/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:51:15,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:51:15,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:51:15,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:51:15,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:51:15,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:51:15,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:51:15,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:51:15,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:51:15,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:51:15,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:51:15,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:51:15,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:51:15,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:51:15,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:51:15,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:51:15,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:51:15,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:51:15,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:51:15,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:51:15,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:51:15,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:51:15,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:51:15,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:51:15,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:51:15,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:51:15,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:51:15,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:51:15,578 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 11:51:15,593 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:51:15,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:51:15,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:51:15,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:51:15,594 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:51:15,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:51:15,595 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:51:15,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:51:15,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:51:15,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:51:15,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:51:15,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:51:15,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:51:15,596 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:51:15,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:51:15,597 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:51:15,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:51:15,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:51:15,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:51:15,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:51:15,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:51:15,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:51:15,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:51:15,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:51:15,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:51:15,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:51:15,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:15,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:51:15,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:51:15,600 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 -> NOT_INCREMENTALLY [2020-07-20 11:51:15,855 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:51:15,872 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:51:15,875 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:51:15,877 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:51:15,879 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:51:15,880 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-07-20 11:51:15,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/976227148/ef3d1fb3187f4b92ac44f6b522ca3f4c/FLAG6ee3400b7 [2020-07-20 11:51:16,477 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:51:16,478 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-07-20 11:51:16,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/976227148/ef3d1fb3187f4b92ac44f6b522ca3f4c/FLAG6ee3400b7 [2020-07-20 11:51:16,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/976227148/ef3d1fb3187f4b92ac44f6b522ca3f4c [2020-07-20 11:51:16,815 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:51:16,818 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:51:16,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:51:16,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:51:16,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:51:16,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:51:16" (1/1) ... [2020-07-20 11:51:16,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f165e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:51:16, skipping insertion in model container [2020-07-20 11:51:16,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:51:16" (1/1) ... [2020-07-20 11:51:16,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:51:16,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:51:17,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:51:17,159 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:51:17,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:51:17,356 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:51:17,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:51:17 WrapperNode [2020-07-20 11:51:17,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:51:17,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:51:17,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:51:17,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:51:17,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:51:17" (1/1) ... [2020-07-20 11:51:17,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:51:17" (1/1) ... [2020-07-20 11:51:17,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:51:17" (1/1) ... [2020-07-20 11:51:17,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:51:17" (1/1) ... [2020-07-20 11:51:17,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:51:17" (1/1) ... [2020-07-20 11:51:17,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:51:17" (1/1) ... [2020-07-20 11:51:17,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:51:17" (1/1) ... [2020-07-20 11:51:17,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:51:17,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:51:17,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:51:17,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:51:17,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:51:17" (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 11:51:17,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:51:17,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:51:17,479 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 11:51:17,479 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:51:17,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:51:17,479 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 11:51:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 11:51:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 11:51:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:51:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:51:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:51:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:51:18,223 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:51:18,224 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 11:51:18,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:51:18 BoogieIcfgContainer [2020-07-20 11:51:18,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:51:18,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:51:18,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:51:18,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:51:18,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:51:16" (1/3) ... [2020-07-20 11:51:18,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b31122c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:51:18, skipping insertion in model container [2020-07-20 11:51:18,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:51:17" (2/3) ... [2020-07-20 11:51:18,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b31122c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:51:18, skipping insertion in model container [2020-07-20 11:51:18,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:51:18" (3/3) ... [2020-07-20 11:51:18,239 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.p+lhb-reducer.c [2020-07-20 11:51:18,252 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:51:18,264 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-07-20 11:51:18,282 INFO L251 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-07-20 11:51:18,309 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:51:18,309 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:51:18,309 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:51:18,309 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:51:18,310 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:51:18,310 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:51:18,310 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:51:18,310 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:51:18,340 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2020-07-20 11:51:18,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 11:51:18,346 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:18,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:18,348 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:18,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:18,355 INFO L82 PathProgramCache]: Analyzing trace with hash 692755954, now seen corresponding path program 1 times [2020-07-20 11:51:18,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:18,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537194606] [2020-07-20 11:51:18,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 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 11:51:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:18,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:51:18,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:18,520 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:18,540 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 11:51:18,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:18,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537194606] [2020-07-20 11:51:18,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:18,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:51:18,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922138790] [2020-07-20 11:51:18,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:51:18,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:18,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:51:18,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:51:18,566 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 4 states. [2020-07-20 11:51:18,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:18,952 INFO L93 Difference]: Finished difference Result 135 states and 211 transitions. [2020-07-20 11:51:18,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 11:51:18,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-07-20 11:51:18,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:18,978 INFO L225 Difference]: With dead ends: 135 [2020-07-20 11:51:18,978 INFO L226 Difference]: Without dead ends: 118 [2020-07-20 11:51:18,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 11:51:19,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-07-20 11:51:19,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-07-20 11:51:19,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-07-20 11:51:19,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 139 transitions. [2020-07-20 11:51:19,064 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 139 transitions. Word has length 11 [2020-07-20 11:51:19,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:19,064 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 139 transitions. [2020-07-20 11:51:19,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:51:19,064 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 139 transitions. [2020-07-20 11:51:19,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 11:51:19,067 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:19,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:19,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:19,271 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:19,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:19,272 INFO L82 PathProgramCache]: Analyzing trace with hash 601163, now seen corresponding path program 1 times [2020-07-20 11:51:19,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:19,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718624122] [2020-07-20 11:51:19,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 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 11:51:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:19,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:51:19,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:19,352 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:19,354 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:19,364 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 11:51:19,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:19,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718624122] [2020-07-20 11:51:19,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:19,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:51:19,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105957149] [2020-07-20 11:51:19,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:51:19,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:19,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:51:19,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:51:19,371 INFO L87 Difference]: Start difference. First operand 118 states and 139 transitions. Second operand 4 states. [2020-07-20 11:51:19,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:19,531 INFO L93 Difference]: Finished difference Result 118 states and 139 transitions. [2020-07-20 11:51:19,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 11:51:19,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-20 11:51:19,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:19,534 INFO L225 Difference]: With dead ends: 118 [2020-07-20 11:51:19,534 INFO L226 Difference]: Without dead ends: 113 [2020-07-20 11:51:19,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 11:51:19,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-07-20 11:51:19,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-07-20 11:51:19,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-07-20 11:51:19,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 125 transitions. [2020-07-20 11:51:19,546 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 125 transitions. Word has length 12 [2020-07-20 11:51:19,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:19,547 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 125 transitions. [2020-07-20 11:51:19,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:51:19,547 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 125 transitions. [2020-07-20 11:51:19,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 11:51:19,548 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:19,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:19,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:19,762 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:19,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:19,763 INFO L82 PathProgramCache]: Analyzing trace with hash -438066310, now seen corresponding path program 1 times [2020-07-20 11:51:19,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:19,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318801107] [2020-07-20 11:51:19,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 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 11:51:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:19,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:51:19,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:19,834 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:19,836 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:19,843 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 11:51:19,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:19,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318801107] [2020-07-20 11:51:19,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:19,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:51:19,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341125721] [2020-07-20 11:51:19,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:51:19,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:19,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:51:19,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:51:19,846 INFO L87 Difference]: Start difference. First operand 113 states and 125 transitions. Second operand 5 states. [2020-07-20 11:51:20,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:20,077 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2020-07-20 11:51:20,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:51:20,078 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-07-20 11:51:20,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:20,079 INFO L225 Difference]: With dead ends: 113 [2020-07-20 11:51:20,079 INFO L226 Difference]: Without dead ends: 111 [2020-07-20 11:51:20,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 11:51:20,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-07-20 11:51:20,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-07-20 11:51:20,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-07-20 11:51:20,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2020-07-20 11:51:20,093 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 15 [2020-07-20 11:51:20,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:20,093 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2020-07-20 11:51:20,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:51:20,093 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2020-07-20 11:51:20,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 11:51:20,094 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:20,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:20,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:20,296 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:20,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:20,297 INFO L82 PathProgramCache]: Analyzing trace with hash -695150622, now seen corresponding path program 1 times [2020-07-20 11:51:20,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:20,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231665] [2020-07-20 11:51:20,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 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 11:51:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:20,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:51:20,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:20,371 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:20,382 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 11:51:20,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:20,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231665] [2020-07-20 11:51:20,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:20,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:51:20,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528840918] [2020-07-20 11:51:20,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:51:20,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:20,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:51:20,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:51:20,385 INFO L87 Difference]: Start difference. First operand 111 states and 123 transitions. Second operand 4 states. [2020-07-20 11:51:20,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:20,554 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2020-07-20 11:51:20,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 11:51:20,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-07-20 11:51:20,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:20,556 INFO L225 Difference]: With dead ends: 111 [2020-07-20 11:51:20,556 INFO L226 Difference]: Without dead ends: 107 [2020-07-20 11:51:20,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 11:51:20,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-07-20 11:51:20,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-07-20 11:51:20,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-07-20 11:51:20,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 119 transitions. [2020-07-20 11:51:20,565 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 119 transitions. Word has length 16 [2020-07-20 11:51:20,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:20,565 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 119 transitions. [2020-07-20 11:51:20,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:51:20,565 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 119 transitions. [2020-07-20 11:51:20,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 11:51:20,566 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:20,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:20,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:20,782 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:20,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:20,783 INFO L82 PathProgramCache]: Analyzing trace with hash -61564757, now seen corresponding path program 1 times [2020-07-20 11:51:20,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:20,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537592181] [2020-07-20 11:51:20,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 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 11:51:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:20,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:51:20,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:20,855 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:20,866 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 11:51:20,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:20,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537592181] [2020-07-20 11:51:20,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:20,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:51:20,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125658847] [2020-07-20 