/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 NUM_VARIABLES --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/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 17:52:18,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 17:52:18,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 17:52:18,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 17:52:18,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 17:52:18,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 17:52:18,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 17:52:18,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 17:52:18,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 17:52:18,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 17:52:18,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 17:52:18,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 17:52:18,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 17:52:18,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 17:52:18,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 17:52:18,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 17:52:18,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 17:52:18,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 17:52:18,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 17:52:18,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 17:52:18,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 17:52:18,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 17:52:18,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 17:52:18,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 17:52:18,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 17:52:18,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 17:52:18,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 17:52:18,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 17:52:18,426 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 [2020-07-20 17:52:18,461 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 17:52:18,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 17:52:18,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 17:52:18,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 17:52:18,466 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 17:52:18,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 17:52:18,466 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 17:52:18,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 17:52:18,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 17:52:18,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 17:52:18,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 17:52:18,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 17:52:18,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 17:52:18,470 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 17:52:18,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 17:52:18,470 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 17:52:18,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 17:52:18,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 17:52:18,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 17:52:18,471 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 17:52:18,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 17:52:18,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 17:52:18,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 17:52:18,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 17:52:18,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 17:52:18,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 17:52:18,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:18,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 17:52:18,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 17:52:18,474 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 -> NUM_VARIABLES 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 [2020-07-20 17:52:18,777 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 17:52:18,790 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 17:52:18,793 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 17:52:18,794 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 17:52:18,795 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 17:52:18,795 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2020-07-20 17:52:18,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8375b9a8e/795b797303dd40d5b499f6483153b508/FLAG5e6bfacb3 [2020-07-20 17:52:19,331 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 17:52:19,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2020-07-20 17:52:19,339 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8375b9a8e/795b797303dd40d5b499f6483153b508/FLAG5e6bfacb3 [2020-07-20 17:52:19,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8375b9a8e/795b797303dd40d5b499f6483153b508 [2020-07-20 17:52:19,687 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 17:52:19,690 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 17:52:19,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 17:52:19,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 17:52:19,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 17:52:19,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:52:19" (1/1) ... [2020-07-20 17:52:19,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@83b7be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:52:19, skipping insertion in model container [2020-07-20 17:52:19,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:52:19" (1/1) ... [2020-07-20 17:52:19,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 17:52:19,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 17:52:19,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:52:19,992 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 17:52:20,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:52:20,049 INFO L208 MainTranslator]: Completed translation [2020-07-20 17:52:20,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:52:20 WrapperNode [2020-07-20 17:52:20,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 17:52:20,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 17:52:20,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 17:52:20,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 17:52:20,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:52:20" (1/1) ... [2020-07-20 17:52:20,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:52:20" (1/1) ... [2020-07-20 17:52:20,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:52:20" (1/1) ... [2020-07-20 17:52:20,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:52:20" (1/1) ... [2020-07-20 17:52:20,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:52:20" (1/1) ... [2020-07-20 17:52:20,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:52:20" (1/1) ... [2020-07-20 17:52:20,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:52:20" (1/1) ... [2020-07-20 17:52:20,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 17:52:20,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 17:52:20,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 17:52:20,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 17:52:20,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:52:20" (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 [2020-07-20 17:52:20,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 17:52:20,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 17:52:20,244 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 17:52:20,244 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 17:52:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 17:52:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 17:52:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 17:52:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 17:52:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 17:52:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 17:52:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 17:52:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 17:52:20,652 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 17:52:20,652 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 17:52:20,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:52:20 BoogieIcfgContainer [2020-07-20 17:52:20,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 17:52:20,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 17:52:20,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 17:52:20,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 17:52:20,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:52:19" (1/3) ... [2020-07-20 17:52:20,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b0986ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:52:20, skipping insertion in model container [2020-07-20 17:52:20,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:52:20" (2/3) ... [2020-07-20 17:52:20,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b0986ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:52:20, skipping insertion in model container [2020-07-20 17:52:20,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:52:20" (3/3) ... [2020-07-20 17:52:20,676 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i.v+cfa-reducer.c [2020-07-20 17:52:20,684 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 17:52:20,690 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 18 error locations. [2020-07-20 17:52:20,702 INFO L251 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-07-20 17:52:20,728 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 17:52:20,728 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 17:52:20,728 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 17:52:20,728 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 17:52:20,728 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 17:52:20,729 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 17:52:20,729 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 17:52:20,729 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 17:52:20,751 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-07-20 17:52:20,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 17:52:20,757 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:52:20,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:52:20,759 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:52:20,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:52:20,765 INFO L82 PathProgramCache]: Analyzing trace with hash -2019463306, now seen corresponding path program 1 times [2020-07-20 17:52:20,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:52:20,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419228447] [2020-07-20 17:52:20,772 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 [2020-07-20 17:52:20,893 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:52:20,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:52:20,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 17:52:20,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:52:20,972 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:21,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:52:21,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:52:21,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419228447] [2020-07-20 17:52:21,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:52:21,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:52:21,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943960201] [2020-07-20 17:52:21,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:52:21,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:52:21,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:52:21,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:52:21,037 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 3 states. [2020-07-20 17:52:21,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:52:21,070 INFO L93 Difference]: Finished difference Result 93 states and 129 transitions. [2020-07-20 17:52:21,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:52:21,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-20 