 transitions. [2020-12-22 07:18:49,616 INFO L78 Accepts]: Start accepts. Automaton has 10140 states and 12504 transitions. Word has length 152 [2020-12-22 07:18:49,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:49,617 INFO L481 AbstractCegarLoop]: Abstraction has 10140 states and 12504 transitions. [2020-12-22 07:18:49,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 07:18:49,617 INFO L276 IsEmpty]: Start isEmpty. Operand 10140 states and 12504 transitions. [2020-12-22 07:18:49,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 07:18:49,623 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:49,624 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:18:49,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:18:49,839 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:18:49,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:49,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1461701721, now seen corresponding path program 1 times [2020-12-22 07:18:49,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:49,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770276847] [2020-12-22 07:18:49,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:49,897 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-12-22 07:18:49,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770276847] [2020-12-22 07:18:49,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:18:49,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:18:49,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598729977] [2020-12-22 07:18:49,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:18:49,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:49,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:18:49,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:18:49,899 INFO L87 Difference]: Start difference. First operand 10140 states and 12504 transitions. Second operand 4 states. [2020-12-22 07:18:51,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:51,487 INFO L93 Difference]: Finished difference Result 16181 states and 19958 transitions. [2020-12-22 07:18:51,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:18:51,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-12-22 07:18:51,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:51,495 INFO L225 Difference]: With dead ends: 16181 [2020-12-22 07:18:51,495 INFO L226 Difference]: Without dead ends: 6640 [2020-12-22 07:18:51,501 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 07:18:51,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6640 states. [2020-12-22 07:18:53,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6640 to 6620. [2020-12-22 07:18:53,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6620 states. [2020-12-22 07:18:53,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6620 states to 6620 states and 8094 transitions. [2020-12-22 07:18:53,027 INFO L78 Accepts]: Start accepts. Automaton has 6620 states and 8094 transitions. Word has length 153 [2020-12-22 07:18:53,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:53,028 INFO L481 AbstractCegarLoop]: Abstraction has 6620 states and 8094 transitions. [2020-12-22 07:18:53,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:18:53,028 INFO L276 IsEmpty]: Start isEmpty. Operand 6620 states and 8094 transitions. [2020-12-22 07:18:53,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 07:18:53,031 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:53,031 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:18:53,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-12-22 07:18:53,031 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:18:53,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:53,032 INFO L82 PathProgramCache]: Analyzing trace with hash -348202584, now seen corresponding path program 1 times [2020-12-22 07:18:53,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:53,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954855333] [2020-12-22 07:18:53,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:53,245 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:53,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954855333] [2020-12-22 07:18:53,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341095143] [2020-12-22 07:18:53,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:18:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:53,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:18:53,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:18:53,725 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:53,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:18:53,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2020-12-22 07:18:53,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955749447] [2020-12-22 07:18:53,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 07:18:53,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:53,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 07:18:53,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:18:53,726 INFO L87 Difference]: Start difference. First operand 6620 states and 8094 transitions. Second operand 13 states. [2020-12-22 07:19:09,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:19:09,230 INFO L93 Difference]: Finished difference Result 39008 states and 49329 transitions. [2020-12-22 07:19:09,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2020-12-22 07:19:09,231 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 154 [2020-12-22 07:19:09,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:19:09,263 INFO L225 Difference]: With dead ends: 39008 [2020-12-22 07:19:09,263 INFO L226 Difference]: Without dead ends: 33973 [2020-12-22 07:19:09,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7816 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2820, Invalid=16640, Unknown=0, NotChecked=0, Total=19460 [2020-12-22 07:19:09,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33973 states. [2020-12-22 07:19:11,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33973 to 7990. [2020-12-22 07:19:11,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7990 states. [2020-12-22 07:19:11,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7990 states to 7990 states and 9776 transitions. [2020-12-22 07:19:11,463 INFO L78 Accepts]: Start accepts. Automaton has 7990 states and 9776 transitions. Word has length 154 [2020-12-22 07:19:11,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:19:11,463 INFO L481 AbstractCegarLoop]: Abstraction has 7990 states and 9776 transitions. [2020-12-22 07:19:11,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 07:19:11,463 INFO L276 IsEmpty]: Start isEmpty. Operand 7990 states and 9776 transitions. [2020-12-22 07:19:11,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 07:19:11,465 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:19:11,466 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:19:11,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-12-22 