11:51:20,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:51:20,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:20,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:51:20,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:51:20,868 INFO L87 Difference]: Start difference. First operand 107 states and 119 transitions. Second operand 5 states. [2020-07-20 11:51:21,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:21,078 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2020-07-20 11:51:21,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:51:21,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-20 11:51:21,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:21,081 INFO L225 Difference]: With dead ends: 125 [2020-07-20 11:51:21,081 INFO L226 Difference]: Without dead ends: 123 [2020-07-20 11:51:21,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 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 11:51:21,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-07-20 11:51:21,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 105. [2020-07-20 11:51:21,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-07-20 11:51:21,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2020-07-20 11:51:21,101 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 17 [2020-07-20 11:51:21,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:21,102 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2020-07-20 11:51:21,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:51:21,102 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2020-07-20 11:51:21,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 11:51:21,105 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:21,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:21,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:21,306 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:21,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:21,307 INFO L82 PathProgramCache]: Analyzing trace with hash -60025557, now seen corresponding path program 1 times [2020-07-20 11:51:21,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:21,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122481159] [2020-07-20 11:51:21,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 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 11:51:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:21,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:51:21,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:21,375 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:21,391 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 11:51:21,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:21,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122481159] [2020-07-20 11:51:21,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:21,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:51:21,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133019549] [2020-07-20 11:51:21,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:51:21,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:21,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:51:21,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:51:21,395 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand 5 states. [2020-07-20 11:51:21,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:21,583 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2020-07-20 11:51:21,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:51:21,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-20 11:51:21,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:21,585 INFO L225 Difference]: With dead ends: 105 [2020-07-20 11:51:21,585 INFO L226 Difference]: Without dead ends: 103 [2020-07-20 11:51:21,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 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 11:51:21,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-07-20 11:51:21,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-07-20 11:51:21,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-07-20 11:51:21,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions. [2020-07-20 11:51:21,592 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 17 [2020-07-20 11:51:21,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:21,592 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions. [2020-07-20 11:51:21,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:51:21,592 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions. [2020-07-20 11:51:21,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 11:51:21,593 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:21,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:21,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:21,806 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:21,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:21,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1907138927, now seen corresponding path program 1 times [2020-07-20 11:51:21,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:21,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077288203] [2020-07-20 11:51:21,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 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 11:51:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:21,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:51:21,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:21,875 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:21,883 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 11:51:21,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:21,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077288203] [2020-07-20 11:51:21,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:21,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:51:21,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179742599] [2020-07-20 11:51:21,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:51:21,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:21,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:51:21,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:51:21,886 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand 5 states. [2020-07-20 11:51:22,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:22,081 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2020-07-20 11:51:22,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:51:22,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-20 11:51:22,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:22,083 INFO L225 Difference]: With dead ends: 124 [2020-07-20 11:51:22,083 INFO L226 Difference]: Without dead ends: 122 [2020-07-20 11:51:22,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 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 11:51:22,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-20 11:51:22,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 101. [2020-07-20 11:51:22,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-07-20 11:51:22,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2020-07-20 11:51:22,089 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 18 [2020-07-20 11:51:22,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:22,090 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2020-07-20 11:51:22,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:51:22,090 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2020-07-20 11:51:22,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 11:51:22,091 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:22,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:22,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:22,303 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:22,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:22,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1908504347, now seen corresponding path program 1 times [2020-07-20 11:51:22,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:22,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556179414] [2020-07-20 11:51:22,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 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 11:51:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:22,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 11:51:22,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:22,408 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:22,412 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:22,418 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 11:51:22,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:22,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556179414] [2020-07-20 11:51:22,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:22,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 11:51:22,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888702255] [2020-07-20 11:51:22,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:51:22,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:22,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:51:22,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:51:22,422 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 6 states. [2020-07-20 11:51:22,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:22,673 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2020-07-20 11:51:22,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:51:22,673 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-20 11:51:22,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:22,674 INFO L225 Difference]: With dead ends: 141 [2020-07-20 11:51:22,675 INFO L226 Difference]: Without dead ends: 139 [2020-07-20 11:51:22,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:51:22,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-07-20 11:51:22,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 107. [2020-07-20 11:51:22,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-07-20 11:51:22,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2020-07-20 11:51:22,686 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 18 [2020-07-20 11:51:22,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:22,687 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2020-07-20 11:51:22,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:51:22,687 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2020-07-20 11:51:22,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 11:51:22,688 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:22,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:22,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:22,896 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:22,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:22,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1860789097, now seen corresponding path program 1 times [2020-07-20 11:51:22,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:22,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089416422] [2020-07-20 11:51:22,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 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 11:51:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:22,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 11:51:22,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:22,997 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:23,001 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:23,009 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 11:51:23,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:23,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089416422] [2020-07-20 11:51:23,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:23,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 11:51:23,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734623425] [2020-07-20 11:51:23,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:51:23,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:23,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:51:23,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:51:23,011 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand 6 states. [2020-07-20 11:51:23,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:23,192 INFO L93 Difference]: Finished difference Result 117 states and 131 transitions. [2020-07-20 11:51:23,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 11:51:23,193 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-20 11:51:23,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:23,194 INFO L225 Difference]: With dead ends: 117 [2020-07-20 11:51:23,194 INFO L226 Difference]: Without dead ends: 113 [2020-07-20 11:51:23,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:51:23,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-07-20 11:51:23,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 108. [2020-07-20 11:51:23,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-07-20 11:51:23,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 122 transitions. [2020-07-20 11:51:23,200 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 122 transitions. Word has length 18 [2020-07-20 11:51:23,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:23,200 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 122 transitions. [2020-07-20 11:51:23,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:51:23,200 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 122 transitions. [2020-07-20 11:51:23,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 11:51:23,204 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:23,204 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 11:51:23,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:23,415 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:23,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:23,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1008238558, now seen corresponding path program 1 times [2020-07-20 11:51:23,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:23,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147868193] [2020-07-20 11:51:23,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 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 11:51:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:23,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 11:51:23,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:23,531 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:23,533 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:23,540 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 11:51:23,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:23,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147868193] [2020-07-20 11:51:23,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:23,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 11:51:23,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607001219] [2020-07-20 11:51:23,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:51:23,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:23,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:51:23,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:51:23,543 INFO L87 Difference]: Start difference. First operand 108 states and 122 transitions. Second operand 6 states. [2020-07-20 11:51:23,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:23,722 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2020-07-20 11:51:23,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:51:23,722 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-07-20 11:51:23,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:23,724 INFO L225 Difference]: With dead ends: 135 [2020-07-20 11:51:23,724 INFO L226 Difference]: Without dead ends: 133 [2020-07-20 11:51:23,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:51:23,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-07-20 11:51:23,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 111. [2020-07-20 11:51:23,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-07-20 11:51:23,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2020-07-20 11:51:23,729 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 19 [2020-07-20 11:51:23,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:23,730 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2020-07-20 11:51:23,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:51:23,730 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2020-07-20 11:51:23,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 11:51:23,731 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:23,731 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 11:51:23,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:23,943 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:23,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:23,943 INFO L82 PathProgramCache]: Analyzing trace with hash -121545016, now seen corresponding path program 1 times [2020-07-20 11:51:23,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:23,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92043161] [2020-07-20 11:51:23,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 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 11:51:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:23,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:51:23,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:24,016 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:24,025 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 11:51:24,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:24,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92043161] [2020-07-20 11:51:24,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:24,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 11:51:24,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343129204] [2020-07-20 11:51:24,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:51:24,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:24,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:51:24,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:51:24,029 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand 6 states. [2020-07-20 11:51:24,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:24,223 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2020-07-20 11:51:24,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 11:51:24,223 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-07-20 11:51:24,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:24,224 INFO L225 Difference]: With dead ends: 111 [2020-07-20 11:51:24,225 INFO L226 Difference]: Without dead ends: 109 [2020-07-20 11:51:24,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 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 11:51:24,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-20 11:51:24,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-07-20 11:51:24,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-07-20 11:51:24,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 123 transitions. [2020-07-20 11:51:24,230 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 123 transitions. Word has length 20 [2020-07-20 11:51:24,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:24,231 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 123 transitions. [2020-07-20 11:51:24,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:51:24,231 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 123 transitions. [2020-07-20 11:51:24,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 11:51:24,232 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:24,232 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] [2020-07-20 11:51:24,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:24,443 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:24,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:24,443 INFO L82 PathProgramCache]: Analyzing trace with hash 527074935, now seen corresponding path program 1 times [2020-07-20 11:51:24,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:24,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792287458] [2020-07-20 11:51:24,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 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 11:51:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:24,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:51:24,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:24,510 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:24,516 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 11:51:24,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:24,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792287458] [2020-07-20 11:51:24,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:24,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:51:24,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727896519] [2020-07-20 11:51:24,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:51:24,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:24,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:51:24,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:51:24,519 INFO L87 Difference]: Start difference. First operand 109 states and 123 transitions. Second operand 4 states. [2020-07-20 11:51:24,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:24,638 INFO L93 Difference]: Finished difference Result 109 states and 123 transitions. [2020-07-20 11:51:24,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 11:51:24,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-07-20 11:51:24,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:24,640 INFO L225 Difference]: With dead ends: 109 [2020-07-20 11:51:24,640 INFO L226 Difference]: Without dead ends: 105 [2020-07-20 11:51:24,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 11:51:24,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-07-20 11:51:24,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-07-20 11:51:24,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-07-20 11:51:24,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2020-07-20 11:51:24,646 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 21 [2020-07-20 11:51:24,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:24,647 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2020-07-20 11:51:24,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:51:24,647 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2020-07-20 11:51:24,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 11:51:24,648 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:24,648 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 11:51:24,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:24,854 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:24,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:24,855 INFO L82 PathProgramCache]: Analyzing trace with