17:52:21,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:52:21,084 INFO L225 Difference]: With dead ends: 93 [2020-07-20 17:52:21,084 INFO L226 Difference]: Without dead ends: 80 [2020-07-20 17:52:21,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:52:21,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-07-20 17:52:21,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-07-20 17:52:21,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-20 17:52:21,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2020-07-20 17:52:21,133 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 19 [2020-07-20 17:52:21,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:52:21,134 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2020-07-20 17:52:21,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:52:21,134 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2020-07-20 17:52:21,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 17:52:21,135 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:52:21,136 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] [2020-07-20 17:52:21,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:21,350 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:52:21,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:52:21,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1821150056, now seen corresponding path program 1 times [2020-07-20 17:52:21,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:52:21,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120184130] [2020-07-20 17:52:21,354 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 [2020-07-20 17:52:21,427 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:52:21,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:52:21,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 17:52:21,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:52:21,485 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:21,488 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:52:21,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:52:21,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120184130] [2020-07-20 17:52:21,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:52:21,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 17:52:21,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129859236] [2020-07-20 17:52:21,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 17:52:21,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:52:21,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 17:52:21,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 17:52:21,509 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand 6 states. [2020-07-20 17:52:21,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:52:21,629 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2020-07-20 17:52:21,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 17:52:21,630 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-07-20 17:52:21,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:52:21,631 INFO L225 Difference]: With dead ends: 80 [2020-07-20 17:52:21,632 INFO L226 Difference]: Without dead ends: 78 [2020-07-20 17:52:21,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 17:52:21,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-20 17:52:21,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-07-20 17:52:21,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-07-20 17:52:21,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2020-07-20 17:52:21,645 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 20 [2020-07-20 17:52:21,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:52:21,645 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2020-07-20 17:52:21,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 17:52:21,646 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2020-07-20 17:52:21,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 17:52:21,647 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:52:21,647 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] [2020-07-20 17:52:21,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:21,863 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:52:21,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:52:21,864 INFO L82 PathProgramCache]: Analyzing trace with hash 2073610827, now seen corresponding path program 1 times [2020-07-20 17:52:21,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:52:21,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366721868] [2020-07-20 17:52:21,865 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 [2020-07-20 17:52:21,930 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:52:21,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:52:21,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 17:52:21,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:52:21,951 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:21,954 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:52:21,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:52:21,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366721868] [2020-07-20 17:52:21,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:52:21,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 17:52:21,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449906818] [2020-07-20 17:52:21,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 17:52:21,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:52:21,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 17:52:21,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 17:52:21,973 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 4 states. [2020-07-20 17:52:22,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:52:22,088 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2020-07-20 17:52:22,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 17:52:22,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-20 17:52:22,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:52:22,091 INFO L225 Difference]: With dead ends: 101 [2020-07-20 17:52:22,091 INFO L226 Difference]: Without dead ends: 99 [2020-07-20 17:52:22,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:52:22,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-07-20 17:52:22,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 76. [2020-07-20 17:52:22,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-20 17:52:22,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2020-07-20 17:52:22,109 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 22 [2020-07-20 17:52:22,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:52:22,112 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2020-07-20 17:52:22,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 17:52:22,112 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2020-07-20 17:52:22,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 17:52:22,113 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:52:22,113 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] [2020-07-20 17:52:22,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:22,315 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:52:22,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:52:22,316 INFO L82 PathProgramCache]: Analyzing trace with hash -142570686, now seen corresponding path program 1 times [2020-07-20 17:52:22,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:52:22,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078737516] [2020-07-20 17:52:22,317 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 [2020-07-20 17:52:22,359 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:52:22,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:52:22,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 17:52:22,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:52:22,376 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:22,378 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:22,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:52:22,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:52:22,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078737516] [2020-07-20 17:52:22,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:52:22,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 17:52:22,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749042423] [2020-07-20 17:52:22,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:52:22,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:52:22,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:52:22,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:52:22,388 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 5 states. [2020-07-20 17:52:22,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:52:22,450 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2020-07-20 17:52:22,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 17:52:22,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-07-20 17:52:22,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:52:22,452 INFO L225 Difference]: With dead ends: 76 [2020-07-20 17:52:22,452 INFO L226 Difference]: Without dead ends: 74 [2020-07-20 17:52:22,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 17:52:22,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-20 17:52:22,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-07-20 17:52:22,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-07-20 17:52:22,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-07-20 17:52:22,461 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 23 [2020-07-20 17:52:22,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:52:22,461 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-07-20 17:52:22,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:52:22,462 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-07-20 17:52:22,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 17:52:22,463 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:52:22,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:52:22,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:22,664 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:52:22,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:52:22,665 INFO L82 PathProgramCache]: Analyzing trace with hash 402497124, now seen corresponding path program 1 times [2020-07-20 17:52:22,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:52:22,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580143103] [2020-07-20 17:52:22,666 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 [2020-07-20 17:52:22,703 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:52:22,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:52:22,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 17:52:22,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:52:22,723 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:22,725 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:22,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:52:22,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:52:22,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580143103] [2020-07-20 17:52:22,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:52:22,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 17:52:22,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569678423] [2020-07-20 17:52:22,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 17:52:22,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:52:22,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 17:52:22,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 17:52:22,736 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 4 states. [2020-07-20 17:52:22,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:52:22,836 INFO L93 Difference]: Finished difference Result 158 states and 166 transitions. [2020-07-20 17:52:22,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 17:52:22,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-07-20 17:52:22,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:52:22,839 INFO L225 Difference]: With dead ends: 158 [2020-07-20 17:52:22,839 INFO L226 Difference]: Without dead ends: 156 [2020-07-20 