/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.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:52:23,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:52:23,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:52:23,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:52:23,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:52:23,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:52:23,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:52:23,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:52:23,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:52:23,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:52:23,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:52:23,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:52:23,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:52:23,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:52:23,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:52:23,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:52:23,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:52:23,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:52:23,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:52:23,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:52:23,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:52:23,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:52:23,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:52:23,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:52:23,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:52:23,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:52:23,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:52:23,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:52:23,111 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 11:52:23,135 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:52:23,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:52:23,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:52:23,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:52:23,138 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:52:23,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:52:23,138 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:52:23,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:52:23,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:52:23,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:52:23,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:52:23,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:52:23,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:52:23,141 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:52:23,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:52:23,141 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:52:23,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:52:23,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:52:23,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:52:23,142 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:52:23,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:52:23,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:52:23,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:52:23,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:52:23,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:52:23,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:52:23,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:23,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:52:23,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:52:23,144 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 11:52:23,443 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:52:23,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:52:23,459 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:52:23,461 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:52:23,461 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:52:23,462 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2020-07-20 11:52:23,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fe020b41/6a0cd548045a42e8850f964046de2708/FLAG488b0b650 [2020-07-20 11:52:23,996 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:52:23,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2020-07-20 11:52:24,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fe020b41/6a0cd548045a42e8850f964046de2708/FLAG488b0b650 [2020-07-20 11:52:24,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fe020b41/6a0cd548045a42e8850f964046de2708 [2020-07-20 11:52:24,367 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:52:24,370 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:52:24,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:52:24,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:52:24,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:52:24,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:52:24" (1/1) ... [2020-07-20 11:52:24,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a88b615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:52:24, skipping insertion in model container [2020-07-20 11:52:24,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:52:24" (1/1) ... [2020-07-20 11:52:24,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:52:24,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:52:24,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:52:24,650 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:52:24,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:52:24,705 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:52:24,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:52:24 WrapperNode [2020-07-20 11:52:24,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:52:24,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:52:24,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:52:24,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:52:24,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:52:24" (1/1) ... [2020-07-20 11:52:24,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:52:24" (1/1) ... [2020-07-20 11:52:24,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:52:24" (1/1) ... [2020-07-20 11:52:24,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:52:24" (1/1) ... [2020-07-20 11:52:24,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:52:24" (1/1) ... [2020-07-20 11:52:24,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:52:24" (1/1) ... [2020-07-20 11:52:24,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:52:24" (1/1) ... [2020-07-20 11:52:24,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:52:24,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:52:24,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:52:24,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:52:24,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:52:24" (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 11:52:24,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:52:24,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:52:24,895 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 11:52:24,895 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:52:24,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:52:24,895 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 11:52:24,895 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 11:52:24,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 11:52:24,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:52:24,895 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:52:24,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:52:24,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:52:25,299 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:52:25,299 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 11:52:25,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:52:25 BoogieIcfgContainer [2020-07-20 11:52:25,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:52:25,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:52:25,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:52:25,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:52:25,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:52:24" (1/3) ... [2020-07-20 11:52:25,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f59ffd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:52:25, skipping insertion in model container [2020-07-20 11:52:25,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:52:24" (2/3) ... [2020-07-20 11:52:25,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f59ffd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:52:25, skipping insertion in model container [2020-07-20 11:52:25,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:52:25" (3/3) ... [2020-07-20 11:52:25,314 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+lhb-reducer.c [2020-07-20 11:52:25,324 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:52:25,331 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 18 error locations. [2020-07-20 11:52:25,345 INFO L251 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-07-20 11:52:25,372 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:52:25,372 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:52:25,373 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:52:25,373 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:52:25,373 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:52:25,373 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:52:25,373 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:52:25,373 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:52:25,399 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-07-20 