hash -827305924, now seen corresponding path program 1 times [2020-07-20 11:51:24,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:24,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288200588] [2020-07-20 11:51:24,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 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 11:51:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:24,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 11:51:24,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:24,997 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:24,999 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:25,009 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 11:51:25,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:25,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288200588] [2020-07-20 11:51:25,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:25,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 11:51:25,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119922723] [2020-07-20 11:51:25,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 11:51:25,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:25,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 11:51:25,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:51:25,011 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand 8 states. [2020-07-20 11:51:25,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:25,287 INFO L93 Difference]: Finished difference Result 155 states and 175 transitions. [2020-07-20 11:51:25,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 11:51:25,288 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-07-20 11:51:25,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:25,289 INFO L225 Difference]: With dead ends: 155 [2020-07-20 11:51:25,289 INFO L226 Difference]: Without dead ends: 153 [2020-07-20 11:51:25,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-20 11:51:25,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-07-20 11:51:25,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 114. [2020-07-20 11:51:25,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-07-20 11:51:25,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-07-20 11:51:25,295 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 22 [2020-07-20 11:51:25,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:25,295 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-07-20 11:51:25,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 11:51:25,295 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-07-20 11:51:25,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 11:51:25,296 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:25,296 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 11:51:25,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:25,509 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:25,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:25,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1668757445, now seen corresponding path program 1 times [2020-07-20 11:51:25,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:25,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359887861] [2020-07-20 11:51:25,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 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 11:51:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:25,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 11:51:25,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:25,635 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:25,639 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:25,648 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 11:51:25,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:25,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359887861] [2020-07-20 11:51:25,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:25,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 11:51:25,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103447038] [2020-07-20 11:51:25,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 11:51:25,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:25,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 11:51:25,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:51:25,650 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 8 states. [2020-07-20 11:51:25,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:25,866 INFO L93 Difference]: Finished difference Result 141 states and 159 transitions. [2020-07-20 11:51:25,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 11:51:25,866 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-07-20 11:51:25,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:25,868 INFO L225 Difference]: With dead ends: 141 [2020-07-20 11:51:25,868 INFO L226 Difference]: Without dead ends: 139 [2020-07-20 11:51:25,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-20 11:51:25,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-07-20 11:51:25,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 116. [2020-07-20 11:51:25,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-07-20 11:51:25,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 133 transitions. [2020-07-20 11:51:25,875 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 133 transitions. Word has length 22 [2020-07-20 11:51:25,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:25,875 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 133 transitions. [2020-07-20 11:51:25,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 11:51:25,875 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 133 transitions. [2020-07-20 11:51:25,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 11:51:25,876 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:25,876 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 11:51:26,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:26,083 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:26,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:26,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1621042195, now seen corresponding path program 1 times [2020-07-20 11:51:26,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:26,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257007649] [2020-07-20 11:51:26,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 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 11:51:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:26,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 11:51:26,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:26,218 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:26,219 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:26,236 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 11:51:26,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:26,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257007649] [2020-07-20 11:51:26,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:26,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 11:51:26,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114835270] [2020-07-20 11:51:26,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 11:51:26,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:26,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 11:51:26,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:51:26,242 INFO L87 Difference]: Start difference. First operand 116 states and 133 transitions. Second operand 8 states. [2020-07-20 11:51:26,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:26,437 INFO L93 Difference]: Finished difference Result 120 states and 136 transitions. [2020-07-20 11:51:26,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 11:51:26,438 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-07-20 11:51:26,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:26,440 INFO L225 Difference]: With dead ends: 120 [2020-07-20 11:51:26,440 INFO L226 Difference]: Without dead ends: 116 [2020-07-20 11:51:26,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-07-20 11:51:26,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-07-20 11:51:26,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-07-20 11:51:26,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-07-20 11:51:26,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 132 transitions. [2020-07-20 11:51:26,447 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 132 transitions. Word has length 22 [2020-07-20 11:51:26,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:26,448 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 132 transitions. [2020-07-20 11:51:26,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 11:51:26,448 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 132 transitions. [2020-07-20 11:51:26,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 11:51:26,449 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:26,449 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 11:51:26,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:26,660 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:26,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:26,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1584270570, now seen corresponding path program 1 times [2020-07-20 11:51:26,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:26,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814603539] [2020-07-20 11:51:26,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 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 11:51:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:26,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 11:51:26,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:26,837 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:26,840 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:26,851 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 11:51:26,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:26,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814603539] [2020-07-20 11:51:26,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:26,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-20 11:51:26,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847477571] [2020-07-20 11:51:26,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 11:51:26,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:26,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 11:51:26,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-07-20 11:51:26,854 INFO L87 Difference]: Start difference. First operand 116 states and 132 transitions. Second operand 10 states. [2020-07-20 11:51:27,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:27,171 INFO L93 Difference]: Finished difference Result 169 states and 191 transitions. [2020-07-20 11:51:27,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 11:51:27,172 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-07-20 11:51:27,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:27,173 INFO L225 Difference]: With dead ends: 169 [2020-07-20 11:51:27,174 INFO L226 Difference]: Without dead ends: 167 [2020-07-20 11:51:27,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-07-20 11:51:27,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-07-20 11:51:27,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 120. [2020-07-20 11:51:27,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-20 11:51:27,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 138 transitions. [2020-07-20 11:51:27,181 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 138 transitions. Word has length 26 [2020-07-20 11:51:27,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:27,181 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 138 transitions. [2020-07-20 11:51:27,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 11:51:27,181 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 138 transitions. [2020-07-20 11:51:27,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 11:51:27,182 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:27,182 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 11:51:27,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:27,389 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:27,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:27,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1631985820, now seen corresponding path program 1 times [2020-07-20 11:51:27,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:27,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928211487] [2020-07-20 11:51:27,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 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 11:51:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:27,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 11:51:27,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:27,553 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:27,554 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:27,575 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 11:51:27,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:27,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928211487] [2020-07-20 11:51:27,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:27,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-20 11:51:27,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288201205] [2020-07-20 11:51:27,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 11:51:27,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:27,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 11:51:27,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-07-20 11:51:27,577 INFO L87 Difference]: Start difference. First operand 120 states and 138 transitions. Second operand 10 states. [2020-07-20 11:51:27,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:27,891 INFO L93 Difference]: Finished difference Result 133 states and 151 transitions. [2020-07-20 11:51:27,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 11:51:27,892 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-07-20 11:51:27,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:27,893 INFO L225 Difference]: With dead ends: 133 [2020-07-20 11:51:27,893 INFO L226 Difference]: Without dead ends: 129 [2020-07-20 11:51:27,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-07-20 11:51:27,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-07-20 11:51:27,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 121. [2020-07-20 11:51:27,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-07-20 11:51:27,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2020-07-20 11:51:27,900 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 26 [2020-07-20 11:51:27,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:27,900 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2020-07-20 11:51:27,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 11:51:27,901 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2020-07-20 11:51:27,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 11:51:27,901 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:27,901 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 11:51:28,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:28,116 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:28,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:28,117 INFO L82 PathProgramCache]: Analyzing trace with hash 612299922, now seen corresponding path program 1 times [2020-07-20 11:51:28,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:28,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034464452] [2020-07-20 11:51:28,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 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 11:51:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:28,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 11:51:28,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:28,294 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:28,295 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:28,314 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 11:51:28,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:28,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034464452] [2020-07-20 11:51:28,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:28,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-20 11:51:28,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185421538] [2020-07-20 11:51:28,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 11:51:28,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:28,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 11:51:28,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-07-20 11:51:28,320 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand 10 states. [2020-07-20 11:51:28,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:28,775 INFO L93 Difference]: Finished difference Result 164 states and 188 transitions. [2020-07-20 11:51:28,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 11:51:28,776 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-07-20 11:51:28,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:28,778 INFO L225 Difference]: With dead ends: 164 [2020-07-20 11:51:28,778 INFO L226 Difference]: Without dead ends: 162 [2020-07-20 11:51:28,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-07-20 11:51:28,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-07-20 11:51:28,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 127. [2020-07-20 11:51:28,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-07-20 11:51:28,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 145 transitions. [2020-07-20 11:51:28,784 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 145 transitions. Word has length 26 [2020-07-20 11:51:28,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:28,784 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 145 transitions. [2020-07-20 11:51:28,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 11:51:28,785 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 145 transitions. [2020-07-20 11:51:28,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 11:51:28,785 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:28,785 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 11:51:28,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:28,993 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:28,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:28,994 INFO L82 PathProgramCache]: Analyzing trace with hash 868501953, now seen corresponding path program 1 times [2020-07-20 11:51:28,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:28,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760584371] [2020-07-20 11:51:28,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 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 11:51:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:29,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 11:51:29,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:29,171 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:29,172 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:29,184 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 11:51:29,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:29,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760584371] [2020-07-20 11:51:29,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:29,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-20 11:51:29,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270740705] [2020-07-20 11:51:29,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 11:51:29,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:29,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 11:51:29,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-07-20 11:51:29,187 INFO L87 Difference]: Start difference. First operand 127 states and 145 transitions. Second operand 12 states. [2020-07-20 11:51:29,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:29,654 INFO L93 Difference]: Finished difference Result 197 states and 225 transitions. [2020-07-20 11:51:29,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-20 11:51:29,654 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-07-20 11:51:29,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:29,656 INFO L225 Difference]: With dead ends: 197 [2020-07-20 11:51:29,656 INFO L226 Difference]: Without dead ends: 195 [2020-07-20 11:51:29,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2020-07-20 11:51:29,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-07-20 11:51:29,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 136. [2020-07-20 11:51:29,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-07-20 11:51:29,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 157 transitions. [2020-07-20 11:51:29,663 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 157 transitions. Word has length 30 [2020-07-20 11:51:29,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:29,664 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 157 transitions. [2020-07-20 11:51:29,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 11:51:29,664 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 157 transitions. [2020-07-20 11:51:29,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 11:51:29,665 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:29,665 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 11:51:29,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:29,880 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:29,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:29,881 INFO L82 PathProgramCache]: Analyzing trace with hash -130753639, now seen corresponding path program 1 times [2020-07-20 11:51:29,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:29,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247609655] [2020-07-20 11:51:29,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 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 11:51:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:29,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 11:51:29,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:30,089 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:30,091 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:30,101 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 11:51:30,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:30,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247609655] [2020-07-20 11:51:30,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:30,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-20 11:51:30,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053445700] [2020-07-20 11:51:30,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 11:51:30,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:30,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 