07:19:11,667 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:19:11,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:19:11,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1265114848, now seen corresponding path program 1 times [2020-12-22 07:19:11,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:19:11,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686193333] [2020-12-22 07:19:11,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:19:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:11,937 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:11,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686193333] [2020-12-22 07:19:11,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057330948] [2020-12-22 07:19:11,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:19:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:12,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:19:12,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:19:12,489 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:12,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:19:12,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 16 [2020-12-22 07:19:12,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048989376] [2020-12-22 07:19:12,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 07:19:12,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:19:12,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 07:19:12,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-12-22 07:19:12,491 INFO L87 Difference]: Start difference. First operand 7990 states and 9776 transitions. Second operand 16 states. [2020-12-22 07:19:30,044 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-12-22 07:19:39,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:19:39,418 INFO L93 Difference]: Finished difference Result 33265 states and 41653 transitions. [2020-12-22 07:19:39,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2020-12-22 07:19:39,420 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 154 [2020-12-22 07:19:39,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:19:39,454 INFO L225 Difference]: With dead ends: 33265 [2020-12-22 07:19:39,455 INFO L226 Difference]: Without dead ends: 27154 [2020-12-22 07:19:39,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19727 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=6585, Invalid=42035, Unknown=0, NotChecked=0, Total=48620 [2020-12-22 07:19:39,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27154 states. [2020-12-22 07:19:41,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27154 to 7954. [2020-12-22 07:19:41,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7954 states. [2020-12-22 07:19:41,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7954 states to 7954 states and 9686 transitions. [2020-12-22 07:19:41,699 INFO L78 Accepts]: Start accepts. Automaton has 7954 states and 9686 transitions. Word has length 154 [2020-12-22 07:19:41,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:19:41,699 INFO L481 AbstractCegarLoop]: Abstraction has 7954 states and 9686 transitions. [2020-12-22 07:19:41,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 07:19:41,699 INFO L276 IsEmpty]: Start isEmpty. Operand 7954 states and 9686 transitions. [2020-12-22 07:19:41,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-22 07:19:41,703 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:19:41,703 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:19:41,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:19:41,911 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:19:41,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:19:41,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1007469032, now seen corresponding path program 1 times [2020-12-22 07:19:41,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:19:41,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665394976] [2020-12-22 07:19:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:19:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:42,142 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:42,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665394976] [2020-12-22 07:19:42,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530134422] [2020-12-22 07:19:42,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:19:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:42,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:19:42,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:19:42,634 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:42,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:19:42,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2020-12-22 07:19:42,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898664285] [2020-12-22 07:19:42,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:19:42,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:19:42,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:19:42,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:19:42,636 INFO L87 Difference]: Start difference. First operand 7954 states and 9686 transitions. Second operand 8 states. [2020-12-22 07:19:49,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:19:49,193 INFO L93 Difference]: Finished difference Result 24144 states and 30333 transitions. [2020-12-22 07:19:49,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 07:19:49,194 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 155 [2020-12-22 07:19:49,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:19:49,212 INFO L225 Difference]: With dead ends: 24144 [2020-12-22 07:19:49,212 INFO L226 Difference]: Without dead ends: 18506 [2020-12-22 07:19:49,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-12-22 07:19:49,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18506 states. [2020-12-22 07:19:51,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18506 to 7278. [2020-12-22 07:19:51,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7278 states. [2020-12-22 07:19:51,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7278 states to 7278 states and 8852 transitions. [2020-12-22 07:19:51,299 INFO L78 Accepts]: Start accepts. Automaton has 7278 states and 8852 transitions. Word has length 155 [2020-12-22 07:19:51,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:19:51,299 INFO L481 AbstractCegarLoop]: Abstraction has 7278 states and 8852 transitions. [2020-12-22 07:19:51,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:19:51,300 INFO L276 IsEmpty]: Start isEmpty. Operand 7278 states and 8852 transitions. [2020-12-22 07:19:51,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-22 07:19:51,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:19:51,302 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:19:51,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-12-22 07:19:51,503 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:19:51,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:19:51,504 