17:52:22,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:52:22,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-07-20 17:52:22,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 77. [2020-07-20 17:52:22,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-20 17:52:22,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-07-20 17:52:22,849 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 26 [2020-07-20 17:52:22,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:52:22,849 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-07-20 17:52:22,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 17:52:22,850 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-07-20 17:52:22,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 17:52:22,851 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:52:22,851 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] [2020-07-20 17:52:23,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:23,067 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:52:23,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:52:23,067 INFO L82 PathProgramCache]: Analyzing trace with hash 406230933, now seen corresponding path program 1 times [2020-07-20 17:52:23,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:52:23,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590440092] [2020-07-20 17:52:23,068 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 [2020-07-20 17:52:23,104 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:52:23,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:52:23,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 17:52:23,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:52:23,116 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:23,118 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:23,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:52:23,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:52:23,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590440092] [2020-07-20 17:52:23,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:52:23,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 17:52:23,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622725937] [2020-07-20 17:52:23,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 17:52:23,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:52:23,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 17:52:23,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 17:52:23,133 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 4 states. [2020-07-20 17:52:23,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:52:23,197 INFO L93 Difference]: Finished difference Result 124 states and 130 transitions. [2020-07-20 17:52:23,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 17:52:23,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-07-20 17:52:23,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:52:23,199 INFO L225 Difference]: With dead ends: 124 [2020-07-20 17:52:23,199 INFO L226 Difference]: Without dead ends: 122 [2020-07-20 17:52:23,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:52:23,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-20 17:52:23,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 79. [2020-07-20 17:52:23,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-20 17:52:23,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2020-07-20 17:52:23,208 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 26 [2020-07-20 17:52:23,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:52:23,209 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2020-07-20 17:52:23,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 17:52:23,209 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2020-07-20 17:52:23,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 17:52:23,210 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:52:23,211 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] [2020-07-20 17:52:23,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:23,424 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:52:23,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:52:23,426 INFO L82 PathProgramCache]: Analyzing trace with hash -407487796, now seen corresponding path program 1 times [2020-07-20 17:52:23,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:52:23,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508080727] [2020-07-20 17:52:23,427 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 [2020-07-20 17:52:23,476 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:52:23,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:52:23,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 17:52:23,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:52:23,504 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 17:52:23,505 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:23,511 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:23,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:52:23,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:52:23,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508080727] [2020-07-20 17:52:23,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:52:23,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 17:52:23,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16441529] [2020-07-20 17:52:23,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:52:23,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:52:23,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:52:23,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:52:23,533 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 5 states. [2020-07-20 17:52:23,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:52:23,676 INFO L93 Difference]: Finished difference Result 121 states and 127 transitions. [2020-07-20 17:52:23,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 17:52:23,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-20 17:52:23,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:52:23,678 INFO L225 Difference]: With dead ends: 121 [2020-07-20 17:52:23,678 INFO L226 Difference]: Without dead ends: 119 [2020-07-20 17:52:23,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 17:52:23,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-07-20 17:52:23,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 77. [2020-07-20 17:52:23,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-20 17:52:23,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-07-20 17:52:23,686 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 27 [2020-07-20 17:52:23,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:52:23,687 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-07-20 17:52:23,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:52:23,687 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-07-20 17:52:23,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 17:52:23,688 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:52:23,688 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] [2020-07-20 17:52:23,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:23,902 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:52:23,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:52:23,902 INFO L82 PathProgramCache]: Analyzing trace with hash -291739827, now seen corresponding path program 1 times [2020-07-20 17:52:23,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:52:23,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984425261] [2020-07-20 17:52:23,903 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 [2020-07-20 17:52:23,937 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:52:23,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:52:23,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 17:52:23,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:52:23,954 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 17:52:23,955 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:23,964 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:23,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:52:23,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:52:23,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984425261] [2020-07-20 17:52:23,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:52:23,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 17:52:23,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417325435] [2020-07-20 17:52:23,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:52:23,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:52:23,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:52:23,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:52:23,973 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 5 states. [2020-07-20 17:52:24,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:52:24,079 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-07-20 17:52:24,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 17:52:24,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-20 17:52:24,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:52:24,081 INFO L225 Difference]: With dead ends: 77 [2020-07-20 17:52:24,081 INFO L226 Difference]: Without dead ends: 75 [2020-07-20 17:52:24,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 17:52:24,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-07-20 17:52:24,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-07-20 17:52:24,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-20 17:52:24,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-07-20 17:52:24,088 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 27 [2020-07-20 17:52:24,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:52:24,088 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-07-20 17:52:24,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:52:24,089 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-07-20 17:52:24,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 17:52:24,096 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:52:24,096 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] [2020-07-20 17:52:24,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:24,310 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:52:24,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:52:24,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1188998893, now seen corresponding path program 1 times [2020-07-20 17:52:24,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:52:24,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020369469] [2020-07-20 17:52:24,312 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 [2020-07-20 17:52:24,351 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 17:52:24,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:52:24,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 17:52:24,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:52:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:52:24,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:52:24,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020369469] [2020-07-20 17:52:24,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:52:24,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:52:24,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297441585] [2020-07-20 17:52:24,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:52:24,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:52:24,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:52:24,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:52:24,369 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 3 states. [2020-07-20 17:52:24,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:52:24,418 INFO L93 Difference]: Finished difference Result 115 states and 121 transitions. [2020-07-20 17:52:24,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:52:24,419 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-07-20 17:52:24,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:52:24,420 INFO L225 Difference]: With dead ends: 115 [2020-07-20 17:52:24,420 INFO L226 Difference]: Without dead ends: 75 [2020-07-20 17:52:24,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:52:24,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-07-20 