11:51:30,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-07-20 11:51:30,103 INFO L87 Difference]: Start difference. First operand 136 states and 157 transitions. Second operand 12 states. [2020-07-20 11:51:30,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:30,554 INFO L93 Difference]: Finished difference Result 185 states and 211 transitions. [2020-07-20 11:51:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-20 11:51:30,555 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-07-20 11:51:30,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:30,556 INFO L225 Difference]: With dead ends: 185 [2020-07-20 11:51:30,557 INFO L226 Difference]: Without dead ends: 183 [2020-07-20 11:51:30,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2020-07-20 11:51:30,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-07-20 11:51:30,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 138. [2020-07-20 11:51:30,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-07-20 11:51:30,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 159 transitions. [2020-07-20 11:51:30,565 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 159 transitions. Word has length 30 [2020-07-20 11:51:30,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:30,566 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 159 transitions. [2020-07-20 11:51:30,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 11:51:30,566 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 159 transitions. [2020-07-20 11:51:30,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 11:51:30,566 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:30,567 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 11:51:30,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:30,780 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:30,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:30,780 INFO L82 PathProgramCache]: Analyzing trace with hash -83038389, now seen corresponding path program 1 times [2020-07-20 11:51:30,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:30,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133320648] [2020-07-20 11:51:30,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 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 11:51:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:30,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 11:51:30,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:30,964 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:30,967 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:30,980 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 11:51:30,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:30,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133320648] [2020-07-20 11:51:30,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:30,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-20 11:51:30,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861177209] [2020-07-20 11:51:30,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 11:51:30,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:30,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 11:51:30,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-07-20 11:51:30,983 INFO L87 Difference]: Start difference. First operand 138 states and 159 transitions. Second operand 12 states. [2020-07-20 11:51:31,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:31,251 INFO L93 Difference]: Finished difference Result 142 states and 162 transitions. [2020-07-20 11:51:31,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 11:51:31,253 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-07-20 11:51:31,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:31,254 INFO L225 Difference]: With dead ends: 142 [2020-07-20 11:51:31,254 INFO L226 Difference]: Without dead ends: 138 [2020-07-20 11:51:31,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-07-20 11:51:31,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-07-20 11:51:31,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-07-20 11:51:31,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-07-20 11:51:31,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2020-07-20 11:51:31,260 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 30 [2020-07-20 11:51:31,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:31,261 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2020-07-20 11:51:31,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 11:51:31,261 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2020-07-20 11:51:31,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-20 11:51:31,261 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:31,262 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 11:51:31,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:31,470 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:31,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:31,471 INFO L82 PathProgramCache]: Analyzing trace with hash 705180744, now seen corresponding path program 1 times [2020-07-20 11:51:31,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:31,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648934419] [2020-07-20 11:51:31,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:51:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:31,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-20 11:51:31,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:31,704 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:31,705 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:31,728 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 11:51:31,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:31,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648934419] [2020-07-20 11:51:31,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:31,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-20 11:51:31,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917216821] [2020-07-20 11:51:31,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 11:51:31,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:31,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 11:51:31,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-07-20 11:51:31,730 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 14 states. [2020-07-20 11:51:32,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:32,270 INFO L93 Difference]: Finished difference Result 209 states and 239 transitions. [2020-07-20 11:51:32,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-20 11:51:32,273 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-07-20 11:51:32,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:32,274 INFO L225 Difference]: With dead ends: 209 [2020-07-20 11:51:32,274 INFO L226 Difference]: Without dead ends: 207 [2020-07-20 11:51:32,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2020-07-20 11:51:32,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-07-20 11:51:32,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 142. [2020-07-20 11:51:32,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-07-20 11:51:32,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 164 transitions. [2020-07-20 11:51:32,284 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 164 transitions. Word has length 34 [2020-07-20 11:51:32,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:32,284 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 164 transitions. [2020-07-20 11:51:32,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 11:51:32,285 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 164 transitions. [2020-07-20 11:51:32,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-20 11:51:32,285 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:32,285 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 11:51:32,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:32,501 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:32,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:32,501 INFO L82 PathProgramCache]: Analyzing trace with hash 752895994, now seen corresponding path program 1 times [2020-07-20 11:51:32,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:32,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679889823] [2020-07-20 11:51:32,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:32,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-20 11:51:32,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:32,725 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:32,727 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:32,739 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 11:51:32,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:32,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679889823] [2020-07-20 11:51:32,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:32,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-20 11:51:32,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458914421] [2020-07-20 11:51:32,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 11:51:32,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:32,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 11:51:32,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-07-20 11:51:32,740 INFO L87 Difference]: Start difference. First operand 142 states and 164 transitions. Second operand 14 states. [2020-07-20 11:51:33,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:33,103 INFO L93 Difference]: Finished difference Result 155 states and 177 transitions. [2020-07-20 11:51:33,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 11:51:33,103 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-07-20 11:51:33,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:33,105 INFO L225 Difference]: With dead ends: 155 [2020-07-20 11:51:33,105 INFO L226 Difference]: Without dead ends: 151 [2020-07-20 11:51:33,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-07-20 11:51:33,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-07-20 11:51:33,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 143. [2020-07-20 11:51:33,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-07-20 11:51:33,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 165 transitions. [2020-07-20 11:51:33,112 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 165 transitions. Word has length 34 [2020-07-20 11:51:33,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:33,112 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 165 transitions. [2020-07-20 11:51:33,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 11:51:33,112 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 165 transitions. [2020-07-20 11:51:33,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-20 11:51:33,113 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:33,113 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:33,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:33,319 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:33,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:33,320 INFO L82 PathProgramCache]: Analyzing trace with hash -619304720, now seen corresponding path program 1 times [2020-07-20 11:51:33,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:33,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081001313] [2020-07-20 11:51:33,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:33,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-20 11:51:33,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:33,564 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:33,565 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:33,577 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 11:51:33,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:33,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081001313] [2020-07-20 11:51:33,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:33,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-20 11:51:33,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901498475] [2020-07-20 11:51:33,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 11:51:33,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:33,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 11:51:33,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-07-20 11:51:33,579 INFO L87 Difference]: Start difference. First operand 143 states and 165 transitions. Second operand 14 states. [2020-07-20 11:51:34,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:34,073 INFO L93 Difference]: Finished difference Result 206 states and 238 transitions. [2020-07-20 11:51:34,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-20 11:51:34,074 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-07-20 11:51:34,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:34,078 INFO L225 Difference]: With dead ends: 206 [2020-07-20 11:51:34,078 INFO L226 Difference]: Without dead ends: 204 [2020-07-20 11:51:34,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2020-07-20 11:51:34,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-07-20 11:51:34,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 149. [2020-07-20 11:51:34,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-07-20 11:51:34,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 171 transitions. [2020-07-20 11:51:34,085 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 171 transitions. Word has length 34 [2020-07-20 11:51:34,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:34,085 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 171 transitions. [2020-07-20 11:51:34,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 11:51:34,086 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 171 transitions. [2020-07-20 11:51:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 11:51:34,086 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:34,086 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 11:51:34,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:34,299 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:34,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:34,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1500309769, now seen corresponding path program 1 times [2020-07-20 11:51:34,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:34,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587851459] [2020-07-20 11:51:34,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:34,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-20 11:51:34,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:34,564 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:34,565 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:34,577 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 11:51:34,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:34,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587851459] [2020-07-20 11:51:34,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:34,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-20 11:51:34,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277400950] [2020-07-20 11:51:34,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-20 11:51:34,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:34,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-20 11:51:34,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2020-07-20 11:51:34,580 INFO L87 Difference]: Start difference. First operand 149 states and 171 transitions. Second operand 16 states. [2020-07-20 11:51:35,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:35,161 INFO L93 Difference]: Finished difference Result 229 states and 263 transitions. [2020-07-20 11:51:35,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-20 11:51:35,162 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2020-07-20 11:51:35,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:35,164 INFO L225 Difference]: With dead ends: 229 [2020-07-20 11:51:35,164 INFO L226 Difference]: Without dead ends: 227 [2020-07-20 11:51:35,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=211, Invalid=439, Unknown=0, NotChecked=0, Total=650 [2020-07-20 11:51:35,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-07-20 11:51:35,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 153. [2020-07-20 11:51:35,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-07-20 11:51:35,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 177 transitions. [2020-07-20 11:51:35,178 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 177 transitions. Word has length 38 [2020-07-20 11:51:35,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:35,179 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 177 transitions. [2020-07-20 11:51:35,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-20 11:51:35,179 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 177 transitions. [2020-07-20 11:51:35,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 11:51:35,180 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:35,181 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 11:51:35,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:35,395 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:35,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:35,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1452594519, now seen corresponding path program 1 times [2020-07-20 11:51:35,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:35,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849070191] [2020-07-20 11:51:35,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:35,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-20 11:51:35,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:35,659 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:35,660 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:35,674 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 11:51:35,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:35,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849070191] [2020-07-20 11:51:35,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:35,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-20 11:51:35,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680610382] [2020-07-20 11:51:35,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-20 11:51:35,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:35,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-20 11:51:35,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2020-07-20 11:51:35,676 INFO L87 Difference]: Start difference. First operand 153 states and 177 transitions. Second operand 16 states. [2020-07-20 11:51:36,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:36,085 INFO L93 Difference]: Finished difference Result 166 states and 190 transitions. [2020-07-20 11:51:36,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 11:51:36,085 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2020-07-20 11:51:36,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:36,087 INFO L225 Difference]: With dead ends: 166 [2020-07-20 11:51:36,087 INFO L226 Difference]: Without dead ends: 162 [2020-07-20 11:51:36,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-07-20 11:51:36,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-07-20 11:51:36,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 154. [2020-07-20 11:51:36,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-07-20 11:51:36,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 178 transitions. [2020-07-20 11:51:36,093 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 178 transitions. Word has length 38 [2020-07-20 11:51:36,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:36,094 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 178 transitions. [2020-07-20 11:51:36,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-20 11:51:36,094 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 178 transitions. [2020-07-20 11:51:36,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 11:51:36,095 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:36,095 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 11:51:36,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:36,309 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:36,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:36,310 INFO L82 PathProgramCache]: Analyzing trace with hash -853568993, now seen corresponding path program 1 times [2020-07-20 11:51:36,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:36,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877716437] [2020-07-20 11:51:36,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:36,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-20 11:51:36,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:36,563 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:36,564 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:36,578 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 11:51:36,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:36,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877716437] [2020-07-20 11:51:36,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:36,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-20 11:51:36,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616369880] [2020-07-20 11:51:36,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-20 11:51:36,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:36,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-20 11:51:36,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2020-07-20 11:51:36,580 INFO L87 Difference]: Start difference. First operand 154 states and 178 transitions. Second operand 16 states. [2020-07-20 11:51:37,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:37,258 INFO L93 Difference]: Finished difference Result 227 states and 263 transitions. [2020-07-20 11:51:37,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-20 11:51:37,258 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2020-07-20 11:51:37,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:37,260 INFO L225 Difference]: With dead ends: 227 [2020-07-20 11:51:37,260 INFO L226 Difference]: Without dead ends: 225 [2020-07-20 11:51:37,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=211, Invalid=439, Unknown=0, NotChecked=0, Total=650 [2020-07-20 11:51:37,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-07-20 11:51:37,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 160. [2020-07-20 11:51:37,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-07-20 11:51:37,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 184 transitions. [2020-07-20 11:51:37,268 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 184 transitions. Word has length 38 [2020-07-20 11:51:37,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:37,269 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 184 transitions. [2020-07-20 11:51:37,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-20 11:51:37,269 