/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:51:37,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:51:37,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:51:37,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-21 22:51:37,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:51:37,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:51:37,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:51:37,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:51:37,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:51:37,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:51:37,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:51:37,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:51:37,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:51:37,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:51:37,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:51:37,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:51:37,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:51:37,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:51:37,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:51:37,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:51:37,997 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 22:51:38,011 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:51:38,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:51:38,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:51:38,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:51:38,013 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:51:38,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:51:38,013 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:51:38,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:51:38,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:51:38,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:51:38,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:51:38,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:51:38,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:51:38,015 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:51:38,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:51:38,015 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:51:38,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:51:38,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:51:38,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:51:38,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:51:38,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:51:38,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:51:38,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:51:38,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:51:38,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:51:38,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:51:38,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:38,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:51:38,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:51:38,018 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 22:51:38,299 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:51:38,316 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:51:38,319 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:51:38,321 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:51:38,321 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:51:38,322 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-07-21 22:51:38,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5dc19f31/88a20aa2fd2f44aeaa6a8ff0bd91a819/FLAGa77b78f0a [2020-07-21 22:51:38,920 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:51:38,921 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-07-21 22:51:38,933 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5dc19f31/88a20aa2fd2f44aeaa6a8ff0bd91a819/FLAGa77b78f0a [2020-07-21 22:51:39,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5dc19f31/88a20aa2fd2f44aeaa6a8ff0bd91a819 [2020-07-21 22:51:39,206 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:51:39,208 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:51:39,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:51:39,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:51:39,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:51:39,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:51:39" (1/1) ... [2020-07-21 22:51:39,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46aae693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:51:39, skipping insertion in model container [2020-07-21 22:51:39,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:51:39" (1/1) ... [2020-07-21 22:51:39,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:51:39,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:51:39,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:51:39,660 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:51:39,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:51:39,968 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:51:39,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:51:39 WrapperNode [2020-07-21 22:51:39,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:51:39,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:51:39,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:51:39,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:51:39,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:51:39" (1/1) ... [2020-07-21 22:51:39,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:51:39" (1/1) ... [2020-07-21 22:51:40,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:51:39" (1/1) ... [2020-07-21 22:51:40,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:51:39" (1/1) ... [2020-07-21 22:51:40,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:51:39" (1/1) ... [2020-07-21 22:51:40,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:51:39" (1/1) ... [2020-07-21 22:51:40,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:51:39" (1/1) ... [2020-07-21 22:51:40,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:51:40,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:51:40,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:51:40,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:51:40,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:51:39" (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 [2020-07-21 22:51:40,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:51:40,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:51:40,159 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 22:51:40,159 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:51:40,160 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 22:51:40,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:51:40,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 22:51:40,161 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 22:51:40,161 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:51:40,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:51:40,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:51:41,339 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:51:41,339 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 22:51:41,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:51:41 BoogieIcfgContainer [2020-07-21 22:51:41,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:51:41,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:51:41,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:51:41,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:51:41,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:51:39" (1/3) ... [2020-07-21 22:51:41,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b4860b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:51:41, skipping insertion in model container [2020-07-21 22:51:41,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:51:39" (2/3) ... [2020-07-21 22:51:41,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b4860b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:51:41, skipping insertion in model container [2020-07-21 22:51:41,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:51:41" (3/3) ... [2020-07-21 22:51:41,364 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label42.c [2020-07-21 22:51:41,375 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:51:41,386 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:51:41,400 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:51:41,431 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:51:41,432 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:51:41,432 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:51:41,432 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:51:41,433 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:51:41,433 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:51:41,433 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:51:41,433 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:51:41,459 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 22:51:41,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-07-21 22:51:41,472 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:41,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:51:41,474 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:41,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:41,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1328102103, now seen corresponding path program 1 times [2020-07-21 22:51:41,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:41,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94234635] [2020-07-21 22:51:41,490 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:41,693 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:51:41,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:41,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-21 22:51:41,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:42,052 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-07-21 22:51:42,196 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2020-07-21 22:51:42,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:51:42,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:51:42,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94234635] [2020-07-21 22:51:42,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:51:42,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-21 22:51:42,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737929279] [2020-07-21 22:51:42,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 22:51:42,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:42,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 22:51:42,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 22:51:42,632 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 11 states. [2020-07-21 22:51:44,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:44,286 INFO L93 Difference]: Finished difference Result 472 states and 791 transitions. [2020-07-21 22:51:44,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:51:44,288 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 121 [2020-07-21 22:51:44,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:44,309 INFO L225 Difference]: With dead ends: 472 [2020-07-21 22:51:44,310 INFO L226 Difference]: Without dead ends: 203 [2020-07-21 22:51:44,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-07-21 22:51:44,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-21 22:51:44,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-07-21 22:51:44,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-21 22:51:44,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 275 transitions. [2020-07-21 22:51:44,381 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 275 transitions. Word has length 121 [2020-07-21 22:51:44,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:44,382 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 275 transitions. [2020-07-21 22:51:44,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 22:51:44,382 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 275 transitions. [2020-07-21 22:51:44,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-07-21 22:51:44,386 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:44,387 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:51:44,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:44,602 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:44,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:44,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1343862876, now seen corresponding path program 1 times [2020-07-21 22:51:44,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:44,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581769617] [2020-07-21 22:51:44,604 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:44,715 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:51:44,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:44,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-21 22:51:44,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:45,026 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2020-07-21 22:51:45,386 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:51:45,389 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-07-21 22:51:45,389 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 2 disjuncts [2020-07-21 22:51:45,479 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:51:45,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:51:46,158 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-07-21 22:51:46,430 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 22:51:46,560 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-07-21 22:51:46,565 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 7 conjuncts [2020-07-21 22:51:46,566 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 6 conjuncts [2020-07-21 22:51:46,568 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 22:51:46,569 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 22:51:46,570 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:51:46,571 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 22:51:46,575 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 22:51:46,576 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 22:51:46,577 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:51:46,585 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:51:46,586 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:51:46,588 INFO L501 QuantifierPusher]: Distributing 14 disjuncts over 3 conjuncts [2020-07-21 22:51:46,589 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:51:46,590 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:51:46,591 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:51:46,595 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:51:46,595 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:51:46,597 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:51:46,598 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:51:46,599 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:51:46,600 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:51:46,606 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:51:46,606 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:51:46,610 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:51:46,611 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:51:47,167 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 37 [2020-07-21 22:51:47,171 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 8, 6, 7, 1] term [2020-07-21 22:51:47,171 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 22:51:47,234 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:51:47,235 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:47,296 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:47,327 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:47,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:51:47,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581769617] [2020-07-21 22:51:47,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:51:47,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2020-07-21 22:51:47,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071977594] [2020-07-21 22:51:47,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 22:51:47,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:47,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 22:51:47,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-07-21 22:51:47,515 INFO L87 Difference]: Start difference. First operand 203 states and 275 transitions. Second operand 25 states. [2020-07-21 22:51:48,409 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-21 22:51:49,139 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-07-21 22:51:49,568 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 22:51:49,766 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-07-21 22:51:50,157 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-07-21 22:51:52,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:52,053 INFO L93 Difference]: Finished difference Result 590 states and 879 transitions. [2020-07-21 22:51:52,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-21 22:51:52,054 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 129 [2020-07-21 22:51:52,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:52,065 INFO L225 Difference]: With dead ends: 590 [2020-07-21 22:51:52,065 INFO L226 Difference]: Without dead ends: 453 [2020-07-21 22:51:52,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 230 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=551, Invalid=1611, Unknown=0, NotChecked=0, Total=2162 [2020-07-21 22:51:52,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-07-21 22:51:52,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 417. [2020-07-21 22:51:52,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-21 22:51:52,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 549 transitions. [2020-07-21 22:51:52,116 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 549 transitions. Word has length 129 [2020-07-21 22:51:52,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:52,116 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 549 transitions. [2020-07-21 22:51:52,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 22:51:52,117 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 549 transitions. [2020-07-21 22:51:52,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-07-21 22:51:52,127 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:52,128 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:51:52,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:52,329 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:52,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:52,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1456847330, now seen corresponding path program 1 times [2020-07-21 22:51:52,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:52,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869815539] [2020-07-21 22:51:52,331 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:52,449 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:51:52,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:52,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:51:52,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:52,544 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:51:52,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:51:52,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869815539] [2020-07-21 22:51:52,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:51:52,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:51:52,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936994728] [2020-07-21 22:51:52,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:51:52,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:52,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:51:52,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:51:52,548 INFO L87 Difference]: Start difference. First operand 417 states and 549 transitions. Second operand 3 states. [2020-07-21 22:51:53,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:53,042 INFO L93 Difference]: Finished difference Result 1042 states and 1436 transitions. [2020-07-21 22:51:53,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:51:53,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-07-21 22:51:53,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:53,048 INFO L225 Difference]: With dead ends: 1042 [2020-07-21 22:51:53,048 INFO L226 Difference]: Without dead ends: 691 [2020-07-21 22:51:53,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:51:53,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-07-21 22:51:53,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2020-07-21 22:51:53,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-07-21 22:51:53,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 898 transitions. [2020-07-21 22:51:53,084 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 898 transitions. Word has length 132 [2020-07-21 22:51:53,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:53,085 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 898 transitions. [2020-07-21 22:51:53,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:51:53,085 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 898 transitions. [2020-07-21 22:51:53,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-07-21 22:51:53,089 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:53,089 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:51:53,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:53,305 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:53,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:53,306 INFO L82 