11:52:25,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 11:52:25,405 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:25,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:52:25,407 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:25,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:25,413 INFO L82 PathProgramCache]: Analyzing trace with hash -452302183, now seen corresponding path program 1 times [2020-07-20 11:52:25,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:25,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932066615] [2020-07-20 11:52:25,422 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 11:52:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:25,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:52:25,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:25,637 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:25,644 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:25,646 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:25,660 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 11:52:25,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:25,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932066615] [2020-07-20 11:52:25,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:25,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:52:25,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247711515] [2020-07-20 11:52:25,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:52:25,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:25,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:52:25,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:52:25,693 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 4 states. [2020-07-20 11:52:25,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:25,834 INFO L93 Difference]: Finished difference Result 127 states and 170 transitions. [2020-07-20 11:52:25,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:52:25,836 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-20 11:52:25,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:25,848 INFO L225 Difference]: With dead ends: 127 [2020-07-20 11:52:25,848 INFO L226 Difference]: Without dead ends: 111 [2020-07-20 11:52:25,853 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 11:52:25,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-07-20 11:52:25,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 73. [2020-07-20 11:52:25,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-07-20 11:52:25,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-07-20 11:52:25,902 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 12 [2020-07-20 11:52:25,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:25,903 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-07-20 11:52:25,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:52:25,904 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-07-20 11:52:25,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 11:52:25,904 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:25,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:52:26,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:26,120 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:26,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:26,121 INFO L82 PathProgramCache]: Analyzing trace with hash -449131431, now seen corresponding path program 1 times [2020-07-20 11:52:26,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:26,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410709987] [2020-07-20 11:52:26,122 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 11:52:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:26,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:52:26,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:26,203 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:26,211 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:26,241 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 11:52:26,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:26,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410709987] [2020-07-20 11:52:26,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:26,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:52:26,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773842793] [2020-07-20 11:52:26,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:52:26,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:26,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:52:26,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:52:26,246 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 4 states. [2020-07-20 11:52:26,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:26,370 INFO L93 Difference]: Finished difference Result 111 states and 117 transitions. [2020-07-20 11:52:26,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:52:26,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-20 11:52:26,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:26,373 INFO L225 Difference]: With dead ends: 111 [2020-07-20 11:52:26,374 INFO L226 Difference]: Without dead ends: 109 [2020-07-20 11:52:26,375 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 11:52:26,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-20 11:52:26,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 71. [2020-07-20 11:52:26,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-07-20 11:52:26,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-07-20 11:52:26,387 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 12 [2020-07-20 11:52:26,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:26,387 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-07-20 11:52:26,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:52:26,387 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-07-20 11:52:26,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 11:52:26,388 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:26,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:52:26,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:26,603 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:26,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:26,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1218997650, now seen corresponding path program 1 times [2020-07-20 11:52:26,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:26,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767529461] [2020-07-20 11:52:26,605 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 11:52:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:26,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:52:26,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:26,675 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:26,677 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:26,684 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 11:52:26,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:26,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767529461] [2020-07-20 11:52:26,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:26,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:52:26,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175669953] [2020-07-20 11:52:26,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:52:26,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:26,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:52:26,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:52:26,687 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 5 states. [2020-07-20 11:52:26,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:26,774 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2020-07-20 11:52:26,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:52:26,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-07-20 11:52:26,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:26,776 INFO L225 Difference]: With dead ends: 73 [2020-07-20 11:52:26,776 INFO L226 Difference]: Without dead ends: 71 [2020-07-20 11:52:26,776 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 11:52:26,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-07-20 11:52:26,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2020-07-20 11:52:26,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-20 11:52:26,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-07-20 11:52:26,785 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 15 [2020-07-20 11:52:26,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:26,785 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-07-20 11:52:26,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:52:26,785 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-07-20 11:52:26,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 11:52:26,786 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:26,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:52:26,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:27,000 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:27,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:27,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1248304044, now seen corresponding path program 1 times [2020-07-20 11:52:27,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:27,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174801299] [2020-07-20 11:52:27,001 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 11:52:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:27,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:52:27,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:27,058 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:27,070 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 