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 184 transitions. [2020-07-20 11:51:37,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-20 11:51:37,270 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:37,270 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 11:51:37,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:37,484 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:37,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:37,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1863025998, now seen corresponding path program 1 times [2020-07-20 11:51:37,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:37,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772562941] [2020-07-20 11:51:37,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:37,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-20 11:51:37,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:37,793 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:37,794 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:37,807 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 11:51:37,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:37,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772562941] [2020-07-20 11:51:37,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:37,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-07-20 11:51:37,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844274529] [2020-07-20 11:51:37,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-20 11:51:37,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:37,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-20 11:51:37,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2020-07-20 11:51:37,809 INFO L87 Difference]: Start difference. First operand 160 states and 184 transitions. Second operand 18 states. [2020-07-20 11:51:38,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:38,528 INFO L93 Difference]: Finished difference Result 260 states and 300 transitions. [2020-07-20 11:51:38,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-20 11:51:38,528 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 42 [2020-07-20 11:51:38,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:38,530 INFO L225 Difference]: With dead ends: 260 [2020-07-20 11:51:38,530 INFO L226 Difference]: Without dead ends: 258 [2020-07-20 11:51:38,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=592, Unknown=0, NotChecked=0, Total=870 [2020-07-20 11:51:38,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-07-20 11:51:38,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 169. [2020-07-20 11:51:38,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-07-20 11:51:38,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 196 transitions. [2020-07-20 11:51:38,539 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 196 transitions. Word has length 42 [2020-07-20 11:51:38,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:38,540 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 196 transitions. [2020-07-20 11:51:38,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-20 11:51:38,540 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 196 transitions. [2020-07-20 11:51:38,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-20 11:51:38,541 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:38,541 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 11:51:38,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:38,755 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:38,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:38,755 INFO L82 PathProgramCache]: Analyzing trace with hash -754941018, now seen corresponding path program 1 times [2020-07-20 11:51:38,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:38,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631597694] [2020-07-20 11:51:38,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:38,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-20 11:51:38,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:39,069 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:39,070 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:39,095 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 11:51:39,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:39,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631597694] [2020-07-20 11:51:39,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:39,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-07-20 11:51:39,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990523935] [2020-07-20 11:51:39,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-20 11:51:39,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:39,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-20 11:51:39,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2020-07-20 11:51:39,097 INFO L87 Difference]: Start difference. First operand 169 states and 196 transitions. Second operand 18 states. [2020-07-20 11:51:39,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:39,818 INFO L93 Difference]: Finished difference Result 245 states and 283 transitions. [2020-07-20 11:51:39,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-20 11:51:39,818 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 42 [2020-07-20 11:51:39,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:39,820 INFO L225 Difference]: With dead ends: 245 [2020-07-20 11:51:39,820 INFO L226 Difference]: Without dead ends: 243 [2020-07-20 11:51:39,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=592, Unknown=0, NotChecked=0, Total=870 [2020-07-20 11:51:39,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-07-20 11:51:39,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 171. [2020-07-20 11:51:39,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-07-20 11:51:39,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 198 transitions. [2020-07-20 11:51:39,829 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 198 transitions. Word has length 42 [2020-07-20 11:51:39,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:39,830 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 198 transitions. [2020-07-20 11:51:39,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-20 11:51:39,830 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 198 transitions. [2020-07-20 11:51:39,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-20 11:51:39,831 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:39,831 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 11:51:40,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:40,036 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:40,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:40,036 INFO L82 PathProgramCache]: Analyzing trace with hash -707225768, now seen corresponding path program 1 times [2020-07-20 11:51:40,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:40,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806004085] [2020-07-20 11:51:40,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:40,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-20 11:51:40,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:40,345 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:40,346 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:40,361 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 11:51:40,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:40,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806004085] [2020-07-20 11:51:40,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:40,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-07-20 11:51:40,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095709227] [2020-07-20 11:51:40,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-20 11:51:40,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:40,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-20 11:51:40,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2020-07-20 11:51:40,362 INFO L87 Difference]: Start difference. First operand 171 states and 198 transitions. Second operand 18 states. [2020-07-20 11:51:40,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:40,804 INFO L93 Difference]: Finished difference Result 175 states and 201 transitions. [2020-07-20 11:51:40,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-20 11:51:40,805 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 42 [2020-07-20 11:51:40,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:40,806 INFO L225 Difference]: With dead ends: 175 [2020-07-20 11:51:40,806 INFO L226 Difference]: Without dead ends: 171 [2020-07-20 11:51:40,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2020-07-20 11:51:40,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-07-20 11:51:40,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-07-20 11:51:40,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-07-20 11:51:40,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 197 transitions. [2020-07-20 11:51:40,812 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 197 transitions. Word has length 42 [2020-07-20 11:51:40,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:40,812 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 197 transitions. [2020-07-20 11:51:40,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-20 11:51:40,812 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 197 transitions. [2020-07-20 11:51:40,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 11:51:40,813 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:40,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:41,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:41,014 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:41,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:41,015 INFO L82 PathProgramCache]: Analyzing trace with hash -2030339499, now seen corresponding path program 1 times [2020-07-20 11:51:41,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:41,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488758190] [2020-07-20 11:51:41,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:41,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-20 11:51:41,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:41,393 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:41,395 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:41,410 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 11:51:41,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:41,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488758190] [2020-07-20 11:51:41,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:41,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-07-20 11:51:41,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885310860] [2020-07-20 11:51:41,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-20 11:51:41,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:41,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-20 11:51:41,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2020-07-20 11:51:41,412 INFO L87 Difference]: Start difference. First operand 171 states and 197 transitions. Second operand 20 states. [2020-07-20 11:51:42,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:42,224 INFO L93 Difference]: Finished difference Result 269 states and 311 transitions. [2020-07-20 11:51:42,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-20 11:51:42,224 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 46 [2020-07-20 11:51:42,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:42,226 INFO L225 Difference]: With dead ends: 269 [2020-07-20 11:51:42,227 INFO L226 Difference]: Without dead ends: 267 [2020-07-20 11:51:42,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=354, Invalid=768, Unknown=0, NotChecked=0, Total=1122 [2020-07-20 11:51:42,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-07-20 11:51:42,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 175. [2020-07-20 11:51:42,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-07-20 11:51:42,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 203 transitions. [2020-07-20 11:51:42,235 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 203 transitions. Word has length 46 [2020-07-20 11:51:42,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:42,236 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 203 transitions. [2020-07-20 11:51:42,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-20 11:51:42,236 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 203 transitions. [2020-07-20 11:51:42,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 11:51:42,237 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:42,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:42,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:42,444 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:42,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:42,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1982624249, now seen corresponding path program 1 times [2020-07-20 11:51:42,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:42,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886019519] [2020-07-20 11:51:42,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:42,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-20 11:51:42,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:42,799 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:42,800 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:42,814 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 11:51:42,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:42,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886019519] [2020-07-20 11:51:42,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:42,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-07-20 11:51:42,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776603558] [2020-07-20 11:51:42,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-20 11:51:42,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:42,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-20 11:51:42,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2020-07-20 11:51:42,816 INFO L87 Difference]: Start difference. First operand 175 states and 203 transitions. Second operand 20 states. [2020-07-20 11:51:43,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:43,338 INFO L93 Difference]: Finished difference Result 188 states and 216 transitions. [2020-07-20 11:51:43,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-20 11:51:43,339 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 46 [2020-07-20 11:51:43,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:43,341 INFO L225 Difference]: With dead ends: 188 [2020-07-20 11:51:43,341 INFO L226 Difference]: Without dead ends: 184 [2020-07-20 11:51:43,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=271, Unknown=0, NotChecked=0, Total=420 [2020-07-20 11:51:43,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-07-20 11:51:43,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 176. [2020-07-20 11:51:43,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-07-20 11:51:43,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 204 transitions. [2020-07-20 11:51:43,350 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 204 transitions. Word has length 46 [2020-07-20 11:51:43,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:43,350 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 204 transitions. [2020-07-20 11:51:43,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-20 11:51:43,350 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 204 transitions. [2020-07-20 11:51:43,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 11:51:43,351 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:43,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:43,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:43,566 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:43,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:43,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1736113539, now seen corresponding path program 1 times [2020-07-20 11:51:43,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:43,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453302233] [2020-07-20 11:51:43,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:43,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-20 11:51:43,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:43,927 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:43,929 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:43,945 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 11:51:43,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:43,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453302233] [2020-07-20 11:51:43,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:43,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-07-20 11:51:43,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548103848] [2020-07-20 11:51:43,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-20 11:51:43,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:43,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-20 11:51:43,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2020-07-20 11:51:43,948 INFO L87 Difference]: Start difference. First operand 176 states and 204 transitions. Second operand 20 states. [2020-07-20 11:51:44,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:44,765 INFO L93 Difference]: Finished difference Result 269 states and 313 transitions. [2020-07-20 11:51:44,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-20 11:51:44,766 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 46 [2020-07-20 11:51:44,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:44,768 INFO L225 Difference]: With dead ends: 269 [2020-07-20 11:51:44,768 INFO L226 Difference]: Without dead ends: 267 [2020-07-20 11:51:44,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=354, Invalid=768, Unknown=0, NotChecked=0, Total=1122 [2020-07-20 11:51:44,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-07-20 11:51:44,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 182. [2020-07-20 11:51:44,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-07-20 11:51:44,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 210 transitions. [2020-07-20 11:51:44,776 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 210 transitions. Word has length 46 [2020-07-20 11:51:44,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:44,776 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 210 transitions. [2020-07-20 11:51:44,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-20 11:51:44,776 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 210 transitions. [2020-07-20 11:51:44,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-20 11:51:44,777 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:44,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:44,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:44,978 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:44,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:44,979 INFO L82 PathProgramCache]: Analyzing trace with hash 2058833109, now seen corresponding path program 1 times [2020-07-20 11:51:44,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:44,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842916707] [2020-07-20 11:51:44,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:45,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 11:51:45,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:45,126 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:45,127 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:45,137 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 11:51:45,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:45,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842916707] [2020-07-20 11:51:45,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:45,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-20 11:51:45,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442658816] [2020-07-20 11:51:45,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 11:51:45,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:45,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 11:51:45,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-07-20 11:51:45,139 INFO L87 Difference]: Start difference. First operand 182 states and 210 transitions. Second operand 13 states. [2020-07-20 11:51:45,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:45,648 INFO L93 Difference]: Finished difference Result 210 states and 241 transitions. [2020-07-20 11:51:45,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 11:51:45,649 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-07-20 11:51:45,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:45,651 INFO L225 Difference]: With dead ends: 210 [2020-07-20 11:51:45,651 INFO L226 Difference]: Without dead ends: 208 [2020-07-20 11:51:45,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-07-20 11:51:45,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-07-20 11:51:45,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 180. [2020-07-20 11:51:45,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-07-20 11:51:45,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 208 transitions. [2020-07-20 11:51:45,659 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 208 transitions. Word has length 48 [2020-07-20 11:51:45,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:45,659 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 208 transitions. [2020-07-20 11:51:45,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 11:51:45,659 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 208 transitions. [2020-07-20 11:51:45,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-20 11:51:45,660 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:45,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:45,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:45,866 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:45,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:45,866 INFO L82 PathProgramCache]: Analyzing trace with hash 2058819207, now seen corresponding path program 1 times [2020-07-20 11:51:45,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:45,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549243051] [2020-07-20 11:51:45,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:45,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 11:51:45,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:46,005 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:46,017 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 11:51:46,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:46,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549243051] [2020-07-20 11:51:46,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:46,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-20 