17:52:24,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-07-20 17:52:24,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-20 17:52:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-07-20 17:52:24,426 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 29 [2020-07-20 17:52:24,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:52:24,427 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-07-20 17:52:24,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:52:24,427 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-07-20 17:52:24,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 17:52:24,428 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:52:24,428 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] [2020-07-20 17:52:24,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:24,640 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:52:24,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:52:24,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1640998784, now seen corresponding path program 1 times [2020-07-20 17:52:24,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:52:24,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581598766] [2020-07-20 17:52:24,642 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 [2020-07-20 17:52:24,677 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:52:24,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:52:24,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 17:52:24,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:52:24,703 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:24,705 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 17:52:24,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:52:24,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:52:24,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581598766] [2020-07-20 17:52:24,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:52:24,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 17:52:24,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637739084] [2020-07-20 17:52:24,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:52:24,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:52:24,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:52:24,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:52:24,718 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 5 states. [2020-07-20 17:52:24,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:52:24,794 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2020-07-20 17:52:24,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 17:52:24,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-20 17:52:24,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:52:24,796 INFO L225 Difference]: With dead ends: 76 [2020-07-20 17:52:24,796 INFO L226 Difference]: Without dead ends: 74 [2020-07-20 17:52:24,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 17:52:24,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-20 17:52:24,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-07-20 17:52:24,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-07-20 17:52:24,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2020-07-20 17:52:24,802 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 30 [2020-07-20 17:52:24,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:52:24,802 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2020-07-20 17:52:24,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:52:24,803 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2020-07-20 17:52:24,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 17:52:24,803 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:52:24,804 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-20 17:52:25,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:25,018 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:52:25,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:52:25,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1892106755, now seen corresponding path program 1 times [2020-07-20 17:52:25,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:52:25,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750224618] [2020-07-20 17:52:25,021 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 [2020-07-20 17:52:25,056 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:52:25,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:52:25,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 17:52:25,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:52:25,089 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:25,091 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:25,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 17:52:25,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:52:25,112 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:52:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 17:52:25,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750224618] [2020-07-20 17:52:25,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 17:52:25,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-07-20 17:52:25,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306685118] [2020-07-20 17:52:25,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:52:25,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:52:25,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:52:25,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:52:25,135 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 5 states. [2020-07-20 17:52:25,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:52:25,226 INFO L93 Difference]: Finished difference Result 111 states and 115 transitions. [2020-07-20 17:52:25,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 17:52:25,227 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-20 17:52:25,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:52:25,228 INFO L225 Difference]: With dead ends: 111 [2020-07-20 17:52:25,228 INFO L226 Difference]: Without dead ends: 109 [2020-07-20 17:52:25,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 17:52:25,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-20 17:52:25,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 70. [2020-07-20 17:52:25,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-20 17:52:25,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2020-07-20 17:52:25,235 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 30 [2020-07-20 17:52:25,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:52:25,235 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2020-07-20 17:52:25,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:52:25,235 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2020-07-20 17:52:25,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 17:52:25,236 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:52:25,236 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] [2020-07-20 17:52:25,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:25,448 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:52:25,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:52:25,449 INFO L82 PathProgramCache]: Analyzing trace with hash 668648404, now seen corresponding path program 1 times [2020-07-20 17:52:25,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:52:25,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843102565] [2020-07-20 17:52:25,450 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 [2020-07-20 17:52:25,496 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:52:25,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:52:25,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 17:52:25,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:52:25,509 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:25,510 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:25,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:52:25,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:52:25,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843102565] [2020-07-20 17:52:25,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:52:25,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 17:52:25,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868724532] [2020-07-20 17:52:25,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:52:25,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:52:25,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:52:25,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:52:25,519 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand 5 states. [2020-07-20 17:52:25,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:52:25,586 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2020-07-20 17:52:25,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 17:52:25,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-07-20 17:52:25,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:52:25,587 INFO L225 Difference]: With dead ends: 70 [2020-07-20 17:52:25,587 INFO L226 Difference]: Without dead ends: 68 [2020-07-20 17:52:25,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 17:52:25,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-20 17:52:25,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-20 17:52:25,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-20 17:52:25,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2020-07-20 17:52:25,594 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 31 [2020-07-20 17:52:25,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:52:25,596 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2020-07-20 17:52:25,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:52:25,596 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2020-07-20 17:52:25,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 17:52:25,598 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:52:25,598 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-20 17:52:25,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:25,801 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:52:25,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:52:25,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1470784207, now seen corresponding path program 1 times [2020-07-20 17:52:25,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:52:25,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688782322] [2020-07-20 17:52:25,803 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 [2020-07-20 17:52:25,838 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:52:25,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:52:25,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 17:52:25,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:52:25,868 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:25,869 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:25,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 17:52:25,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:52:25,885 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:52:25,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 17:52:25,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688782322] [2020-07-20 17:52:25,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 17:52:25,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-07-20 17:52:25,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672710757] [2020-07-20 17:52:25,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:52:25,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:52:25,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:52:25,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:52:25,917 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand 5 states. [2020-07-20 17:52:25,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:52:25,984 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2020-07-20 17:52:25,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 17:52:25,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-07-20 17:52:25,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:52:25,985 INFO L225 Difference]: With dead ends: 69 [2020-07-20 17:52:25,985 INFO L226 Difference]: Without dead ends: 67 [2020-07-20 17:52:25,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 17:52:25,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-20 17:52:25,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2020-07-20 17:52:25,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-20 17:52:25,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2020-07-20 17:52:25,990 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 31 [2020-07-20 17:52:25,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:52:25,990 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2020-07-20 17:52:25,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:52:25,990 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2020-07-20 17:52:25,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-20 17:52:25,991 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:52:25,991 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] [2020-07-20 17:52:26,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:26,202 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:52:26,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:52:26,203 INFO L82 PathProgramCache]: Analyzing trace with hash -350608983, now seen corresponding path program 1 times [2020-07-20 17:52:26,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:52:26,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254992184] [2020-07-20 17:52:26,204 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:26,241 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:52:26,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:52:26,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 17:52:26,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:52:26,275 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:26,277 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 17:52:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:52:26,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:52:26,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254992184] [2020-07-20 17:52:26,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:52:26,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 17:52:26,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672710893] [2020-07-20 17:52:26,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:52:26,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:52:26,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:52:26,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:52:26,289 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand 5 states. [2020-07-20 17:52:26,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:52:26,362 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-07-20 17:52:26,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 17:52:26,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-07-20 17:52:26,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:52:26,363 INFO L225 Difference]: With dead ends: 63 [2020-07-20 17:52:26,363 INFO L226 Difference]: Without dead ends: 61 [2020-07-20 17:52:26,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 17:52:26,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-20 17:52:26,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-07-20 17:52:26,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-20 17:52:26,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2020-07-20 17:52:26,367 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 34 [2020-07-20 17:52:26,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:52:26,368 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2020-07-20 17:52:26,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:52:26,368 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2020-07-20 17:52:26,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-20 17:52:26,368 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:52:26,369 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] [2020-07-20 17:52:26,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:26,570 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:52:26,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:52:26,571 INFO L82 PathProgramCache]: Analyzing trace with hash 2016026591, now seen corresponding path program 1 times [2020-07-20 17:52:26,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:52:26,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481728242] [2020-07-20 17:52:26,572 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:26,610 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:52:26,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:52:26,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 17:52:26,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:52:26,627 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 17:52:26,628 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:26,645 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:26,647 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:26,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:52:26,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:52:26,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481728242] [2020-07-20 17:52:26,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:52:26,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 17:52:26,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30993258] [2020-07-20 17:52:26,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 17:52:26,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:52:26,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 17:52:26,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 17:52:26,661 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 6 states. [2020-07-20 17:52:26,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:52:26,775 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2020-07-20 17:52:26,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 17:52:26,776 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-07-20 17:52:26,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:52:26,777 INFO L225 Difference]: With dead ends: 71 [2020-07-20 17:52:26,777 INFO L226 Difference]: Without dead ends: 69 [2020-07-20 17:52:26,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-07-20 17:52:26,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-20 17:52:26,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 58. [2020-07-20 17:52:26,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-07-20 17:52:26,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-07-20 17:52:26,781 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 35 [2020-07-20 17:52:26,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:52:26,782 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-07-20 17:52:26,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 17:52:26,782 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-07-20 17:52:26,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 17:52:26,783 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:52:26,783 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] [2020-07-20 17:52:26,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:26,984 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:52:26,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:52:26,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1371399406, now seen corresponding path program 1 times [2020-07-20 17:52:26,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:52:26,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666827771] [2020-07-20 17:52:26,986 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:27,034 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:52:27,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:52:27,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 17:52:27,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:52:27,066 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 17:52:27,066 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:27,072 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:27,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:52:27,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:52:27,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666827771] [2020-07-20 17:52:27,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:52:27,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 17:52:27,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911375883] [2020-07-20 17:52:27,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:52:27,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:52:27,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:52:27,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:52:27,081 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 5 states. [2020-07-20 17:52:27,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:52:27,186 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2020-07-20 17:52:27,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 17:52:27,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-07-20 17:52:27,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:52:27,188 INFO L225 Difference]: With dead ends: 93 [2020-07-20 17:52:27,188 INFO L226 Difference]: Without dead ends: 91 [2020-07-20 17:52:27,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 17:52:27,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-07-20 17:52:27,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 61. [2020-07-20 17:52:27,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-20 17:52:27,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-07-20 17:52:27,193 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 38 [2020-07-20 17:52:27,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:52:27,193 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-07-20 17:52:27,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:52:27,193 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-07-20 17:52:27,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-07-20 17:52:27,194 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:52:27,194 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] [2020-07-20 17:52:27,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:27,405 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:52:27,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:52:27,405 INFO L82 PathProgramCache]: Analyzing trace with hash 436294569, now seen corresponding path program 1 times [2020-07-20 17:52:27,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:52:27,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389142849] [2020-07-20 17:52:27,406 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:27,457 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:52:27,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:52:27,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 17:52:27,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:52:27,472 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 17:52:27,472 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:27,477 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:27,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:52:27,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:52:27,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389142849] [2020-07-20 17:52:27,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:52:27,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 17:52:27,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840846498] [2020-07-20 17:52:27,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:52:27,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:52:27,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:52:27,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:52:27,484 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 5 states. [2020-07-20 17:52:27,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:52:27,559 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2020-07-20 17:52:27,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 17:52:27,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-07-20 