PathProgramCache]: Analyzing trace with hash -590467853, now seen corresponding path program 1 times [2020-07-21 22:51:53,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:53,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974067338] [2020-07-21 22:51:53,307 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:53,400 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 22:51:53,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:53,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 22:51:53,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:53,442 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:51:53,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:51:53,485 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:51:53,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974067338] [2020-07-21 22:51:53,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:51:53,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 22:51:53,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341233629] [2020-07-21 22:51:53,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 22:51:53,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:53,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 22:51:53,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 22:51:53,487 INFO L87 Difference]: Start difference. First operand 691 states and 898 transitions. Second operand 6 states. [2020-07-21 22:51:54,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:54,258 INFO L93 Difference]: Finished difference Result 1620 states and 2190 transitions. [2020-07-21 22:51:54,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:51:54,259 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2020-07-21 22:51:54,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:54,270 INFO L225 Difference]: With dead ends: 1620 [2020-07-21 22:51:54,270 INFO L226 Difference]: Without dead ends: 995 [2020-07-21 22:51:54,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-21 22:51:54,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2020-07-21 22:51:54,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 973. [2020-07-21 22:51:54,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-07-21 22:51:54,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1268 transitions. [2020-07-21 22:51:54,330 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1268 transitions. Word has length 141 [2020-07-21 22:51:54,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:54,331 INFO L479 AbstractCegarLoop]: Abstraction has 973 states and 1268 transitions. [2020-07-21 22:51:54,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 22:51:54,335 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1268 transitions. [2020-07-21 22:51:54,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-07-21 22:51:54,340 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:54,341 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:51:54,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:54,555 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:54,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:54,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1382850431, now seen corresponding path program 1 times [2020-07-21 22:51:54,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:54,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686621777] [2020-07-21 22:51:54,557 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:54,647 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 22:51:54,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:54,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:51:54,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:54,702 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:51:54,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:51:54,903 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 22:51:54,949 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 22:51:54,950 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:51:54,950 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:51:54,951 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:54,952 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 2, 1] term [2020-07-21 22:51:54,952 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:54,953 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:51:54,954 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:54,955 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:51:54,955 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:54,956 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:54,957 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:51:55,070 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:51:55,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686621777] [2020-07-21 22:51:55,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:51:55,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:51:55,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004046719] [2020-07-21 22:51:55,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:51:55,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:55,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:51:55,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:51:55,072 INFO L87 Difference]: Start difference. First operand 973 states and 1268 transitions. Second operand 7 states. [2020-07-21 22:51:56,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:51:56,267 INFO L93 Difference]: Finished difference Result 2491 states and 3253 transitions. [2020-07-21 22:51:56,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:51:56,268 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2020-07-21 22:51:56,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:51:56,274 INFO L225 Difference]: With dead ends: 2491 [2020-07-21 22:51:56,274 INFO L226 Difference]: Without dead ends: 1304 [2020-07-21 22:51:56,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 290 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 22:51:56,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2020-07-21 22:51:56,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1241. [2020-07-21 22:51:56,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2020-07-21 22:51:56,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1468 transitions. [2020-07-21 22:51:56,319 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1468 transitions. Word has length 147 [2020-07-21 22:51:56,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:51:56,320 INFO L479 AbstractCegarLoop]: Abstraction has 1241 states and 1468 transitions. [2020-07-21 22:51:56,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:51:56,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1468 transitions. [2020-07-21 22:51:56,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-07-21 22:51:56,324 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:51:56,324 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, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:51:56,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:56,539 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:51:56,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:51:56,540 INFO L82 PathProgramCache]: Analyzing trace with hash 2050643098, now seen corresponding path program 1 times [2020-07-21 22:51:56,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:51:56,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683585632] [2020-07-21 22:51:56,542 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:51:56,643 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:51:56,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:51:56,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 71 conjunts are in the unsatisfiable core [2020-07-21 22:51:56,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:51:57,278 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:51:57,279 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-07-21 22:51:57,279 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 2 disjuncts [2020-07-21 22:51:57,384 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:51:57,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:51:58,084 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 7 conjuncts [2020-07-21 22:51:58,085 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 6 conjuncts [2020-07-21 22:51:58,087 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 22:51:58,088 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 4 conjuncts [2020-07-21 22:51:58,089 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 3 conjuncts [2020-07-21 22:51:58,090 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 22:51:58,096 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 22:51:58,100 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 22:51:58,101 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 22:51:58,102 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 22:51:58,103 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 22:51:58,104 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 22:51:58,112 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 22:51:58,116 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:51:58,116 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:51:58,118 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 22:51:58,120 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:51:58,121 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:51:58,122 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 22:51:58,123 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 22:51:58,124 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 22:51:58,126 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:51:58,131 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:51:58,132 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 22:51:58,133 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 22:51:58,134 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:51:58,135 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:51:58,140 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 22:51:58,140 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 22:51:58,141 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 22:51:58,142 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 22:51:58,143 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:51:58,144 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:51:58,146 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 22:51:58,146 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:51:58,147 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:51:58,148 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 22:51:58,149 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:51:58,150 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:51:58,152 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 