11:51:46,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356069242] [2020-07-20 11:51:46,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 11:51:46,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:46,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 11:51:46,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-07-20 11:51:46,019 INFO L87 Difference]: Start difference. First operand 180 states and 208 transitions. Second operand 13 states. [2020-07-20 11:51:46,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:46,517 INFO L93 Difference]: Finished difference Result 199 states and 229 transitions. [2020-07-20 11:51:46,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 11:51:46,517 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-07-20 11:51:46,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:46,519 INFO L225 Difference]: With dead ends: 199 [2020-07-20 11:51:46,519 INFO L226 Difference]: Without dead ends: 197 [2020-07-20 11:51:46,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-07-20 11:51:46,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-07-20 11:51:46,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 178. [2020-07-20 11:51:46,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-07-20 11:51:46,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 206 transitions. [2020-07-20 11:51:46,529 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 206 transitions. Word has length 48 [2020-07-20 11:51:46,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:46,529 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 206 transitions. [2020-07-20 11:51:46,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 11:51:46,529 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 206 transitions. [2020-07-20 11:51:46,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-07-20 11:51:46,530 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:46,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:46,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:46,744 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:46,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:46,744 INFO L82 PathProgramCache]: Analyzing trace with hash -600679635, now seen corresponding path program 1 times [2020-07-20 11:51:46,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:46,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492713753] [2020-07-20 11:51:46,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:46,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-20 11:51:46,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:47,162 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:47,163 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:47,181 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 11:51:47,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:47,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492713753] [2020-07-20 11:51:47,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:47,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-07-20 11:51:47,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063093602] [2020-07-20 11:51:47,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-20 11:51:47,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:47,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-20 11:51:47,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2020-07-20 11:51:47,183 INFO L87 Difference]: Start difference. First operand 178 states and 206 transitions. Second operand 22 states. [2020-07-20 11:51:47,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:47,749 INFO L93 Difference]: Finished difference Result 235 states and 269 transitions. [2020-07-20 11:51:47,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-20 11:51:47,750 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 49 [2020-07-20 11:51:47,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:47,751 INFO L225 Difference]: With dead ends: 235 [2020-07-20 11:51:47,752 INFO L226 Difference]: Without dead ends: 233 [2020-07-20 11:51:47,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=180, Invalid=326, Unknown=0, NotChecked=0, Total=506 [2020-07-20 11:51:47,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-07-20 11:51:47,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 183. [2020-07-20 11:51:47,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-07-20 11:51:47,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 212 transitions. [2020-07-20 11:51:47,760 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 212 transitions. Word has length 49 [2020-07-20 11:51:47,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:47,760 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 212 transitions. [2020-07-20 11:51:47,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-20 11:51:47,760 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 212 transitions. [2020-07-20 11:51:47,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-07-20 11:51:47,761 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:47,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:47,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:47,975 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:47,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:47,976 INFO L82 PathProgramCache]: Analyzing trace with hash -601110611, now seen corresponding path program 1 times [2020-07-20 11:51:47,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:47,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195706776] [2020-07-20 11:51:47,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:48,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-20 11:51:48,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:48,386 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:48,387 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:48,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:51:48,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:48,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195706776] [2020-07-20 11:51:48,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:48,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-07-20 11:51:48,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958713644] [2020-07-20 11:51:48,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-20 11:51:48,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:48,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-20 11:51:48,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2020-07-20 11:51:48,405 INFO L87 Difference]: Start difference. First operand 183 states and 212 transitions. Second operand 22 states. [2020-07-20 11:51:48,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:48,961 INFO L93 Difference]: Finished difference Result 225 states and 258 transitions. [2020-07-20 11:51:48,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-20 11:51:48,962 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 49 [2020-07-20 11:51:48,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:48,963 INFO L225 Difference]: With dead ends: 225 [2020-07-20 11:51:48,964 INFO L226 Difference]: Without dead ends: 223 [2020-07-20 11:51:48,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=180, Invalid=326, Unknown=0, NotChecked=0, Total=506 [2020-07-20 11:51:48,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-07-20 11:51:48,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 185. [2020-07-20 11:51:48,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-07-20 11:51:48,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 214 transitions. [2020-07-20 11:51:48,973 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 214 transitions. Word has length 49 [2020-07-20 11:51:48,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:48,973 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 214 transitions. [2020-07-20 11:51:48,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-20 11:51:48,973 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 214 transitions. [2020-07-20 11:51:48,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-20 11:51:48,974 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:48,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:49,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:49,175 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:49,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:49,176 INFO L82 PathProgramCache]: Analyzing trace with hash -860947708, now seen corresponding path program 1 times [2020-07-20 11:51:49,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:49,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824234294] [2020-07-20 11:51:49,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:49,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-20 11:51:49,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:49,600 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:49,601 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:49,618 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 11:51:49,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:49,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824234294] [2020-07-20 11:51:49,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:49,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-07-20 11:51:49,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422200716] [2020-07-20 11:51:49,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-20 11:51:49,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:49,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-20 11:51:49,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2020-07-20 11:51:49,620 INFO L87 Difference]: Start difference. First operand 185 states and 214 transitions. Second operand 22 states. [2020-07-20 11:51:50,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:50,505 INFO L93 Difference]: Finished difference Result 292 states and 339 transitions. [2020-07-20 11:51:50,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-20 11:51:50,506 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 50 [2020-07-20 11:51:50,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:50,508 INFO L225 Difference]: With dead ends: 292 [2020-07-20 11:51:50,508 INFO L226 Difference]: Without dead ends: 290 [2020-07-20 11:51:50,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=439, Invalid=967, Unknown=0, NotChecked=0, Total=1406 [2020-07-20 11:51:50,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-07-20 11:51:50,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 189. [2020-07-20 11:51:50,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-07-20 11:51:50,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 220 transitions. [2020-07-20 11:51:50,516 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 220 transitions. Word has length 50 [2020-07-20 11:51:50,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:50,516 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 220 transitions. [2020-07-20 11:51:50,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-20 11:51:50,517 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 220 transitions. [2020-07-20 11:51:50,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-20 11:51:50,517 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:50,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:50,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:50,726 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:50,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:50,727 INFO L82 PathProgramCache]: Analyzing trace with hash -813232458, now seen corresponding path program 1 times [2020-07-20 11:51:50,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:50,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852083963] [2020-07-20 11:51:50,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:50,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-20 11:51:50,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:51,151 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:51,152 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:51,168 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 11:51:51,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:51,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852083963] [2020-07-20 11:51:51,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:51,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-07-20 11:51:51,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663185062] [2020-07-20 11:51:51,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-20 11:51:51,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:51,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-20 11:51:51,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2020-07-20 11:51:51,170 INFO L87 Difference]: Start difference. First operand 189 states and 220 transitions. Second operand 22 states. [2020-07-20 11:51:51,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:51,698 INFO L93 Difference]: Finished difference Result 202 states and 233 transitions. [2020-07-20 11:51:51,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-20 11:51:51,698 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 50 [2020-07-20 11:51:51,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:51,700 INFO L225 Difference]: With dead ends: 202 [2020-07-20 11:51:51,700 INFO L226 Difference]: Without dead ends: 198 [2020-07-20 11:51:51,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=180, Invalid=326, Unknown=0, NotChecked=0, Total=506 [2020-07-20 11:51:51,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-07-20 11:51:51,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 190. [2020-07-20 11:51:51,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-07-20 11:51:51,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 221 transitions. [2020-07-20 11:51:51,709 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 221 transitions. Word has length 50 [2020-07-20 11:51:51,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:51,710 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 221 transitions. [2020-07-20 11:51:51,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-20 11:51:51,710 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 221 transitions. [2020-07-20 11:51:51,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-20 11:51:51,710 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:51,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:51,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:51,924 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:51,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:51,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1404504492, now seen corresponding path program 1 times [2020-07-20 11:51:51,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:51,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493581983] [2020-07-20 11:51:51,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:51,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-20 11:51:51,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:52,317 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:52,318 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:52,344 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 11:51:52,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:52,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493581983] [2020-07-20 11:51:52,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:52,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-07-20 11:51:52,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356674396] [2020-07-20 11:51:52,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-20 11:51:52,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:52,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-20 11:51:52,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2020-07-20 11:51:52,347 INFO L87 Difference]: Start difference. First operand 190 states and 221 transitions. Second operand 22 states. [2020-07-20 11:51:53,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:53,294 INFO L93 Difference]: Finished difference Result 293 states and 342 transitions. [2020-07-20 11:51:53,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-20 11:51:53,295 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 50 [2020-07-20 11:51:53,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:53,298 INFO L225 Difference]: With dead ends: 293 [2020-07-20 11:51:53,298 INFO L226 Difference]: Without dead ends: 291 [2020-07-20 11:51:53,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=439, Invalid=967, Unknown=0, NotChecked=0, Total=1406 [2020-07-20 11:51:53,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-07-20 11:51:53,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 196. [2020-07-20 11:51:53,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-07-20 11:51:53,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 227 transitions. [2020-07-20 11:51:53,311 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 227 transitions. Word has length 50 [2020-07-20 11:51:53,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:53,312 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 227 transitions. [2020-07-20 11:51:53,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-20 11:51:53,312 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 227 transitions. [2020-07-20 11:51:53,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-20 11:51:53,313 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:53,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:53,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:53,527 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:53,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:53,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1655924005, now seen corresponding path program 1 times [2020-07-20 11:51:53,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:53,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203949414] [2020-07-20 11:51:53,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:53,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-20 11:51:53,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:54,042 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:54,044 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:54,064 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 11:51:54,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:54,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203949414] [2020-07-20 11:51:54,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:54,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-07-20 11:51:54,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314325997] [2020-07-20 11:51:54,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-20 11:51:54,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:54,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-20 11:51:54,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=342, Unknown=0, NotChecked=0, Total=552 [2020-07-20 11:51:54,066 INFO L87 Difference]: Start difference. First operand 196 states and 227 transitions. Second operand 24 states. [2020-07-20 11:51:55,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:55,144 INFO L93 Difference]: Finished difference Result 337 states and 391 transitions. [2020-07-20 11:51:55,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-07-20 11:51:55,144 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 54 [2020-07-20 11:51:55,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:55,146 INFO L225 Difference]: With dead ends: 337 [2020-07-20 11:51:55,146 INFO L226 Difference]: Without dead ends: 335 [2020-07-20 11:51:55,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=533, Invalid=1189, Unknown=0, NotChecked=0, Total=1722 [2020-07-20 11:51:55,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-07-20 11:51:55,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 205. [2020-07-20 11:51:55,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-07-20 11:51:55,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 239 transitions. [2020-07-20 11:51:55,158 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 239 transitions. Word has length 54 [2020-07-20 11:51:55,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:55,158 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 239 transitions. [2020-07-20 11:51:55,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-20 11:51:55,158 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 239 transitions. [2020-07-20 11:51:55,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-20 11:51:55,159 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:55,159 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:55,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:55,360 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:55,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:55,360 INFO L82 PathProgramCache]: Analyzing trace with hash 92340710, now seen corresponding path program 1 times [2020-07-20 11:51:55,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:55,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266564064] [2020-07-20 11:51:55,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:55,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-20 11:51:55,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:55,837 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:55,838 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:55,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:51:55,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:51:55,879 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:51:56,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 11:51:56,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266564064] [2020-07-20 11:51:56,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:51:56,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 5] total 26 [2020-07-20 11:51:56,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164130410] [2020-07-20 11:51:56,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-20 11:51:56,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:56,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-20 11:51:56,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=404, Unknown=0, NotChecked=0, Total=650 [2020-07-20 11:51:56,126 INFO L87 Difference]: Start difference. First operand 205 states and 239 transitions. Second operand 26 states. [2020-07-20 11:51:56,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:56,903 INFO L93 Difference]: Finished difference Result 241 states and 278 transitions. [2020-07-20 11:51:56,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-20 11:51:56,904 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 54 [2020-07-20 11:51:56,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:56,906 INFO L225 Difference]: With dead