17:52:27,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:52:27,561 INFO L225 Difference]: With dead ends: 61 [2020-07-20 17:52:27,561 INFO L226 Difference]: Without dead ends: 59 [2020-07-20 17:52:27,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 17:52:27,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-07-20 17:52:27,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-07-20 17:52:27,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-20 17:52:27,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2020-07-20 17:52:27,565 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 39 [2020-07-20 17:52:27,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:52:27,565 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2020-07-20 17:52:27,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:52:27,566 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2020-07-20 17:52:27,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-20 17:52:27,566 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:52:27,566 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] [2020-07-20 17:52:27,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:27,775 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:52:27,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:52:27,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1627614740, now seen corresponding path program 1 times [2020-07-20 17:52:27,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:52:27,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782392586] [2020-07-20 17:52:27,777 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:27,817 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:52:27,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:52:27,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 17:52:27,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:52:27,829 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:27,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:52:27,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:52:27,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782392586] [2020-07-20 17:52:27,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:52:27,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 17:52:27,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280801637] [2020-07-20 17:52:27,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 17:52:27,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:52:27,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 17:52:27,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 17:52:27,844 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 4 states. [2020-07-20 17:52:27,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:52:27,876 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2020-07-20 17:52:27,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 17:52:27,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-07-20 17:52:27,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:52:27,877 INFO L225 Difference]: With dead ends: 70 [2020-07-20 17:52:27,877 INFO L226 Difference]: Without dead ends: 68 [2020-07-20 17:52:27,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:52:27,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-20 17:52:27,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2020-07-20 17:52:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-20 17:52:27,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-07-20 17:52:27,882 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 41 [2020-07-20 17:52:27,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:52:27,883 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-07-20 17:52:27,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 17:52:27,883 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-07-20 17:52:27,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-20 17:52:27,883 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:52:27,883 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] [2020-07-20 17:52:28,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:28,084 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:52:28,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:52:28,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1083553822, now seen corresponding path program 1 times [2020-07-20 17:52:28,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:52:28,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369872715] [2020-07-20 17:52:28,085 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:28,128 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:52:28,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:52:28,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 17:52:28,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:52:28,143 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:28,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:52:28,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:52:28,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369872715] [2020-07-20 17:52:28,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:52:28,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 17:52:28,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594999724] [2020-07-20 17:52:28,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:52:28,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:52:28,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:52:28,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:52:28,165 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 5 states. [2020-07-20 17:52:28,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:52:28,187 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2020-07-20 17:52:28,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 17:52:28,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-07-20 17:52:28,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:52:28,189 INFO L225 Difference]: With dead ends: 66 [2020-07-20 17:52:28,189 INFO L226 Difference]: Without dead ends: 64 [2020-07-20 17:52:28,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-20 17:52:28,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-20 17:52:28,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2020-07-20 17:52:28,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-20 17:52:28,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-07-20 17:52:28,193 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 42 [2020-07-20 17:52:28,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:52:28,193 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-07-20 17:52:28,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:52:28,194 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-07-20 17:52:28,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-20 17:52:28,194 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:52:28,194 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] [2020-07-20 17:52:28,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:28,403 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:52:28,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:52:28,404 INFO L82 PathProgramCache]: Analyzing trace with hash -769566670, now seen corresponding path program 1 times [2020-07-20 17:52:28,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:52:28,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360266590] [2020-07-20 17:52:28,405 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:28,449 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:52:28,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:52:28,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 17:52:28,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:52:28,472 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 17:52:28,472 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:28,478 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:28,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:52:28,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:52:28,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360266590] [2020-07-20 17:52:28,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:52:28,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 17:52:28,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908075888] [2020-07-20 17:52:28,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:52:28,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:52:28,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:52:28,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:52:28,486 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 5 states. [2020-07-20 17:52:28,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:52:28,634 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2020-07-20 17:52:28,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 17:52:28,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-07-20 17:52:28,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:52:28,635 INFO L225 Difference]: With dead ends: 76 [2020-07-20 17:52:28,635 INFO L226 Difference]: Without dead ends: 74 [2020-07-20 17:52:28,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 17:52:28,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-20 17:52:28,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 53. [2020-07-20 17:52:28,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-20 17:52:28,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-07-20 17:52:28,640 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 43 [2020-07-20 17:52:28,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:52:28,640 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-07-20 17:52:28,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:52:28,641 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-07-20 17:52:28,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-20 17:52:28,641 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:52:28,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:52:28,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:28,842 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:52:28,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:52:28,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1913240228, now seen corresponding path program 1 times [2020-07-20 17:52:28,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:52:28,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058430631] [2020-07-20 17:52:28,844 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:28,888 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:52:28,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:52:28,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 17:52:28,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:52:28,901 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 17:52:28,902 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:28,905 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:28,906 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:52:28,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:52:28,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058430631] [2020-07-20 17:52:28,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:52:28,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 17:52:28,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378844396] [2020-07-20 17:52:28,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:52:28,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:52:28,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:52:28,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:52:28,915 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-07-20 17:52:29,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:52:29,017 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-07-20 17:52:29,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 17:52:29,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-07-20 17:52:29,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:52:29,018 INFO L225 Difference]: With dead ends: 65 [2020-07-20 17:52:29,018 INFO L226 Difference]: Without dead ends: 63 [2020-07-20 17:52:29,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 