22:51:58,153 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 22:51:58,159 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 22:51:58,161 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 22:51:58,164 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 22:51:58,167 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:51:58,168 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:51:58,170 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 22:51:58,170 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:51:58,171 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:51:58,177 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 22:51:58,178 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:51:58,178 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:51:58,180 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 22:51:58,180 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:51:58,181 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:51:58,183 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 22:51:58,184 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 22:51:58,184 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 22:51:58,185 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 22:51:58,186 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 22:51:58,187 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 22:51:58,187 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:51:58,188 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:51:58,189 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 22:51:58,190 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:51:58,190 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:51:58,192 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 22:51:58,192 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:51:58,193 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:51:58,194 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 22:51:58,195 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:51:58,195 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:51:58,197 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 22:51:58,197 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:51:58,198 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:51:59,081 WARN L193 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 38 [2020-07-21 22:51:59,084 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 8, 6, 1] term [2020-07-21 22:51:59,084 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 22:51:59,175 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 22:51:59,177 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 22:51:59,258 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 22:51:59,304 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 22:51:59,481 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:51:59,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683585632] [2020-07-21 22:51:59,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:51:59,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2020-07-21 22:51:59,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236131558] [2020-07-21 22:51:59,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 22:51:59,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:51:59,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 22:51:59,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-07-21 22:51:59,484 INFO L87 Difference]: Start difference. First operand 1241 states and 1468 transitions. Second operand 25 states. [2020-07-21 22:52:01,383 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-07-21 22:52:01,659 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-07-21 22:52:02,052 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-07-21 22:52:02,400 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-07-21 22:52:02,625 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-07-21 22:52:02,850 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2020-07-21 22:52:03,099 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-07-21 22:52:03,484 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-07-21 22:52:03,722 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-07-21 22:52:04,073 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-07-21 22:52:04,335 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-07-21 22:52:04,756 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-07-21 22:52:06,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:52:06,032 INFO L93 Difference]: Finished difference Result 2709 states and 3267 transitions. [2020-07-21 22:52:06,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-21 22:52:06,040 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 162 [2020-07-21 22:52:06,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:52:06,049 INFO L225 Difference]: With dead ends: 2709 [2020-07-21 22:52:06,049 INFO L226 Difference]: Without dead ends: 1500 [2020-07-21 22:52:06,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 298 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=651, Invalid=1899, Unknown=0, NotChecked=0, Total=2550 [2020-07-21 22:52:06,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2020-07-21 22:52:06,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1433. [2020-07-21 22:52:06,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1433 states. [2020-07-21 22:52:06,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1679 transitions. [2020-07-21 22:52:06,097 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1679 transitions. Word has length 162 [2020-07-21 22:52:06,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:52:06,097 INFO L479 AbstractCegarLoop]: Abstraction has 1433 states and 1679 transitions. [2020-07-21 22:52:06,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 22:52:06,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1679 transitions. [2020-07-21 22:52:06,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-07-21 22:52:06,102 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:52:06,102 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 22:52:06,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:52:06,316 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:52:06,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:52:06,317 INFO L82 PathProgramCache]: Analyzing trace with hash 57081525, now seen corresponding path program 1 times [2020-07-21 22:52:06,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:52:06,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037960745] [2020-07-21 22:52:06,318 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:52:06,421 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:52:06,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:52:06,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 60 conjunts are in the unsatisfiable core [2020-07-21 22:52:06,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:52:07,122 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:52:07,123 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:52:07,124 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 3, 1] term [2020-07-21 22:52:07,124 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 2 disjuncts [2020-07-21 22:52:07,316 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:52:07,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:52:08,077 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-07-21 22:52:08,195 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-07-21 22:52:08,197 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 7 conjuncts [2020-07-21 22:52:08,198 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 6 conjuncts [2020-07-21 22:52:08,199 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 22:52:08,200 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 22:52:08,200 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:52:08,201 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 22:52:08,204 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 22:52:08,205 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 22:52:08,205 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 22:52:08,206 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 22:52:08,207 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 22:52:08,207 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 22:52:08,210 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 22:52:08,210 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 22:52:08,211 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 22:52:08,212 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 22:52:08,212 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 22:52:08,213 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 22:52:08,244 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 8, 6, 1] term [2020-07-21 22:52:08,244 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 22:52:08,290 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:52:08,291 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:52:08,292 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:52:08,370 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 22:52:08,485 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:52:08,486 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:08,552 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:08,582 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:08,897 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:52:08,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037960745] [2020-07-21 22:52:08,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:52:08,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 28 [2020-07-21 22:52:08,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197029893] [2020-07-21 22:52:08,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-21 22:52:08,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:52:08,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-21 22:52:08,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2020-07-21 22:52:08,903 INFO L87 Difference]: Start difference. First operand 1433 states and 1679 transitions. Second operand 28 states. [2020-07-21 22:52:12,869 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-07-21 22:52:13,083 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-07-21 22:52:15,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:52:15,642 INFO L93 Difference]: Finished difference Result 3134 states and 3941 transitions. [2020-07-21 22:52:15,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-07-21 22:52:15,642 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 179 [2020-07-21 22:52:15,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:52:15,654 INFO L225 Difference]: With dead ends: 3134 [2020-07-21 22:52:15,654 INFO L226 Difference]: Without dead ends: 1947 [2020-07-21 