ends: 241 [2020-07-20 11:51:56,906 INFO L226 Difference]: Without dead ends: 239 [2020-07-20 11:51:56,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 72 SyntacticMatches, 11 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=300, Invalid=692, Unknown=0, NotChecked=0, Total=992 [2020-07-20 11:51:56,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-07-20 11:51:56,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 201. [2020-07-20 11:51:56,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-07-20 11:51:56,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 235 transitions. [2020-07-20 11:51:56,916 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 235 transitions. Word has length 54 [2020-07-20 11:51:56,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:56,916 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 235 transitions. [2020-07-20 11:51:56,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-20 11:51:56,916 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 235 transitions. [2020-07-20 11:51:56,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-20 11:51:56,917 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:56,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:57,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:57,118 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:57,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:57,118 INFO L82 PathProgramCache]: Analyzing trace with hash 91909734, now seen corresponding path program 1 times [2020-07-20 11:51:57,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:57,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065119384] [2020-07-20 11:51:57,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:57,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-20 11:51:57,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:57,604 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:57,606 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:57,622 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 11:51:57,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:51:57,632 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:51:57,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 11:51:57,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065119384] [2020-07-20 11:51:57,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:51:57,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 5] total 26 [2020-07-20 11:51:57,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595059835] [2020-07-20 11:51:57,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-20 11:51:57,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:57,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-20 11:51:57,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=404, Unknown=0, NotChecked=0, Total=650 [2020-07-20 11:51:57,870 INFO L87 Difference]: Start difference. First operand 201 states and 235 transitions. Second operand 26 states. [2020-07-20 11:51:58,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:51:58,636 INFO L93 Difference]: Finished difference Result 253 states and 292 transitions. [2020-07-20 11:51:58,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-20 11:51:58,636 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 54 [2020-07-20 11:51:58,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:51:58,638 INFO L225 Difference]: With dead ends: 253 [2020-07-20 11:51:58,638 INFO L226 Difference]: Without dead ends: 251 [2020-07-20 11:51:58,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 72 SyntacticMatches, 11 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=300, Invalid=692, Unknown=0, NotChecked=0, Total=992 [2020-07-20 11:51:58,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-07-20 11:51:58,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 199. [2020-07-20 11:51:58,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-07-20 11:51:58,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 233 transitions. [2020-07-20 11:51:58,651 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 233 transitions. Word has length 54 [2020-07-20 11:51:58,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:51:58,651 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 233 transitions. [2020-07-20 11:51:58,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-20 11:51:58,651 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 233 transitions. [2020-07-20 11:51:58,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-20 11:51:58,652 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:51:58,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:51:58,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:58,866 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:51:58,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:51:58,866 INFO L82 PathProgramCache]: Analyzing trace with hash 192477039, now seen corresponding path program 1 times [2020-07-20 11:51:58,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:51:58,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888961385] [2020-07-20 11:51:58,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:51:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:51:58,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-20 11:51:58,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:51:59,348 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:51:59,349 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:51:59,367 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 11:51:59,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:51:59,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888961385] [2020-07-20 11:51:59,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:51:59,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-07-20 11:51:59,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544390474] [2020-07-20 11:51:59,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-20 11:51:59,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:51:59,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-20 11:51:59,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=342, Unknown=0, NotChecked=0, Total=552 [2020-07-20 11:51:59,369 INFO L87 Difference]: Start difference. First operand 199 states and 233 transitions. Second operand 24 states. [2020-07-20 11:52:00,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:00,454 INFO L93 Difference]: Finished difference Result 311 states and 363 transitions. [2020-07-20 11:52:00,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-07-20 11:52:00,454 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 55 [2020-07-20 11:52:00,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:00,456 INFO L225 Difference]: With dead ends: 311 [2020-07-20 11:52:00,456 INFO L226 Difference]: Without dead ends: 309 [2020-07-20 11:52:00,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=533, Invalid=1189, Unknown=0, NotChecked=0, Total=1722 [2020-07-20 11:52:00,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-07-20 11:52:00,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 201. [2020-07-20 11:52:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-07-20 11:52:00,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 235 transitions. [2020-07-20 11:52:00,469 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 235 transitions. Word has length 55 [2020-07-20 11:52:00,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:00,469 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 235 transitions. [2020-07-20 11:52:00,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-20 11:52:00,469 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 235 transitions. [2020-07-20 11:52:00,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-20 11:52:00,470 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:00,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:52:00,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:00,686 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:00,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:00,686 INFO L82 PathProgramCache]: Analyzing trace with hash 240192289, now seen corresponding path program 1 times [2020-07-20 11:52:00,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:00,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988711285] [2020-07-20 11:52:00,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:00,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-20 11:52:00,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:01,153 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:01,155 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:52:01,178 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 11:52:01,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:01,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988711285] [2020-07-20 11:52:01,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:01,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-07-20 11:52:01,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252016147] [2020-07-20 11:52:01,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-20 11:52:01,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:01,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-20 11:52:01,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=342, Unknown=0, NotChecked=0, Total=552 [2020-07-20 11:52:01,182 INFO L87 Difference]: Start difference. First operand 201 states and 235 transitions. Second operand 24 states. [2020-07-20 11:52:01,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:01,757 INFO L93 Difference]: Finished difference Result 214 states and 248 transitions. [2020-07-20 11:52:01,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-20 11:52:01,758 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 55 [2020-07-20 11:52:01,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:01,759 INFO L225 Difference]: With dead ends: 214 [2020-07-20 11:52:01,759 INFO L226 Difference]: Without dead ends: 210 [2020-07-20 11:52:01,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=214, Invalid=386, Unknown=0, NotChecked=0, Total=600 [2020-07-20 11:52:01,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-07-20 11:52:01,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 201. [2020-07-20 11:52:01,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-07-20 11:52:01,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 234 transitions. [2020-07-20 11:52:01,771 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 234 transitions. Word has length 55 [2020-07-20 11:52:01,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:01,771 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 234 transitions. [2020-07-20 11:52:01,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-20 11:52:01,771 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 234 transitions. [2020-07-20 11:52:01,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-07-20 11:52:01,772 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:01,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:52:01,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:01,985 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:01,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:01,986 INFO L82 PathProgramCache]: Analyzing trace with hash 882665926, now seen corresponding path program 1 times [2020-07-20 11:52:01,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:01,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062830316] [2020-07-20 11:52:01,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:02,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 28 conjunts are in the unsatisfiable core [2020-07-20 11:52:02,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:02,514 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:02,515 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:52:02,543 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 11:52:02,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:02,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062830316] [2020-07-20 11:52:02,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:02,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-07-20 11:52:02,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725436363] [2020-07-20 11:52:02,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-20 11:52:02,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:02,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-20 11:52:02,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=403, Unknown=0, NotChecked=0, Total=650 [2020-07-20 11:52:02,544 INFO L87 Difference]: Start difference. First operand 201 states and 234 transitions. Second operand 26 states. [2020-07-20 11:52:03,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:03,810 INFO L93 Difference]: Finished difference Result 357 states and 416 transitions. [2020-07-20 11:52:03,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-07-20 11:52:03,811 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 59 [2020-07-20 11:52:03,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:03,814 INFO L225 Difference]: With dead ends: 357 [2020-07-20 11:52:03,814 INFO L226 Difference]: Without dead ends: 355 [2020-07-20 11:52:03,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=636, Invalid=1434, Unknown=0, NotChecked=0, Total=2070 [2020-07-20 11:52:03,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-07-20 11:52:03,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 217. [2020-07-20 11:52:03,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-07-20 11:52:03,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 254 transitions. [2020-07-20 11:52:03,824 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 254 transitions. Word has length 59 [2020-07-20 11:52:03,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:03,824 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 254 transitions. [2020-07-20 11:52:03,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-20 11:52:03,824 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 254 transitions. [2020-07-20 11:52:03,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-20 11:52:03,825 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:03,826 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:52:04,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:04,034 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:04,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:04,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1484220062, now seen corresponding path program 1 times [2020-07-20 11:52:04,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:04,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632957009] [2020-07-20 11:52:04,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:04,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 28 conjunts are in the unsatisfiable core [2020-07-20 11:52:04,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:04,572 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:04,574 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:52:04,595 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:52:04,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:52:04,607 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:52:04,891 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 11:52:04,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632957009] [2020-07-20 11:52:04,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:52:04,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 5] total 28 [2020-07-20 11:52:04,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507483104] [2020-07-20 11:52:04,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-20 11:52:04,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:04,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-20 11:52:04,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=470, Unknown=0, NotChecked=0, Total=756 [2020-07-20 11:52:04,893 INFO L87 Difference]: Start difference. First operand 217 states and 254 transitions. Second operand 28 states. [2020-07-20 11:52:06,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:06,191 INFO L93 Difference]: Finished difference Result 335 states and 393 transitions. [2020-07-20 11:52:06,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-07-20 11:52:06,192 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 60 [2020-07-20 11:52:06,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:06,193 INFO L225 Difference]: With dead ends: 335 [2020-07-20 11:52:06,193 INFO L226 Difference]: Without dead ends: 333 [2020-07-20 11:52:06,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 81 SyntacticMatches, 12 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1098 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=791, Invalid=1861, Unknown=0, NotChecked=0, Total=2652 [2020-07-20 11:52:06,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-07-20 11:52:06,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 215. [2020-07-20 11:52:06,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-07-20 11:52:06,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 252 transitions. [2020-07-20 11:52:06,205 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 252 transitions. Word has length 60 [2020-07-20 11:52:06,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:06,205 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 252 transitions. [2020-07-20 11:52:06,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-20 11:52:06,206 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 252 transitions. [2020-07-20 11:52:06,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-20 11:52:06,206 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:06,207 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:52:06,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:06,412 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:06,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:06,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1436504812, now seen corresponding path program 1 times [2020-07-20 11:52:06,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:06,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522837232] [2020-07-20 11:52:06,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:06,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 28 conjunts are in the unsatisfiable core [2020-07-20 11:52:06,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:06,949 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:06,950 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:52:06,969 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 11:52:06,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:52:06,981 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:52:07,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 11:52:07,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522837232] [2020-07-20 11:52:07,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:52:07,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 5] total 28 [2020-07-20 11:52:07,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415622280] [2020-07-20 11:52:07,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-20 11:52:07,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:07,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-20 11:52:07,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=470, Unknown=0, NotChecked=0, Total=756 [2020-07-20 11:52:07,254 INFO L87 Difference]: Start difference. First operand 215 states and 252 transitions. Second operand 28 states. [2020-07-20 11:52:07,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:07,984 INFO L93 Difference]: Finished difference Result 228 states and 266 transitions. [2020-07-20 11:52:07,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-20 11:52:07,984 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 60 [2020-07-20 11:52:07,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:07,986 INFO L225 Difference]: With dead ends: 228 [2020-07-20 11:52:07,986 INFO L226 Difference]: Without dead ends: 222 [2020-07-20 11:52:07,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 81 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=315, Invalid=615, Unknown=0, NotChecked=0, Total=930 [2020-07-20 11:52:07,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-07-20 11:52:07,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 211. [2020-07-20 11:52:07,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-07-20 11:52:07,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 247 transitions. [2020-07-20 11:52:07,996 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 247 transitions. Word has length 60 [2020-07-20 11:52:07,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:07,997 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 247 transitions. [2020-07-20 11:52:07,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-20 11:52:07,997 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 247 transitions. [2020-07-20 11:52:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-20 11:52:07,997 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:07,998 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:52:08,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:08,211 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_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, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:08,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:08,212 INFO L82 PathProgramCache]: Analyzing trace with hash 458480185, now seen corresponding path program 1 times [2020-07-20 11:52:08,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:08,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437070678] [2020-07-20 11:52:08,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:08,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 30 conjunts are in the unsatisfiable core [2020-07-20 11:52:08,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:08,802 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:08,803 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:52:08,833 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:52:08,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:52:08,851 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:52:09,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 11:52:09,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437070678] [2020-07-20 11:52:09,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:52:09,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 5] total 30 [2020-07-20 11:52:09,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269514501] [2020-07-20 11:52:09,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-20 11:52:09,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:09,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-20 