INFO L82 PathProgramCache]: Analyzing trace with hash -359733026, now seen corresponding path program 1 times [2020-12-22 07:19:51,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:19:51,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864035246] [2020-12-22 07:19:51,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:19:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-22 07:19:51,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864035246] [2020-12-22 07:19:51,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:19:51,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:19:51,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613089131] [2020-12-22 07:19:51,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:19:51,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:19:51,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:19:51,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:19:51,568 INFO L87 Difference]: Start difference. First operand 7278 states and 8852 transitions. Second operand 4 states. [2020-12-22 07:19:53,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:19:53,327 INFO L93 Difference]: Finished difference Result 12907 states and 15741 transitions. [2020-12-22 07:19:53,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:19:53,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-12-22 07:19:53,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:19:53,334 INFO L225 Difference]: With dead ends: 12907 [2020-12-22 07:19:53,335 INFO L226 Difference]: Without dead ends: 6040 [2020-12-22 07:19:53,345 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 07:19:53,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6040 states. [2020-12-22 07:19:55,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6040 to 6040. [2020-12-22 07:19:55,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6040 states. [2020-12-22 07:19:55,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6040 states to 6040 states and 7332 transitions. [2020-12-22 07:19:55,035 INFO L78 Accepts]: Start accepts. Automaton has 6040 states and 7332 transitions. Word has length 155 [2020-12-22 07:19:55,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:19:55,035 INFO L481 AbstractCegarLoop]: Abstraction has 6040 states and 7332 transitions. [2020-12-22 07:19:55,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:19:55,035 INFO L276 IsEmpty]: Start isEmpty. Operand 6040 states and 7332 transitions. [2020-12-22 07:19:55,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-12-22 07:19:55,037 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:19:55,037 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:19:55,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-12-22 07:19:55,038 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:19:55,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:19:55,038 INFO L82 PathProgramCache]: Analyzing trace with hash 977958557, now seen corresponding path program 1 times [2020-12-22 07:19:55,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:19:55,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440844754] [2020-12-22 07:19:55,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:19:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:55,245 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:55,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440844754] [2020-12-22 07:19:55,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622072946] [2020-12-22 07:19:55,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:19:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:55,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 07:19:55,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:19:55,838 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:55,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:19:55,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 12 [2020-12-22 07:19:55,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993051003] [2020-12-22 07:19:55,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:19:55,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:19:55,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:19:55,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:19:55,840 INFO L87 Difference]: Start difference. First operand 6040 states and 7332 transitions. Second operand 9 states. [2020-12-22 07:19:58,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:19:58,865 INFO L93 Difference]: Finished difference Result 12041 states and 14694 transitions. [2020-12-22 07:19:58,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 07:19:58,866 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 156 [2020-12-22 07:19:58,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:19:58,873 INFO L225 Difference]: With dead ends: 12041 [2020-12-22 07:19:58,873 INFO L226 Difference]: Without dead ends: 6684 [2020-12-22 07:19:58,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-12-22 07:19:58,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6684 states. [2020-12-22 07:20:00,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6684 to 5582. [2020-12-22 07:20:00,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5582 states. [2020-12-22 07:20:00,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5582 states to 5582 states and 6769 transitions. [2020-12-22 07:20:00,488 INFO L78 Accepts]: Start accepts. Automaton has 5582 states and 6769 transitions. Word has length 156 [2020-12-22 07:20:00,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:20:00,488 INFO L481 AbstractCegarLoop]: Abstraction has 5582 states and 6769 transitions. [2020-12-22 07:20:00,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:20:00,488 INFO L276 IsEmpty]: Start isEmpty. Operand 5582 states and 6769 transitions. [2020-12-22 07:20:00,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 07:20:00,490 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:20:00,490 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:20:00,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-12-22 07:20:00,692 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:20:00,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:20:00,692 INFO L82 PathProgramCache]: Analyzing trace with hash 777084987, now seen corresponding path program 1 times [2020-12-22 07:20:00,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:20:00,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278510989] [2020-12-22 07:20:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:20:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:20:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 07:20:00,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278510989] [2020-12-22 07:20:00,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:20:00,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:20:00,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961011640] [2020-12-22 