22:52:15,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 328 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=936, Invalid=2604, Unknown=0, NotChecked=0, Total=3540 [2020-07-21 22:52:15,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2020-07-21 22:52:15,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1370. [2020-07-21 22:52:15,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1370 states. [2020-07-21 22:52:15,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1573 transitions. [2020-07-21 22:52:15,713 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1573 transitions. Word has length 179 [2020-07-21 22:52:15,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:52:15,714 INFO L479 AbstractCegarLoop]: Abstraction has 1370 states and 1573 transitions. [2020-07-21 22:52:15,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-21 22:52:15,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1573 transitions. [2020-07-21 22:52:15,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-07-21 22:52:15,719 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:52:15,719 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 22:52:15,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:52:15,935 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:52:15,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:52:15,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1301752406, now seen corresponding path program 1 times [2020-07-21 22:52:15,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:52:15,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205705894] [2020-07-21 22:52:15,936 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:52:16,050 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:52:16,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:52:16,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 22:52:16,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:52:16,106 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 22:52:16,107 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:52:16,183 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 137 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:52:16,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:52:16,385 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 22:52:16,433 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:16,434 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:16,434 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 22:52:16,435 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:16,435 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:52:16,436 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:16,436 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:16,437 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:16,437 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:16,476 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:52:16,542 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:16,569 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:16,687 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 124 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:52:16,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205705894] [2020-07-21 22:52:16,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:52:16,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-07-21 22:52:16,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870130911] [2020-07-21 22:52:16,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 22:52:16,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:52:16,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 22:52:16,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:52:16,695 INFO L87 Difference]: Start difference. First operand 1370 states and 1573 transitions. Second operand 12 states. [2020-07-21 22:52:18,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:52:18,729 INFO L93 Difference]: Finished difference Result 2853 states and 3389 transitions. [2020-07-21 22:52:18,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-21 22:52:18,729 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 210 [2020-07-21 22:52:18,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:52:18,737 INFO L225 Difference]: With dead ends: 2853 [2020-07-21 22:52:18,737 INFO L226 Difference]: Without dead ends: 1731 [2020-07-21 22:52:18,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 415 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2020-07-21 22:52:18,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2020-07-21 22:52:18,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1648. [2020-07-21 22:52:18,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1648 states. [2020-07-21 22:52:18,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 1902 transitions. [2020-07-21 22:52:18,784 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 1902 transitions. Word has length 210 [2020-07-21 22:52:18,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:52:18,784 INFO L479 AbstractCegarLoop]: Abstraction has 1648 states and 1902 transitions. [2020-07-21 22:52:18,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 22:52:18,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 1902 transitions. [2020-07-21 22:52:18,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-07-21 22:52:18,790 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:52:18,790 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 22:52:19,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:52:19,005 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:52:19,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:52:19,005 INFO L82 PathProgramCache]: Analyzing trace with hash 565688508, now seen corresponding path program 1 times [2020-07-21 22:52:19,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:52:19,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057763757] [2020-07-21 22:52:19,007 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:52:19,137 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:52:19,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:52:19,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:52:19,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:52:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-07-21 22:52:19,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:52:19,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057763757] [2020-07-21 22:52:19,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:52:19,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:52:19,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662742893] [2020-07-21 22:52:19,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:52:19,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:52:19,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:52:19,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:52:19,193 INFO L87 Difference]: Start difference. First operand 1648 states and 1902 transitions. Second operand 3 states. [2020-07-21 22:52:19,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:52:19,722 INFO L93 Difference]: Finished difference Result 2196 states and 2552 transitions. [2020-07-21 22:52:19,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:52:19,722 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-07-21 22:52:19,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:52:19,731 INFO L225 Difference]: With dead ends: 2196 [2020-07-21 22:52:19,731 INFO L226 Difference]: Without dead ends: 2194 [2020-07-21 22:52:19,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:52:19,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states. [2020-07-21 22:52:19,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2194 to 1920. [2020-07-21 22:52:19,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-07-21 22:52:19,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2240 transitions. [2020-07-21 22:52:19,791 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2240 transitions. Word has length 211 [2020-07-21 22:52:19,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:52:19,792 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 2240 transitions. [2020-07-21 22:52:19,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:52:19,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2240 transitions. [2020-07-21 22:52:19,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-07-21 22:52:19,798 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:52:19,798 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 22:52:20,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:52:20,015 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:52:20,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:52:20,015 INFO L82 PathProgramCache]: Analyzing trace with hash 379150271, now seen corresponding path program 1 times [2020-07-21 22:52:20,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:52:20,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142438884] [2020-07-21 22:52:20,016 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:52:20,122 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:52:20,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:52:20,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:52:20,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:52:20,183 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-07-21 22:52:20,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:52:20,401 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-07-21 22:52:20,452 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:52:20,453 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:20,453 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:20,454 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:20,454 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 22:52:20,455 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:52:20,455 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:52:20,455 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:20,455 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:20,583 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-07-21 22:52:20,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142438884] [2020-07-21 22:52:20,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:52:20,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:52:20,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414522136] [2020-07-21 22:52:20,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:52:20,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:52:20,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:52:20,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:52:20,585 INFO L87 Difference]: Start difference. First operand 1920 states and 2240 transitions. Second operand 7 states. [2020-07-21 22:52:21,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:52:21,682 INFO L93 Difference]: Finished