17:52:29,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-20 17:52:29,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2020-07-20 17:52:29,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-07-20 17:52:29,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-07-20 17:52:29,023 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 44 [2020-07-20 17:52:29,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:52:29,023 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-07-20 17:52:29,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:52:29,023 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-07-20 17:52:29,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-20 17:52:29,024 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:52:29,024 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-20 17:52:29,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:29,225 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:52:29,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:52:29,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1562566919, now seen corresponding path program 1 times [2020-07-20 17:52:29,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:52:29,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101975130] [2020-07-20 17:52:29,226 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:29,269 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:52:29,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:52:29,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 17:52:29,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:52:29,296 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 17:52:29,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:52:29,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:52:29,318 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:52:29,327 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:52:29,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:52:29,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101975130] [2020-07-20 17:52:29,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 17:52:29,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-07-20 17:52:29,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465032914] [2020-07-20 17:52:29,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:52:29,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:52:29,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:52:29,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:52:29,347 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 5 states. [2020-07-20 17:52:29,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:52:29,422 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2020-07-20 17:52:29,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 17:52:29,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-07-20 17:52:29,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:52:29,426 INFO L225 Difference]: With dead ends: 51 [2020-07-20 17:52:29,426 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 17:52:29,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 77 SyntacticMatches, 7 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 17:52:29,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 17:52:29,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 17:52:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 17:52:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 17:52:29,428 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-07-20 17:52:29,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:52:29,428 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 17:52:29,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:52:29,428 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 17:52:29,428 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 17:52:29,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:52:29,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 17:52:29,908 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 91 [2020-07-20 17:52:30,409 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2020-07-20 17:52:30,575 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 26 [2020-07-20 17:52:30,874 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-07-20 17:52:30,877 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 17:52:30,877 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 17:52:30,877 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 17:52:30,877 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 17:52:30,877 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 17:52:30,877 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 17:52:30,877 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 17:52:30,878 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-20 17:52:30,878 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-20 17:52:30,878 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-07-20 17:52:30,878 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-20 17:52:30,878 INFO L268 CegarLoopResult]: For program point L192(lines 192 352) no Hoare annotation was computed. [2020-07-20 17:52:30,878 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 123) no Hoare annotation was computed. [2020-07-20 17:52:30,878 INFO L268 CegarLoopResult]: For program point L382(lines 382 391) no Hoare annotation was computed. [2020-07-20 17:52:30,878 INFO L268 CegarLoopResult]: For program point L93(lines 93 410) no Hoare annotation was computed. [2020-07-20 17:52:30,878 INFO L268 CegarLoopResult]: For program point L27(lines 27 435) no Hoare annotation was computed. [2020-07-20 17:52:30,878 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 437) no Hoare annotation was computed. [2020-07-20 17:52:30,878 INFO L268 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-07-20 17:52:30,879 INFO L264 CegarLoopResult]: At program point L399(lines 129 400) the Hoare annotation is: (let ((.cse6 (+ main_~main__cp~0 1))) (let ((.cse0 (<= 1 main_~__VERIFIER_assert__cond~1)) (.cse1 (<= 0 main_~main__scheme~0)) (.cse2 (<= .cse6 main_~main__urilen~0)) (.cse3 (= 1 main_~__VERIFIER_assert__cond~3)) (.cse4 (not (= 0 main_~main__scheme~0))) (.cse5 (<= 1 main_~main__cp~0)) (.cse7 (<= 1 main_~__VERIFIER_assert__cond~2)) (.cse8 (<= 1 main_~__VERIFIER_assert__cond~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= .cse6 main_~main__urilen~0) .cse7 .cse8) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse7 .cse8 (= 1 main_~__VERIFIER_assert__cond~1))))) [2020-07-20 17:52:30,879 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 253) no Hoare annotation was computed. [2020-07-20 17:52:30,879 INFO L268 CegarLoopResult]: For program point L102(lines 102 409) no Hoare annotation was computed. [2020-07-20 17:52:30,879 INFO L268 CegarLoopResult]: For program point L69(lines 69 414) no Hoare annotation was computed. [2020-07-20 17:52:30,879 INFO L264 CegarLoopResult]: At program point L325(lines 260 326) the Hoare annotation is: (and (= main_~__VERIFIER_assert__cond~10 1) (let ((.cse0 (<= 0 main_~main__scheme~0)) (.cse1 (= 1 main_~__VERIFIER_assert__cond~9)) (.cse2 (not (= (+ main_~main__cp~0 1) main_~main__urilen~0))) (.cse3 (= 1 main_~__VERIFIER_assert__cond~3)) (.cse4 (<= 1 main_~__VERIFIER_assert__cond~4)) (.cse5 (<= 1 main_~__VERIFIER_assert__cond~0)) (.cse6 (= 1 main_~__VERIFIER_assert__cond~1)) (.cse7 (<= 1 main_~__VERIFIER_assert__cond~6)) (.cse8 (<= 2 main_~main__cp~0)) (.cse9 (= 1 main_~__VERIFIER_assert__cond~5)) (.cse10 (<= 1 main_~__VERIFIER_assert__cond~8)) (.cse11 (not (= 0 main_~main__scheme~0))) (.cse12 (<= 1 main_~__VERIFIER_assert__cond~7)) (.cse13 (<= 1 main_~__VERIFIER_assert__cond~2))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= 1 main_~__VERIFIER_assert__cond~12) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse0 .cse1 .cse2 (< (+ main_~main__c~0 1) main_~main__tokenlen~0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13))) (<= 0 main_~main__c~0) (< main_~main__cp~0 main_~main__urilen~0) (= main_~__VERIFIER_assert__cond~11 1)) [2020-07-20 17:52:30,879 INFO L268 CegarLoopResult]: For program point L292(lines 292 316) no Hoare annotation was computed. [2020-07-20 17:52:30,879 INFO L268 CegarLoopResult]: For program point L160(lines 160 357) no Hoare annotation was computed. [2020-07-20 17:52:30,880 INFO L268 CegarLoopResult]: For program point L61(lines 61 420) no Hoare annotation was computed. [2020-07-20 17:52:30,880 INFO L268 CegarLoopResult]: For program point L251(lines 251 327) no Hoare annotation was computed. [2020-07-20 17:52:30,880 INFO L268 CegarLoopResult]: For program point L185(lines 185 353) no Hoare annotation was computed. [2020-07-20 17:52:30,880 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-07-20 17:52:30,880 INFO L264 CegarLoopResult]: At program point L408(lines 102 409) the Hoare annotation is: (<= 1 main_~__VERIFIER_assert__cond~0) [2020-07-20 17:52:30,880 INFO L268 CegarLoopResult]: For program point L210(lines 210 344) no Hoare annotation was computed. [2020-07-20 17:52:30,880 INFO L268 CegarLoopResult]: For program point L111(line 111) no Hoare annotation was computed. [2020-07-20 17:52:30,880 INFO L268 CegarLoopResult]: For program point L45(lines 45 432) no Hoare annotation was computed. [2020-07-20 17:52:30,880 INFO L268 CegarLoopResult]: For program point L268(lines 268 320) no Hoare annotation was computed. [2020-07-20 17:52:30,880 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 294) no Hoare annotation was computed. [2020-07-20 17:52:30,881 INFO L268 CegarLoopResult]: For program point L202(lines 202 351) no Hoare annotation was computed. [2020-07-20 17:52:30,881 INFO L268 CegarLoopResult]: For program point L260(lines 260 326) no Hoare annotation was computed. [2020-07-20 17:52:30,881 INFO L268 CegarLoopResult]: For program point L384(line 384) no Hoare annotation was computed. [2020-07-20 17:52:30,881 INFO L268 CegarLoopResult]: For program point L95(line 95) no Hoare annotation was computed. [2020-07-20 17:52:30,881 INFO L268 CegarLoopResult]: For program point L153(lines 153 358) no Hoare annotation was computed. [2020-07-20 17:52:30,881 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 155) no Hoare annotation was computed. [2020-07-20 17:52:30,881 INFO L268 CegarLoopResult]: For program point L21(lines 21 436) no Hoare annotation was computed. [2020-07-20 17:52:30,881 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 437) no Hoare annotation was computed. [2020-07-20 17:52:30,881 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 282) no Hoare annotation was computed. [2020-07-20 17:52:30,881 INFO L268 CegarLoopResult]: For program point L294(line 294) no Hoare annotation was computed. [2020-07-20 17:52:30,882 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2020-07-20 17:52:30,882 INFO L268 CegarLoopResult]: For program point L63(lines 63 415) no Hoare annotation was computed. [2020-07-20 17:52:30,882 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 437) the Hoare annotation is: true [2020-07-20 17:52:30,882 INFO L268 CegarLoopResult]: For program point L253(line 253) no Hoare annotation was computed. [2020-07-20 17:52:30,882 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-20 17:52:30,882 INFO L268 CegarLoopResult]: For program point L121(lines 121 401) no Hoare annotation was computed. [2020-07-20 17:52:30,882 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-07-20 17:52:30,882 INFO L268 CegarLoopResult]: For program point L270(line 270) no Hoare annotation was computed. [2020-07-20 17:52:30,882 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 212) no Hoare annotation was computed. [2020-07-20 17:52:30,882 INFO L268 CegarLoopResult]: For program point L39(lines 39 433) no Hoare annotation was computed. [2020-07-20 17:52:30,882 INFO L268 CegarLoopResult]: For program point mainErr16ASSERT_VIOLATIONERROR_FUNCTION(line 372) no Hoare annotation was computed. [2020-07-20 17:52:30,882 INFO L268 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-07-20 17:52:30,882 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 187) no Hoare annotation was computed. [2020-07-20 17:52:30,883 INFO L268 