11:52:09,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=541, Unknown=0, NotChecked=0, Total=870 [2020-07-20 11:52:09,170 INFO L87 Difference]: Start difference. First operand 211 states and 247 transitions. Second operand 30 states. [2020-07-20 11:52:10,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:10,647 INFO L93 Difference]: Finished difference Result 359 states and 424 transitions. [2020-07-20 11:52:10,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-07-20 11:52:10,647 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 64 [2020-07-20 11:52:10,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:10,648 INFO L225 Difference]: With dead ends: 359 [2020-07-20 11:52:10,648 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:52:10,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 86 SyntacticMatches, 13 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=915, Invalid=2165, Unknown=0, NotChecked=0, Total=3080 [2020-07-20 11:52:10,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:52:10,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:52:10,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:52:10,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:52:10,652 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2020-07-20 11:52:10,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:10,653 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:52:10,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-20 11:52:10,653 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:52:10,653 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:52:10,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:10,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:52:11,115 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-07-20 11:52:13,705 WARN L193 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 495 DAG size of output: 297 [2020-07-20 11:52:14,553 WARN L193 SmtUtils]: Spent 841.00 ms on a formula simplification. DAG size of input: 454 DAG size of output: 292 [2020-07-20 11:52:14,762 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 12 [2020-07-20 11:52:18,349 WARN L193 SmtUtils]: Spent 3.58 s on a formula simplification. DAG size of input: 273 DAG size of output: 8 [2020-07-20 11:52:20,579 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 229 DAG size of output: 6 [2020-07-20 11:52:20,584 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:52:20,585 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:52:20,585 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:52:20,585 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:52:20,585 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 11:52:20,585 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:52:20,585 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:52:20,585 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-20 11:52:20,585 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-20 11:52:20,585 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-07-20 11:52:20,585 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-20 11:52:20,585 INFO L268 CegarLoopResult]: For program point L927(lines 927 939) no Hoare annotation was computed. [2020-07-20 11:52:20,586 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 115) no Hoare annotation was computed. [2020-07-20 11:52:20,586 INFO L268 CegarLoopResult]: For program point L217(line 217) no Hoare annotation was computed. [2020-07-20 11:52:20,586 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 15 1004) no Hoare annotation was computed. [2020-07-20 11:52:20,586 INFO L268 CegarLoopResult]: For program point L663(lines 663 961) no Hoare annotation was computed. [2020-07-20 11:52:20,586 INFO L268 CegarLoopResult]: For program point L432(lines 432 983) no Hoare annotation was computed. [2020-07-20 11:52:20,586 INFO L268 CegarLoopResult]: For program point L267(line 267) no Hoare annotation was computed. [2020-07-20 11:52:20,586 INFO L268 CegarLoopResult]: For program point L647(lines 647 963) no Hoare annotation was computed. [2020-07-20 11:52:20,586 INFO L268 CegarLoopResult]: For program point L383(lines 383 986) no Hoare annotation was computed. [2020-07-20 11:52:20,586 INFO L268 CegarLoopResult]: For program point L20(lines 20 1003) no Hoare annotation was computed. [2020-07-20 11:52:20,586 INFO L268 CegarLoopResult]: For program point L466(lines 466 490) no Hoare annotation was computed. [2020-07-20 11:52:20,586 INFO L268 CegarLoopResult]: For program point L879(lines 879 905) no Hoare annotation was computed. [2020-07-20 11:52:20,586 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 917) no Hoare annotation was computed. [2020-07-20 11:52:20,587 INFO L268 CegarLoopResult]: For program point L169(lines 169 191) no Hoare annotation was computed. [2020-07-20 11:52:20,587 INFO L268 CegarLoopResult]: For program point L681(lines 681 692) no Hoare annotation was computed. [2020-07-20 11:52:20,587 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-20 11:52:20,587 INFO L268 CegarLoopResult]: For program point L70(lines 70 286) no Hoare annotation was computed. [2020-07-20 11:52:20,587 INFO L268 CegarLoopResult]: For program point L929(line 929) no Hoare annotation was computed. [2020-07-20 11:52:20,587 INFO L268 CegarLoopResult]: For program point L731(lines 731 955) no Hoare annotation was computed. [2020-07-20 11:52:20,587 INFO L268 CegarLoopResult]: For program point L153(lines 153 232) no Hoare annotation was computed. [2020-07-20 11:52:20,587 INFO L268 CegarLoopResult]: For program point L500(lines 500 977) no Hoare annotation was computed. [2020-07-20 11:52:20,587 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 15 1004) no Hoare annotation was computed. [2020-07-20 11:52:20,587 INFO L268 CegarLoopResult]: For program point L203(lines 203 229) no Hoare annotation was computed. [2020-07-20 11:52:20,587 INFO L268 CegarLoopResult]: For program point L715(lines 715 957) no Hoare annotation was computed. [2020-07-20 11:52:20,587 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 893) no Hoare annotation was computed. [2020-07-20 11:52:20,587 INFO L268 CegarLoopResult]: For program point L451(lines 451 980) no Hoare annotation was computed. [2020-07-20 11:52:20,588 INFO L268 CegarLoopResult]: For program point L864(lines 864 944) no Hoare annotation was computed. [2020-07-20 11:52:20,588 INFO L268 CegarLoopResult]: For program point L253(lines 253 275) no Hoare annotation was computed. [2020-07-20 11:52:20,588 INFO L268 CegarLoopResult]: For program point L534(lines 534 558) no Hoare annotation was computed. [2020-07-20 11:52:20,588 INFO L268 CegarLoopResult]: For program point L881(line 881) no Hoare annotation was computed. [2020-07-20 11:52:20,588 INFO L268 CegarLoopResult]: For program point L749(lines 749 760) no Hoare annotation was computed. [2020-07-20 11:52:20,588 INFO L268 CegarLoopResult]: For program point L171(line 171) no Hoare annotation was computed. [2020-07-20 11:52:20,588 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 205) no Hoare annotation was computed. [2020-07-20 11:52:20,588 INFO L268 CegarLoopResult]: For program point L799(lines 799 949) no Hoare annotation was computed. [2020-07-20 11:52:20,588 INFO L268 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-07-20 11:52:20,589 INFO L268 CegarLoopResult]: For program point L568(lines 568 971) no Hoare annotation was computed. [2020-07-20 11:52:20,589 INFO L268 CegarLoopResult]: For program point L915(lines 915 941) no Hoare annotation was computed. [2020-07-20 11:52:20,589 INFO L268 CegarLoopResult]: For program point L783(lines 783 951) no Hoare annotation was computed. [2020-07-20 11:52:20,589 INFO L268 CegarLoopResult]: For program point L205(line 205) no Hoare annotation was computed. [2020-07-20 11:52:20,589 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 929) no Hoare annotation was computed. [2020-07-20 11:52:20,589 INFO L268 CegarLoopResult]: For program point L519(lines 519 974) no Hoare annotation was computed. [2020-07-20 11:52:20,589 INFO L264 CegarLoopResult]: At program point L866(lines 24 998) the Hoare annotation is: (and (<= 0 main_~main__t~0) (<= main_~main__t~0 main_~main__tagbuf_len~0)) [2020-07-20 11:52:20,589 INFO L268 CegarLoopResult]: For program point L255(line 255) no Hoare annotation was computed. [2020-07-20 11:52:20,589 INFO L268 CegarLoopResult]: For program point L602(lines 602 626) no Hoare annotation was computed. [2020-07-20 11:52:20,589 INFO L268 CegarLoopResult]: For program point L24(lines 24 998) no Hoare annotation was computed. [2020-07-20 11:52:20,589 INFO L268 CegarLoopResult]: For program point L817(lines 817 828) no Hoare annotation was computed. [2020-07-20 11:52:20,590 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 255) no Hoare annotation was computed. [2020-07-20 11:52:20,590 INFO L268 CegarLoopResult]: For program point L636(lines 636 965) no Hoare annotation was computed. [2020-07-20 11:52:20,590 INFO L268 CegarLoopResult]: For program point L917(line 917) no Hoare annotation was computed. [2020-07-20 11:52:20,590 INFO L268 CegarLoopResult]: For program point L851(lines 851 945) no Hoare annotation was computed. [2020-07-20 11:52:20,590 INFO L268 CegarLoopResult]: For program point L141(lines 141 234) no Hoare annotation was computed. [2020-07-20 11:52:20,590 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 217) no Hoare annotation was computed. [2020-07-20 11:52:20,590 INFO L268 CegarLoopResult]: For program point L587(lines 587 968) no Hoare annotation was computed. [2020-07-20 11:52:20,590 INFO L268 CegarLoopResult]: For program point L323(lines 323 991) no Hoare annotation was computed. [2020-07-20 11:52:20,590 INFO L268 CegarLoopResult]: For program point L670(lines 670 694) no Hoare annotation was computed. [2020-07-20 11:52:20,590 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 143) no Hoare annotation was computed. [2020-07-20 11:52:20,590 INFO L268 CegarLoopResult]: For program point L307(lines 307 993) no Hoare annotation was computed. [2020-07-20 11:52:20,591 INFO L264 CegarLoopResult]: At program point L902(lines 63 997) the Hoare annotation is: (and (<= main_~main__t~0 main_~main__tagbuf_len~0) (<= 1 main_~main__t~0)) [2020-07-20 11:52:20,591 INFO L268 CegarLoopResult]: For program point L704(lines 704 959) no Hoare annotation was computed. [2020-07-20 11:52:20,591 INFO L268 CegarLoopResult]: For program point L341(lines 341 352) no Hoare annotation was computed. [2020-07-20 11:52:20,591 INFO L268 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-07-20 11:52:20,591 INFO L268 CegarLoopResult]: For program point L655(lines 655 962) no Hoare annotation was computed. [2020-07-20 11:52:20,591 INFO L268 CegarLoopResult]: For program point L44(lines 44 54) no Hoare annotation was computed. [2020-07-20 11:52:20,591 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 267) no Hoare annotation was computed. [2020-07-20 11:52:20,592 INFO L271 CegarLoopResult]: At program point L1002(lines 20 1003) the Hoare annotation is: true [2020-07-20 11:52:20,592 INFO L268 CegarLoopResult]: For program point L391(lines 391 985) no Hoare annotation was computed. [2020-07-20 11:52:20,592 INFO L268 CegarLoopResult]: For program point L738(lines 738 762) no Hoare annotation was computed. [2020-07-20 11:52:20,592 INFO L268 CegarLoopResult]: For program point L94(lines 94 283) no Hoare annotation was computed. [2020-07-20 11:52:20,592 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 171) no Hoare annotation was computed. [2020-07-20 11:52:20,592 INFO L268 CegarLoopResult]: For program point L375(lines 375 987) no Hoare annotation was computed. [2020-07-20 11:52:20,592 INFO L268 CegarLoopResult]: For program point L772(lines 772 953) no Hoare annotation was computed. [2020-07-20 11:52:20,592 INFO L268 CegarLoopResult]: For program point L409(lines 409 420) no Hoare annotation was computed. [2020-07-20 11:52:20,592 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 155) no Hoare annotation was computed. [2020-07-20 11:52:20,593 INFO L268 CegarLoopResult]: For program point L723(lines 723 956) no Hoare annotation was computed. [2020-07-20 11:52:20,593 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-20 11:52:20,593 INFO L268 CegarLoopResult]: For program point L459(lines 459 979) no Hoare annotation was computed. [2020-07-20 11:52:20,593 INFO L264 CegarLoopResult]: At program point L938(lines 856 945) the Hoare annotation is: (let ((.cse0 (<= main_~main__t~0 main_~main__tagbuf_len~0)) (.cse1 (<= 9 main_~main__t~0))) (or (and .cse0 (<= main_~main__t~0 9) .cse1) (and .cse0 .cse1 (<= 1 main_~__VERIFIER_assert__cond~51)))) [2020-07-20 11:52:20,593 INFO L268 CegarLoopResult]: For program point L872(lines 872 943) no Hoare annotation was computed. [2020-07-20 11:52:20,593 INFO L268 CegarLoopResult]: For program point L806(lines 806 830) no Hoare annotation was computed. [2020-07-20 11:52:20,593 INFO L268 CegarLoopResult]: For program point L162(lines 162 231) no Hoare annotation was computed. [2020-07-20 11:52:20,593 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 34) no Hoare annotation was computed. [2020-07-20 11:52:20,594 INFO L268 CegarLoopResult]: For program point L63(lines 63 997) no Hoare annotation was computed. [2020-07-20 11:52:20,594 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 15 1004) the Hoare annotation is: true [2020-07-20 11:52:20,594 INFO L268 CegarLoopResult]: For program point L443(lines 443 981) no Hoare annotation was computed. [2020-07-20 11:52:20,594 INFO L268 CegarLoopResult]: For program point L113(lines 113 121) no Hoare annotation was computed. [2020-07-20 11:52:20,594 INFO L268 CegarLoopResult]: For program point L840(lines 840 947) no Hoare annotation was computed. [2020-07-20 11:52:20,594 INFO L268 CegarLoopResult]: For program point L130(lines 130 282) no Hoare annotation was computed. [2020-07-20 11:52:20,594 INFO L268 CegarLoopResult]: For program point L477(lines 477 488) no Hoare annotation was computed. [2020-07-20 11:52:20,594 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 183) no Hoare annotation was computed. [2020-07-20 11:52:20,594 INFO L268 CegarLoopResult]: For program point L791(lines 791 950) no Hoare annotation was computed. [2020-07-20 11:52:20,594 INFO L268 CegarLoopResult]: For program point L246(lines 246 281) no Hoare annotation was computed. [2020-07-20 11:52:20,594 INFO L268 CegarLoopResult]: For program point L81(lines 81 284) no Hoare annotation was computed. [2020-07-20 11:52:20,595 INFO L268 CegarLoopResult]: For program point L527(lines 527 973) no Hoare annotation was computed. [2020-07-20 11:52:20,595 INFO L268 CegarLoopResult]: For program point L296(lines 296 995) no Hoare annotation was computed. [2020-07-20 11:52:20,595 INFO L268 CegarLoopResult]: For program point L32(lines 32 56) no Hoare annotation was computed. [2020-07-20 11:52:20,595 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 103) no Hoare annotation was computed. [2020-07-20 11:52:20,595 INFO L268 CegarLoopResult]: For program point L511(lines 511 975) no Hoare annotation was computed. [2020-07-20 11:52:20,595 INFO L268 CegarLoopResult]: For program point L891(lines 891 903) no Hoare annotation was computed. [2020-07-20 11:52:20,595 INFO L264 CegarLoopResult]: At program point L280(lines 130 282) the Hoare annotation is: (and (<= main_~main__t~0 main_~main__tagbuf_len~0) (<= 1 main_~main__t~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0))) [2020-07-20 11:52:20,595 INFO L268 CegarLoopResult]: For program point L181(lines 181 189) no Hoare annotation was computed. [2020-07-20 11:52:20,595 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-20 11:52:20,595 INFO L268 CegarLoopResult]: For program point L330(lines 330 354) no Hoare annotation was computed. [2020-07-20 11:52:20,595 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2020-07-20 11:52:20,595 INFO L268 CegarLoopResult]: For program point L545(lines 545 556) no Hoare annotation was computed. [2020-07-20 11:52:20,595 INFO L268 CegarLoopResult]: For program point L215(lines 215 227) no Hoare annotation was computed. [2020-07-20 11:52:20,595 INFO L268 CegarLoopResult]: For program point L595(lines 595 967) no Hoare annotation was computed. [2020-07-20 11:52:20,595 INFO L268 CegarLoopResult]: For program point L364(lines 364 989) no Hoare annotation was computed. [2020-07-20 11:52:20,596 INFO L268 CegarLoopResult]: For program point L265(lines 265 273) no Hoare annotation was computed. [2020-07-20 11:52:20,596 INFO L268 CegarLoopResult]: For program point L579(lines 579 969) no Hoare annotation was computed. [2020-07-20 11:52:20,596 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-20 11:52:20,596 INFO L268 CegarLoopResult]: For program point L893(line 893) no Hoare annotation was computed. [2020-07-20 11:52:20,596 INFO L268 CegarLoopResult]: For program point L315(lines 315 992) no Hoare annotation was computed. [2020-07-20 11:52:20,596 INFO L268 CegarLoopResult]: For program point L183(line 183) no Hoare annotation was computed. [2020-07-20 11:52:20,596 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 881) no Hoare annotation was computed. [2020-07-20 11:52:20,596 INFO L268 CegarLoopResult]: For program point L398(lines 398 422) no Hoare annotation was computed. [2020-07-20 11:52:20,596 INFO L268 CegarLoopResult]: For program point L134(lines 134 240) no Hoare annotation was computed. [2020-07-20 11:52:20,596 INFO L268 CegarLoopResult]: For program point L101(lines 101 123) no Hoare annotation was computed. [2020-07-20 11:52:20,596 INFO L268 CegarLoopResult]: For program point L613(lines 613 624) no Hoare annotation was computed. [2020-07-20 11:52:20,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:52:20 BoogieIcfgContainer [2020-07-20 11:52:20,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:52:20,613 INFO L168 Benchmark]: Toolchain (without parser) took 63796.68 ms. Allocated memory was 137.9 MB in the beginning and 492.3 MB in the end (delta: 354.4 MB). Free memory was 102.2 MB in the beginning and 184.9 MB in the end (delta: -82.7 MB). Peak memory consumption was 366.2 MB. Max. memory is 7.1 GB. [2020-07-20 11:52:20,613 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 11:52:20,614 INFO L168 Benchmark]: CACSL2BoogieTranslator took 537.76 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 101.8 MB in the beginning and 176.2 MB in the end (delta: -74.5 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. [2020-07-20 11:52:20,614 INFO L168 Benchmark]: Boogie Preprocessor took 53.72 ms. Allocated memory is still 202.4 MB. Free memory was 176.2 MB in the beginning and 174.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:52:20,614 INFO L168 Benchmark]: RCFGBuilder took 818.49 ms. Allocated memory is still 202.4 MB. Free memory was 174.2 MB in the beginning and 123.4 MB in the end (delta: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. [2020-07-20 11:52:20,615 INFO L168 Benchmark]: TraceAbstraction took 62380.64 ms. Allocated memory was 202.4 MB in the beginning and 492.3 MB in the end (delta: 289.9 MB). Free memory was 123.4 MB in the beginning and 184.9 MB in the end (delta: -61.4 MB). Peak memory consumption was 323.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:52:20,616 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 537.76 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 101.8 MB in the beginning and 176.2 MB in the end (delta: -74.5 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.72 ms. Allocated memory is still 202.4 MB. Free memory was 176.2 MB in the beginning and 174.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 818.49 ms. Allocated memory is still 202.4 MB. Free memory was 174.2 MB in the beginning and 123.4 MB in the end (delta: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 62380.64 ms. Allocated memory was 202.4 MB in the beginning and 492.3 MB in the end (delta: 289.9 MB). Free memory was 123.4 MB in the beginning and 184.9 MB in the end (delta: -61.4 MB). Peak memory consumption was 323.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 34]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 929]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 183]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 205]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 893]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 217]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 255]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 917]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 881]: 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: 267]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 103]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 171]: 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: 115]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 46]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 856]: Loop Invariant Derived loop invariant: ((main__t <= main__tagbuf_len && main__t <= 9) && 9 <= main__t) || ((main__t <= main__tagbuf_len && 9 <= main__t) && 1 <= __VERIFIER_assert__cond) - InvariantResult [Line: 130]: Loop Invariant Derived loop invariant: (main__t <= main__tagbuf_len && 1 <= main__t) && !(main__tagbuf_len == main__t) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 0 <= main__t && main__t <= main__tagbuf_len - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: main__t <= main__tagbuf_len && 1 <= main__t - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 129 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 52.5s, OverallIterations: 49, TraceHistogramMax: 2, AutomataDifference: 26.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 9.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2785 SDtfs, 16469 SDslu, 7618 SDs, 0 SdLazy, 18092 SolverSat, 3905 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2308 GetRequests, 1331 SyntacticMatches, 59 SemanticMatches, 918 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10027 ImplicationChecksByTransitivity, 16.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=217occurred in iteration=46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 49 MinimizatonAttempts, 1918 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 63 NumberOfFragments, 51 HoareAnnotationTreeSize, 9 FomulaSimplifications, 728201119763822 FormulaSimplificationTreeSizeReduction, 3.6s HoareSimplificationTime, 9 FomulaSimplificationsInter, 43940226175110 FormulaSimplificationTreeSizeReductionInter, 6.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 12.2s InterpolantComputationTime, 1775 NumberOfCodeBlocks, 1775 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 2013 ConstructedInterpolants, 0 QuantifiedInterpolants, 733261 SizeOfPredicates, 193 NumberOfNonLiveVariables, 10609 ConjunctsInSsa, 792 ConjunctsInUnsatCore, 54 InterpolantComputations, 44 PerfectInterpolantSequences, 15/54 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...