difference Result 4575 states and 5437 transitions. [2020-07-21 22:52:21,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:52:21,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-07-21 22:52:21,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:52:21,693 INFO L225 Difference]: With dead ends: 4575 [2020-07-21 22:52:21,693 INFO L226 Difference]: Without dead ends: 2903 [2020-07-21 22:52:21,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 456 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:52:21,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2020-07-21 22:52:21,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 2486. [2020-07-21 22:52:21,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2486 states. [2020-07-21 22:52:21,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 2845 transitions. [2020-07-21 22:52:21,750 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 2845 transitions. Word has length 229 [2020-07-21 22:52:21,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:52:21,751 INFO L479 AbstractCegarLoop]: Abstraction has 2486 states and 2845 transitions. [2020-07-21 22:52:21,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:52:21,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 2845 transitions. [2020-07-21 22:52:21,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-07-21 22:52:21,758 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:52:21,758 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 22:52:21,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:52:21,972 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:52:21,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:52:21,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1747340190, now seen corresponding path program 1 times [2020-07-21 22:52:21,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:52:21,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181981389] [2020-07-21 22:52:21,974 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:52:22,096 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:52:22,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:52:22,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 22:52:22,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:52:22,123 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 22:52:22,124 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:52:22,178 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-07-21 22:52:22,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:52:22,403 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 22:52:22,455 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:22,456 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:22,456 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:22,456 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:22,457 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:52:22,457 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:22,457 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:22,458 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:22,458 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:52:22,459 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:52:22,483 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:52:22,574 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-07-21 22:52:22,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181981389] [2020-07-21 22:52:22,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:52:22,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:52:22,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86543861] [2020-07-21 22:52:22,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:52:22,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:52:22,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:52:22,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:52:22,576 INFO L87 Difference]: Start difference. First operand 2486 states and 2845 transitions. Second operand 7 states. [2020-07-21 22:52:23,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:52:23,814 INFO L93 Difference]: Finished difference Result 5707 states and 6636 transitions. [2020-07-21 22:52:23,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:52:23,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2020-07-21 22:52:23,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:52:23,827 INFO L225 Difference]: With dead ends: 5707 [2020-07-21 22:52:23,827 INFO L226 Difference]: Without dead ends: 3469 [2020-07-21 22:52:23,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 498 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:52:23,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3469 states. [2020-07-21 22:52:23,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3469 to 3463. [2020-07-21 22:52:23,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3463 states. [2020-07-21 22:52:23,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3463 states to 3463 states and 3948 transitions. [2020-07-21 22:52:23,902 INFO L78 Accepts]: Start accepts. Automaton has 3463 states and 3948 transitions. Word has length 250 [2020-07-21 22:52:23,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:52:23,902 INFO L479 AbstractCegarLoop]: Abstraction has 3463 states and 3948 transitions. [2020-07-21 22:52:23,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:52:23,902 INFO L276 IsEmpty]: Start isEmpty. Operand 3463 states and 3948 transitions. [2020-07-21 22:52:23,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-07-21 22:52:23,912 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:52:23,912 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 22:52:24,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:52:24,127 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:52:24,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:52:24,128 INFO L82 PathProgramCache]: Analyzing trace with hash -474457533, now seen corresponding path program 1 times [2020-07-21 22:52:24,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:52:24,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934978511] [2020-07-21 22:52:24,129 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:52:24,312 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:52:24,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:52:24,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:52:24,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:52:24,374 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 22:52:24,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:52:24,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934978511] [2020-07-21 22:52:24,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:52:24,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:52:24,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592066523] [2020-07-21 22:52:24,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:52:24,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:52:24,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:52:24,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:52:24,376 INFO L87 Difference]: Start difference. First operand 3463 states and 3948 transitions. Second operand 3 states. [2020-07-21 22:52:24,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:52:24,920 INFO L93 Difference]: Finished difference Result 5562 states and 6368 transitions. [2020-07-21 22:52:24,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:52:24,921 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 263 [2020-07-21 22:52:24,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:52:24,929 INFO L225 Difference]: With dead ends: 5562 [2020-07-21 22:52:24,930 INFO L226 Difference]: Without dead ends: 2347 [2020-07-21 22:52:24,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:52:24,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2020-07-21 22:52:24,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2347. [2020-07-21 22:52:24,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2347 states. [2020-07-21 22:52:24,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 2619 transitions. [2020-07-21 22:52:24,985 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 2619 transitions. Word has length 263 [2020-07-21 22:52:24,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:52:24,986 INFO L479 AbstractCegarLoop]: Abstraction has 2347 states and 2619 transitions. [2020-07-21 22:52:24,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:52:24,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 2619 transitions. [2020-07-21 22:52:24,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-21 22:52:24,997 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:52:24,997 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 22:52:25,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:52:25,212 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:52:25,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:52:25,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1556497788, now seen corresponding path program 1 times [2020-07-21 22:52:25,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:52:25,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446680382] [2020-07-21 22:52:25,213 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:52:25,419 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:52:25,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:52:25,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:52:25,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:52:25,506 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2020-07-21 22:52:25,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:52:25,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446680382] [2020-07-21 22:52:25,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:52:25,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:52:25,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335634162] [2020-07-21 22:52:25,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:52:25,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:52:25,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:52:25,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:52:25,508 INFO L87 Difference]: Start difference. First operand 2347 states and 2619 transitions. Second operand 3 states. [2020-07-21 22:52:25,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:52:25,968 INFO L93 Difference]: Finished difference Result 2756 states and 3069 transitions. [2020-07-21 22:52:25,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:52:25,972 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 333 [2020-07-21 22:52:25,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:52:25,973 INFO L225 Difference]: With dead ends: 2756 [2020-07-21 22:52:25,973 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 22:52:25,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:52:25,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 