07:20:00,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:20:00,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:20:00,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:20:00,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:20:00,871 INFO L87 Difference]: Start difference. First operand 5582 states and 6769 transitions. Second operand 7 states. [2020-12-22 07:20:03,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:20:03,769 INFO L93 Difference]: Finished difference Result 12515 states and 15513 transitions. [2020-12-22 07:20:03,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:20:03,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-12-22 07:20:03,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:20:03,782 INFO L225 Difference]: With dead ends: 12515 [2020-12-22 07:20:03,782 INFO L226 Difference]: Without dead ends: 8448 [2020-12-22 07:20:03,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:20:03,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8448 states. [2020-12-22 07:20:05,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8448 to 5578. [2020-12-22 07:20:05,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5578 states. [2020-12-22 07:20:05,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5578 states to 5578 states and 6757 transitions. [2020-12-22 07:20:05,509 INFO L78 Accepts]: Start accepts. Automaton has 5578 states and 6757 transitions. Word has length 157 [2020-12-22 07:20:05,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:20:05,509 INFO L481 AbstractCegarLoop]: Abstraction has 5578 states and 6757 transitions. [2020-12-22 07:20:05,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:20:05,509 INFO L276 IsEmpty]: Start isEmpty. Operand 5578 states and 6757 transitions. [2020-12-22 07:20:05,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 07:20:05,511 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:20:05,511 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:20:05,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-12-22 07:20:05,511 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:20:05,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:20:05,512 INFO L82 PathProgramCache]: Analyzing trace with hash 263815105, now seen corresponding path program 1 times [2020-12-22 07:20:05,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:20:05,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141759706] [2020-12-22 07:20:05,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:20:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:20:05,695 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 36 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:20:05,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141759706] [2020-12-22 07:20:05,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891813356] [2020-12-22 07:20:05,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:20:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:20:05,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 07:20:05,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:20:06,153 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:20:06,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:20:06,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2020-12-22 07:20:06,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003076093] [2020-12-22 07:20:06,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:20:06,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:20:06,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:20:06,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-12-22 07:20:06,155 INFO L87 Difference]: Start difference. First operand 5578 states and 6757 transitions. Second operand 6 states. [2020-12-22 07:20:09,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:20:09,875 INFO L93 Difference]: Finished difference Result 15882 states and 19686 transitions. [2020-12-22 07:20:09,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:20:09,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-12-22 07:20:09,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:20:09,885 INFO L225 Difference]: With dead ends: 15882 [2020-12-22 07:20:09,885 INFO L226 Difference]: Without dead ends: 11200 [2020-12-22 07:20:09,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-12-22 07:20:09,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11200 states. [2020-12-22 07:20:11,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11200 to 5575. [2020-12-22 07:20:11,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5575 states. [2020-12-22 07:20:11,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5575 states to 5575 states and 6738 transitions. [2020-12-22 07:20:11,507 INFO L78 Accepts]: Start accepts. Automaton has 5575 states and 6738 transitions. Word has length 157 [2020-12-22 07:20:11,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:20:11,507 INFO L481 AbstractCegarLoop]: Abstraction has 5575 states and 6738 transitions. [2020-12-22 07:20:11,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:20:11,507 INFO L276 IsEmpty]: Start isEmpty. Operand 5575 states and 6738 transitions. [2020-12-22 07:20:11,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-12-22 07:20:11,509 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:20:11,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:20:11,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-12-22 07:20:11,711 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:20:11,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:20:11,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1573864336, now seen corresponding path program 1 times [2020-12-22 07:20:11,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:20:11,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337603511] [2020-12-22 07:20:11,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:20:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:20:11,931 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 07:20:11,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337603511] [2020-12-22 07:20:11,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966246909] [2020-12-22 07:20:11,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:20:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:20:12,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 07:20:12,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:20:12,762 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:20:12,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:20:12,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 18 [2020-12-22 07:20:12,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060846796] [2020-12-22 07:20:12,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 07:20:12,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:20:12,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 07:20:12,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-12-22 07:20:12,764 INFO L87 Difference]: Start difference. First operand 