CegarLoopResult]: For program point L370(lines 370 393) no Hoare annotation was computed. [2020-07-20 17:52:30,883 INFO L268 CegarLoopResult]: For program point L81(lines 81 412) no Hoare annotation was computed. [2020-07-20 17:52:30,883 INFO L268 CegarLoopResult]: For program point L304(lines 304 314) no Hoare annotation was computed. [2020-07-20 17:52:30,883 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 306) no Hoare annotation was computed. [2020-07-20 17:52:30,883 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 111) no Hoare annotation was computed. [2020-07-20 17:52:30,883 INFO L268 CegarLoopResult]: For program point L222(lines 222 342) no Hoare annotation was computed. [2020-07-20 17:52:30,883 INFO L268 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2020-07-20 17:52:30,883 INFO L268 CegarLoopResult]: For program point L57(lines 57 430) no Hoare annotation was computed. [2020-07-20 17:52:30,883 INFO L264 CegarLoopResult]: At program point L313(lines 228 342) the Hoare annotation is: (let ((.cse17 (+ main_~main__cp~0 1))) (let ((.cse1 (<= 0 main_~main__scheme~0)) (.cse2 (= 1 main_~__VERIFIER_assert__cond~9)) (.cse3 (<= 1 main_~__VERIFIER_assert__cond~4)) (.cse4 (= 1 main_~__VERIFIER_assert__cond~3)) (.cse5 (<= 1 main_~__VERIFIER_assert__cond~0)) (.cse6 (= 1 main_~__VERIFIER_assert__cond~1)) (.cse7 (<= 1 main_~__VERIFIER_assert__cond~6)) (.cse8 (<= 2 main_~main__cp~0)) (.cse9 (= 1 main_~__VERIFIER_assert__cond~5)) (.cse0 (<= 0 main_~main__c~0)) (.cse10 (<= .cse17 main_~main__urilen~0)) (.cse11 (<= 1 main_~__VERIFIER_assert__cond~8)) (.cse12 (not (= 0 main_~main__scheme~0))) (.cse13 (<= 1 main_~main__cp~0)) (.cse14 (<= 1 main_~__VERIFIER_assert__cond~7)) (.cse16 (<= 1 main_~__VERIFIER_assert__cond~2))) (or (and (<= 1 main_~__VERIFIER_assert__cond~10) .cse0 (let ((.cse15 (<= 1 main_~__VERIFIER_assert__cond~9))) (or (and .cse1 .cse2 (< (+ main_~main__c~0 1) main_~main__tokenlen~0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16) (and .cse1 .cse2 .cse3 .cse4 (<= 1 main_~__VERIFIER_assert__cond~12) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16))) (= main_~__VERIFIER_assert__cond~11 1)) (and .cse1 .cse2 (not (= .cse17 main_~main__urilen~0)) .cse3 .cse4 (= 1 main_~__VERIFIER_assert__cond~8) .cse5 .cse6 .cse7 .cse8 .cse9 .cse0 .cse10 .cse11 .cse12 .cse13 .cse14 .cse16)))) [2020-07-20 17:52:30,883 INFO L268 CegarLoopResult]: For program point L280(lines 280 318) no Hoare annotation was computed. [2020-07-20 17:52:30,883 INFO L268 CegarLoopResult]: For program point L239(lines 239 329) no Hoare annotation was computed. [2020-07-20 17:52:30,884 INFO L268 CegarLoopResult]: For program point L173(lines 173 355) no Hoare annotation was computed. [2020-07-20 17:52:30,884 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 241) no Hoare annotation was computed. [2020-07-20 17:52:30,884 INFO L268 CegarLoopResult]: For program point L33(lines 33 434) no Hoare annotation was computed. [2020-07-20 17:52:30,884 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 95) no Hoare annotation was computed. [2020-07-20 17:52:30,884 INFO L268 CegarLoopResult]: For program point L372(line 372) no Hoare annotation was computed. [2020-07-20 17:52:30,884 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-07-20 17:52:30,884 INFO L268 CegarLoopResult]: For program point L306(line 306) no Hoare annotation was computed. [2020-07-20 17:52:30,884 INFO L268 CegarLoopResult]: For program point L141(lines 141 360) no Hoare annotation was computed. [2020-07-20 17:52:30,884 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 224) no Hoare annotation was computed. [2020-07-20 17:52:30,884 INFO L268 CegarLoopResult]: For program point L232(lines 232 336) no Hoare annotation was computed. [2020-07-20 17:52:30,884 INFO L268 CegarLoopResult]: For program point mainErr17ASSERT_VIOLATIONERROR_FUNCTION(line 384) no Hoare annotation was computed. [2020-07-20 17:52:30,884 INFO L268 CegarLoopResult]: For program point L133(lines 133 395) no Hoare annotation was computed. [2020-07-20 17:52:30,884 INFO L268 CegarLoopResult]: For program point L224(line 224) no Hoare annotation was computed. [2020-07-20 17:52:30,885 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 143) no Hoare annotation was computed. [2020-07-20 17:52:30,885 INFO L268 CegarLoopResult]: For program point L59(lines 59 425) no Hoare annotation was computed. [2020-07-20 17:52:30,885 INFO L268 CegarLoopResult]: For program point L282(line 282) no Hoare annotation was computed. [2020-07-20 17:52:30,885 INFO L268 CegarLoopResult]: For program point L51(lines 51 431) no Hoare annotation was computed. [2020-07-20 17:52:30,885 INFO L268 CegarLoopResult]: For program point L241(line 241) no Hoare annotation was computed. [2020-07-20 17:52:30,885 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 270) no Hoare annotation was computed. [2020-07-20 17:52:30,885 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-20 17:52:30,885 INFO L268 CegarLoopResult]: For program point L109(lines 109 403) no Hoare annotation was computed. [2020-07-20 17:52:30,885 INFO L264 CegarLoopResult]: At program point L390(lines 127 401) the Hoare annotation is: (and (<= 0 main_~main__scheme~0) (< main_~main__cp~0 main_~main__urilen~0) (= 1 main_~__VERIFIER_assert__cond~3) (not (= 0 main_~main__scheme~0)) (<= 1 main_~main__cp~0) (<= 1 main_~__VERIFIER_assert__cond~2) (<= 1 main_~__VERIFIER_assert__cond~0) (= 1 main_~__VERIFIER_assert__cond~1)) [2020-07-20 17:52:30,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:52:30 BoogieIcfgContainer [2020-07-20 17:52:30,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 17:52:30,910 INFO L168 Benchmark]: Toolchain (without parser) took 11221.66 ms. Allocated memory was 146.3 MB in the beginning and 289.4 MB in the end (delta: 143.1 MB). Free memory was 104.4 MB in the beginning and 136.2 MB in the end (delta: -31.7 MB). Peak memory consumption was 134.8 MB. Max. memory is 7.1 GB. [2020-07-20 17:52:30,910 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 17:52:30,911 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.65 ms. Allocated memory is still 146.3 MB. Free memory was 104.0 MB in the beginning and 91.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-07-20 17:52:30,911 INFO L168 Benchmark]: Boogie Preprocessor took 134.52 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 91.1 MB in the beginning and 180.2 MB in the end (delta: -89.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-20 17:52:30,912 INFO L168 Benchmark]: RCFGBuilder took 470.75 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 151.9 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2020-07-20 17:52:30,912 INFO L168 Benchmark]: TraceAbstraction took 10249.29 ms. Allocated memory was 202.9 MB in the beginning and 289.4 MB in the end (delta: 86.5 MB). Free memory was 151.9 MB in the beginning and 136.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 125.6 MB. Max. memory is 7.1 GB. [2020-07-20 17:52:30,915 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 360.65 ms. Allocated memory is still 146.3 MB. Free memory was 104.0 MB in the beginning and 91.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.52 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 91.1 MB in the beginning and 180.2 MB in the end (delta: -89.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 470.75 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 151.9 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10249.29 ms. Allocated memory was 202.9 MB in the beginning and 289.4 MB in the end (delta: 86.5 MB). Free memory was 151.9 MB in the beginning and 136.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 125.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 83]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 306]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 372]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 187]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 212]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 282]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 224]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 241]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 294]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 270]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 143]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 253]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 384]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 111]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 175]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 155]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 123]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 95]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: ((((((0 <= main__scheme && main__cp < main__urilen) && 1 == __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond - InvariantResult [Line: 102]: Loop Invariant Derived loop invariant: 1 <= __VERIFIER_assert__cond - InvariantResult [Line: 228]: Loop Invariant Derived loop invariant: (((1 <= __VERIFIER_assert__cond && 0 <= main__c) && (((((((((((((((((0 <= main__scheme && 1 == __VERIFIER_assert__cond) && main__c + 1 < main__tokenlen) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 2 <= main__cp) && 1 == __VERIFIER_assert__cond) && main__cp + 1 <= main__urilen) && 1 <= __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) || ((((((((((((((((0 <= main__scheme && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 2 <= main__cp) && 1 == __VERIFIER_assert__cond) && main__cp + 1 <= main__urilen) && 1 <= __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond))) && __VERIFIER_assert__cond == 1) || (((((((((((((((((0 <= main__scheme && 1 == __VERIFIER_assert__cond) && !(main__cp + 1 == main__urilen)) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 2 <= main__cp) && 1 == __VERIFIER_assert__cond) && 0 <= main__c) && main__cp + 1 <= main__urilen) && 1 <= __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: ((((((((1 <= __VERIFIER_assert__cond && 0 <= main__scheme) && main__cp + 1 <= main__urilen) && 1 == __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= main__cp) && main__cp + 1 == main__urilen) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) || ((((((((1 <= __VERIFIER_assert__cond && 0 <= main__scheme) && main__cp + 1 <= main__urilen) && 1 == __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) - InvariantResult [Line: 260]: Loop Invariant Derived loop invariant: (((__VERIFIER_assert__cond == 1 && (((((((((((((((0 <= main__scheme && 1 == __VERIFIER_assert__cond) && !(main__cp + 1 == main__urilen)) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 2 <= main__cp) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) || ((((((((((((((0 <= main__scheme && 1 == __VERIFIER_assert__cond) && !(main__cp + 1 == main__urilen)) && main__c + 1 < main__tokenlen) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 2 <= main__cp) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond))) && 0 <= main__c) && main__cp < main__urilen) && __VERIFIER_assert__cond == 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 91 locations, 18 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.9s, OverallIterations: 22, TraceHistogramMax: 2, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1295 SDtfs, 2006 SDslu, 1478 SDs, 0 SdLazy, 960 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 824 GetRequests, 709 SyntacticMatches, 18 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 22 MinimizatonAttempts, 327 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 399 HoareAnnotationTreeSize, 9 FomulaSimplifications, 456711 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 9 FomulaSimplificationsInter, 21334 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 701 NumberOfCodeBlocks, 688 NumberOfCodeBlocksAsserted, 86 NumberOfCheckSat, 781 ConstructedInterpolants, 0 QuantifiedInterpolants, 70856 SizeOfPredicates, 113 NumberOfNonLiveVariables, 2358 ConjunctsInSsa, 166 ConjunctsInUnsatCore, 25 InterpolantComputations, 19 PerfectInterpolantSequences, 4/16 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...