22:52:25,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 22:52:25,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 22:52:25,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 22:52:25,980 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 333 [2020-07-21 22:52:25,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:52:25,980 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 22:52:25,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:52:25,980 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 22:52:25,980 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 22:52:26,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:52:26,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 22:52:26,979 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 172 [2020-07-21 22:52:27,320 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 176 [2020-07-21 22:52:28,246 WARN L193 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 67 [2020-07-21 22:52:28,385 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2020-07-21 22:52:29,029 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 52 [2020-07-21 22:52:29,685 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 52 [2020-07-21 22:52:29,689 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:52:29,689 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (let ((.cse3 (= 15 ~a8~0)) (.cse0 (not (= 15 |old(~a8~0)|))) (.cse1 (< 0 |old(~a7~0)|)) (.cse2 (not (= 1 |old(~a21~0)|))) (.cse4 (not (= 8 ~a12~0)))) (and (<= ~a16~0 |old(~a16~0)|) (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (or (not (= 1 |old(~a20~0)|)) .cse0 .cse1 .cse2 .cse3 .cse4) (<= |old(~a8~0)| ~a8~0) (= ~a20~0 |old(~a20~0)|) (= ~a21~0 |old(~a21~0)|) (or (and .cse3 (= 5 ~a16~0)) (not (= 5 |old(~a16~0)|)) .cse0 .cse1 (< 0 |old(~a20~0)|) .cse2 .cse4))) [2020-07-21 22:52:29,689 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:52:29,690 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 22:52:29,690 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 22:52:29,690 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,690 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,690 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,690 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,690 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,691 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,691 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 22:52:29,691 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 22:52:29,691 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 22:52:29,691 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 22:52:29,691 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 22:52:29,691 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 22:52:29,691 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 22:52:29,692 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 22:52:29,692 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 22:52:29,692 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 22:52:29,692 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,692 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,692 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,692 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,692 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,692 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,693 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 22:52:29,693 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 22:52:29,693 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 22:52:29,693 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 22:52:29,693 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 22:52:29,693 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 22:52:29,693 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 22:52:29,693 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 22:52:29,693 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 22:52:29,693 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 22:52:29,693 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 22:52:29,693 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 521) no Hoare annotation was computed. [2020-07-21 22:52:29,694 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 22:52:29,694 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 22:52:29,694 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 22:52:29,694 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 22:52:29,694 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,694 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,694 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,694 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,694 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,694 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 22:52:29,694 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 22:52:29,694 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 22:52:29,694 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 22:52:29,694 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 22:52:29,695 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 22:52:29,695 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 22:52:29,695 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 22:52:29,695 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 22:52:29,695 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,695 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,695 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,695 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,695 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,695 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 22:52:29,695 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 22:52:29,696 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 22:52:29,696 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 22:52:29,696 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 22:52:29,696 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 22:52:29,696 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 22:52:29,696 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 22:52:29,696 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 22:52:29,696 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 22:52:29,696 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 22:52:29,697 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 22:52:29,697 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 22:52:29,697 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,697 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,697 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,697 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,697 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,697 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 22:52:29,697 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 22:52:29,698 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 22:52:29,698 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 22:52:29,698 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 22:52:29,698 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 22:52:29,698 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 22:52:29,698 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 22:52:29,698 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 22:52:29,698 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,698 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,698 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,698 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,699 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,699 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,699 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 22:52:29,699 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,699 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 22:52:29,699 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 22:52:29,699 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 22:52:29,699 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 22:52:29,699 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 22:52:29,699 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 22:52:29,699 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 22:52:29,699 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 22:52:29,699 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 22:52:29,699 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 22:52:29,699 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 22:52:29,700 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 22:52:29,700 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 22:52:29,700 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,700 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,700 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,700 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,700 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,700 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 22:52:29,700 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 22:52:29,700 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 22:52:29,700 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 22:52:29,700 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 22:52:29,701 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 22:52:29,701 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 22:52:29,701 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 22:52:29,701 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,701 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,701 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,701 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,701 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,701 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 22:52:29,702 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 22:52:29,702 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 22:52:29,702 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 22:52:29,702 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 22:52:29,702 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 22:52:29,702 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 22:52:29,702 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 22:52:29,702 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 22:52:29,702 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 22:52:29,703 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse7 (= ~a7~0 |old(~a7~0)|)) (.cse8 (= ~a17~0 |old(~a17~0)|)) (.cse9 (= ~a16~0 |old(~a16~0)|)) (.cse10 (= ~a8~0 |old(~a8~0)|)) (.cse11 (= ~a20~0 |old(~a20~0)|))) (let ((.cse2 (= ~a21~0 |old(~a21~0)|)) (.cse0 (not (= 1 |old(~a7~0)|))) (.cse6 (not (<= |old(~a16~0)| 4))) (.cse3 (not (<= |old(~a7~0)| 0))) (.cse4 (and .cse7 .cse8 .cse9 .cse10 (= 1 ~a21~0) .cse11)) (.cse1 (not (= 1 |old(~a21~0)|))) (.cse5 (not (= 8 ~a12~0)))) (and (or .cse0 .cse1 (and (= 1 ~a7~0) .cse2)) (or (not (<= 15 |old(~a8~0)|)) .cse3 .cse4 .cse1 .cse5) (or .cse3 .cse6 .cse1 (and .cse7 .cse8 .cse9 .cse10 .cse11 .cse2) .cse5) (or (and (<= ~a16~0 |old(~a16~0)|) .cse7 .cse8 (<= |old(~a8~0)| ~a8~0) .cse11 .cse2) (not (<= |old(~a21~0)| 0))) (or .cse0 .cse6 .cse1 (<= ~a16~0 4)) (or (not (<= 14 |old(~a8~0)|)) .cse3 .cse4 (not (< |old(~a16~0)| 6)) .cse1 .cse5) (or (not (= 1 |old(~a20~0)|)) .cse3 .cse4 .cse1 .cse5)))) [2020-07-21 22:52:29,703 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 22:52:29,703 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,703 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,703 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,703 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,703 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 22:52:29,703 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,703 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,703 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 22:52:29,704 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 22:52:29,704 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 22:52:29,704 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 22:52:29,704 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 22:52:29,704 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 22:52:29,704 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 22:52:29,704 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 22:52:29,704 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 22:52:29,704 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 22:52:29,704 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 22:52:29,705 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 22:52:29,705 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,705 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,705 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,705 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,705 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,705 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 22:52:29,705 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,705 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 22:52:29,705 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 22:52:29,706 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 22:52:29,706 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 22:52:29,706 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 22:52:29,706 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 22:52:29,706 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 22:52:29,706 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 22:52:29,706 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 22:52:29,706 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 22:52:29,706 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 22:52:29,706 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 22:52:29,706 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 22:52:29,707 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 22:52:29,707 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,707 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,707 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,707 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,707 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,707 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:52:29,707 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 22:52:29,707 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 22:52:29,707 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 22:52:29,708 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 22:52:29,708 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 22:52:29,708 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 22:52:29,708 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 22:52:29,708 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 22:52:29,708 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 22:52:29,708 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 22:52:29,708 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:52:29,708 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (= 1 ~a17~0) (= 1 ~a21~0) (= 1 ~a20~0) (= 15 ~a8~0) (= 5 ~a16~0) (= 8 ~a12~0)) [2020-07-21 22:52:29,709 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 22:52:29,709 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:52:29,709 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (not (= 1 |old(~a20~0)|)) (not (= 5 |old(~a16~0)|)) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (and (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (= ~a16~0 |old(~a16~0)|) (= ~a8~0 |old(~a8~0)|) (= 1 ~a21~0) (= ~a20~0 |old(~a20~0)|)) (not (= 1 |old(~a17~0)|)) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))) [2020-07-21 22:52:29,709 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 22:52:29,709 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse0 (<= ~a7~0 0)) (.cse1 (= 1 ~a21~0)) (.cse2 (= 8 ~a12~0))) (or (not (= 5 |old(~a16~0)|)) (<= ~a21~0 0) (and .cse0 (<= 15 ~a8~0) .cse1 .cse2) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (= 1 |old(~a17~0)|)) (and .cse0 .cse1 (= 1 ~a20~0) .cse2) (and (< ~a16~0 6) .cse0 (<= 14 ~a8~0) .cse1) (not (= 1 |old(~a20~0)|)) (and .cse0 .cse1 (<= ~a16~0 4)) (and (= 1 ~a7~0) .cse1) (not (= 1 |old(~a21~0)|)) (not .cse2))) [2020-07-21 22:52:29,709 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 22:52:29,709 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 22:52:29,710 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse0 (<= ~a7~0 0)) (.cse1 (= 1 ~a21~0)) (.cse2 (= 8 ~a12~0))) (or (not (= 5 |old(~a16~0)|)) (<= ~a21~0 0) (and .cse0 (<= 15 ~a8~0) .cse1 .cse2) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (= 1 |old(~a17~0)|)) (and .cse0 .cse1 (= 1 ~a20~0) .cse2) (and (< ~a16~0 6) .cse0 (<= 14 ~a8~0) .cse1) (not (= 1 |old(~a20~0)|)) (and .cse0 .cse1 (<= ~a16~0 4)) (and (= 1 ~a7~0) .cse1) (not (= 1 |old(~a21~0)|)) (not .cse2))) [2020-07-21 22:52:29,710 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 22:52:29,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:52:29 BoogieIcfgContainer [2020-07-21 22:52:29,730 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:52:29,731 INFO L168 Benchmark]: Toolchain (without parser) took 50523.97 ms. Allocated memory was 139.5 MB in the beginning and 626.0 MB in the end (delta: 486.5 MB). Free memory was 103.4 MB in the beginning and 268.8 MB in the end (delta: -165.5 MB). Peak memory consumption was 489.3 MB. Max. memory is 7.1 GB. [2020-07-21 22:52:29,732 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-21 22:52:29,732 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.73 ms. Allocated memory was 139.5 MB in the beginning and 206.6 MB in the end (delta: 67.1 MB). Free memory was 102.9 MB in the beginning and 173.5 MB in the end (delta: -70.6 MB). Peak memory consumption was 37.5 MB. Max. memory is 7.1 GB. [2020-07-21 22:52:29,733 INFO L168 Benchmark]: Boogie Preprocessor took 110.77 ms. Allocated memory is still 206.6 MB. Free memory was 173.5 MB in the beginning and 167.9 MB in the end (delta: 5.6 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. [2020-07-21 22:52:29,734 INFO L168 Benchmark]: RCFGBuilder took 1268.68 ms. Allocated memory was 206.6 MB in the beginning and 239.1 MB in the end (delta: 32.5 MB). Free memory was 167.9 MB in the beginning and 180.7 MB in the end (delta: -12.8 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. [2020-07-21 22:52:29,734 INFO L168 Benchmark]: TraceAbstraction took 48378.53 ms. Allocated memory was 239.1 MB in the beginning and 626.0 MB in the end (delta: 386.9 MB). Free memory was 180.7 MB in the beginning and 268.8 MB in the end (delta: -88.1 MB). Peak memory consumption was 467.1 MB. Max. memory is 7.1 GB. [2020-07-21 22:52:29,737 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 759.73 ms. Allocated memory was 139.5 MB in the beginning and 206.6 MB in the end (delta: 67.1 MB). Free memory was 102.9 MB in the beginning and 173.5 MB in the end (delta: -70.6 MB). Peak memory consumption was 37.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.77 ms. Allocated memory is still 206.6 MB. Free memory was 173.5 MB in the beginning and 167.9 MB in the end (delta: 5.6 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1268.68 ms. Allocated memory was 206.6 MB in the beginning and 239.1 MB in the end (delta: 32.5 MB). Free memory was 167.9 MB in the beginning and 180.7 MB in the end (delta: -12.8 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 48378.53 ms. Allocated memory was 239.1 MB in the beginning and 626.0 MB in the end (delta: 386.9 MB). Free memory was 180.7 MB in the beginning and 268.8 MB in the end (delta: -88.1 MB). Peak memory consumption was 467.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 521]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 583]: Loop Invariant Derived loop invariant: (((((((((((!(5 == \old(a16)) || a21 <= 0) || (((a7 <= 0 && 15 <= a8) && 1 == a21) && 8 == a12)) || !(15 == \old(a8))) || !(\old(a7) <= 0)) || !(1 == \old(a17))) || (((a7 <= 0 && 1 == a21) && 1 == a20) && 8 == a12)) || (((a16 < 6 && a7 <= 0) && 14 <= a8) && 1 == a21)) || !(1 == \old(a20))) || ((a7 <= 0 && 1 == a21) && a16 <= 4)) || (1 == a7 && 1 == a21)) || !(1 == \old(a21))) || !(8 == a12) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 44.7s, OverallIterations: 13, TraceHistogramMax: 6, AutomataDifference: 28.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 781 SDtfs, 7294 SDslu, 925 SDs, 0 SdLazy, 16773 SolverSat, 1912 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4079 GetRequests, 3835 SyntacticMatches, 14 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2474 ImplicationChecksByTransitivity, 15.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3463occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 1545 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 130 PreInvPairs, 178 NumberOfFragments, 524 HoareAnnotationTreeSize, 130 FomulaSimplifications, 72185 FormulaSimplificationTreeSizeReduction, 1.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 30738 FormulaSimplificationTreeSizeReductionInter, 2.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 2507 NumberOfCodeBlocks, 1873 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 3933 ConstructedInterpolants, 0 QuantifiedInterpolants, 7394427 SizeOfPredicates, 105 NumberOfNonLiveVariables, 5704 ConjunctsInSsa, 320 ConjunctsInUnsatCore, 21 InterpolantComputations, 5 PerfectInterpolantSequences, 2076/2289 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...