5575 states and 6738 transitions. Second operand 18 states. [2020-12-22 07:20:18,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:20:18,152 INFO L93 Difference]: Finished difference Result 16266 states and 20045 transitions. [2020-12-22 07:20:18,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-12-22 07:20:18,153 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 158 [2020-12-22 07:20:18,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:20:18,169 INFO L225 Difference]: With dead ends: 16266 [2020-12-22 07:20:18,169 INFO L226 Difference]: Without dead ends: 12188 [2020-12-22 07:20:18,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=523, Invalid=2339, Unknown=0, NotChecked=0, Total=2862 [2020-12-22 07:20:18,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12188 states. [2020-12-22 07:20:20,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12188 to 7230. [2020-12-22 07:20:20,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7230 states. [2020-12-22 07:20:20,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7230 states to 7230 states and 8716 transitions. [2020-12-22 07:20:20,342 INFO L78 Accepts]: Start accepts. Automaton has 7230 states and 8716 transitions. Word has length 158 [2020-12-22 07:20:20,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:20:20,343 INFO L481 AbstractCegarLoop]: Abstraction has 7230 states and 8716 transitions. [2020-12-22 07:20:20,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 07:20:20,343 INFO L276 IsEmpty]: Start isEmpty. Operand 7230 states and 8716 transitions. [2020-12-22 07:20:20,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 07:20:20,346 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:20:20,346 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:20:20,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2020-12-22 07:20:20,560 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:20:20,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:20:20,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1989518144, now seen corresponding path program 1 times [2020-12-22 07:20:20,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:20:20,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136301158] [2020-12-22 07:20:20,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:20:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:20:20,817 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 14 [2020-12-22 07:20:20,893 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:20:20,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136301158] [2020-12-22 07:20:20,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405461768] [2020-12-22 07:20:20,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:20:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:20:21,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 07:20:21,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:20:21,575 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:20:21,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:20:21,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 17 [2020-12-22 07:20:21,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754944883] [2020-12-22 07:20:21,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 07:20:21,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:20:21,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 07:20:21,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:20:21,577 INFO L87 Difference]: Start difference. First operand 7230 states and 8716 transitions. Second operand 11 states. [2020-12-22 07:20:24,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:20:24,997 INFO L93 Difference]: Finished difference Result 14316 states and 17431 transitions. [2020-12-22 07:20:24,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 07:20:24,997 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 161 [2020-12-22 07:20:24,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:20:25,005 INFO L225 Difference]: With dead ends: 14316 [2020-12-22 07:20:25,005 INFO L226 Difference]: Without dead ends: 8896 [2020-12-22 07:20:25,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2020-12-22 07:20:25,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8896 states. [2020-12-22 07:20:27,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8896 to 7233. [2020-12-22 07:20:27,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7233 states. [2020-12-22 07:20:27,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7233 states to 7233 states and 8714 transitions. [2020-12-22 07:20:27,080 INFO L78 Accepts]: Start accepts. Automaton has 7233 states and 8714 transitions. Word has length 161 [2020-12-22 07:20:27,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:20:27,081 INFO L481 AbstractCegarLoop]: Abstraction has 7233 states and 8714 transitions. [2020-12-22 07:20:27,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 07:20:27,081 INFO L276 IsEmpty]: Start isEmpty. Operand 7233 states and 8714 transitions. [2020-12-22 07:20:27,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 07:20:27,083 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:20:27,084 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 07:20:27,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:20:27,285 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:20:27,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:20:27,285 INFO L82 PathProgramCache]: Analyzing trace with hash 602732734, now seen corresponding path program 1 times [2020-12-22 07:20:27,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:20:27,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478117938] [2020-12-22 07:20:27,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:20:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:20:27,564 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 14 [2020-12-22 07:20:27,710 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:20:27,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478117938] [2020-12-22 07:20:27,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527299271] [2020-12-22 07:20:27,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:20:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:20:27,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 07:20:27,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:20:28,338 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:20:28,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:20:28,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-12-22 07:20:28,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211120156] [2020-12-22 07:20:28,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:20:28,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:20:28,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:20:28,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:20:28,340 INFO L87 Difference]: Start difference. First operand 7233 states and 8714 transitions. Second operand 10 states.