11:52:27,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:27,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174801299] [2020-07-20 11:52:27,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:27,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:52:27,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258837215] [2020-07-20 11:52:27,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:52:27,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:27,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:52:27,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:52:27,073 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 5 states. [2020-07-20 11:52:27,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:27,154 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-07-20 11:52:27,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:52:27,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-07-20 11:52:27,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:27,156 INFO L225 Difference]: With dead ends: 71 [2020-07-20 11:52:27,156 INFO L226 Difference]: Without dead ends: 69 [2020-07-20 11:52:27,156 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 11:52:27,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-20 11:52:27,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-07-20 11:52:27,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-20 11:52:27,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-07-20 11:52:27,163 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 15 [2020-07-20 11:52:27,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:27,164 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-07-20 11:52:27,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:52:27,164 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-07-20 11:52:27,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 11:52:27,165 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:27,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:52:27,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:27,380 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:27,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:27,381 INFO L82 PathProgramCache]: Analyzing trace with hash 865781601, now seen corresponding path program 1 times [2020-07-20 11:52:27,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:27,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002476910] [2020-07-20 11:52:27,382 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 11:52:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:27,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:52:27,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:27,434 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:27,436 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:27,445 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 11:52:27,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:27,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002476910] [2020-07-20 11:52:27,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:27,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:52:27,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283259391] [2020-07-20 11:52:27,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:52:27,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:27,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:52:27,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:52:27,447 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 4 states. [2020-07-20 11:52:27,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:27,501 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-07-20 11:52:27,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 11:52:27,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-07-20 11:52:27,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:27,503 INFO L225 Difference]: With dead ends: 69 [2020-07-20 11:52:27,503 INFO L226 Difference]: Without dead ends: 65 [2020-07-20 11:52:27,504 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 11:52:27,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-07-20 11:52:27,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2020-07-20 11:52:27,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-07-20 11:52:27,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-07-20 11:52:27,510 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 16 [2020-07-20 11:52:27,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:27,510 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-07-20 11:52:27,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:52:27,511 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-07-20 11:52:27,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 11:52:27,512 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:27,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:52:27,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:27,725 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:27,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:27,726 INFO L82 PathProgramCache]: Analyzing trace with hash -42274612, now seen corresponding path program 1 times [2020-07-20 11:52:27,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:27,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116865610] [2020-07-20 11:52:27,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:52:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:27,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:52:27,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:27,780 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:27,781 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:27,787 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 11:52:27,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:27,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116865610] [2020-07-20 11:52:27,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:27,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:52:27,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323834600] [2020-07-20 11:52:27,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:52:27,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:27,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:52:27,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:52:27,790 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 5 states. [2020-07-20 11:52:27,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:27,904 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2020-07-20 11:52:27,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:52:27,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-20 11:52:27,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:27,906 INFO L225 Difference]: With dead ends: 108 [2020-07-20 11:52:27,906 INFO L226 Difference]: Without dead ends: 106 [2020-07-20 11:52:27,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 11:52:27,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-07-20 11:52:27,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 61. [2020-07-20 11:52:27,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-20 11:52:27,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-07-20 11:52:27,914 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 16 [2020-07-20 11:52:27,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:27,914 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-07-20 11:52:27,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:52:27,915 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-07-20 11:52:27,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 11:52:27,915 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:27,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:52:28,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:28,132 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:28,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:28,133 INFO L82 PathProgramCache]: Analyzing trace with hash -42288514, now seen corresponding path program 1 times [2020-07-20 11:52:28,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:28,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964599120] [2020-07-20 11:52:28,134 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 11:52:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:28,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:52:28,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:28,188 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:28,191 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:28,201 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 11:52:28,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:28,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964599120] [2020-07-20 11:52:28,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:28,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:52:28,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990426840] [2020-07-20 11:52:28,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:52:28,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:28,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:52:28,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:52:28,204 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 5 states. [2020-07-20 11:52:28,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:28,317 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2020-07-20 11:52:28,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:52:28,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-20 11:52:28,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:28,319 INFO L225 Difference]: With dead ends: 93 [2020-07-20 11:52:28,319 INFO L226 Difference]: Without dead ends: 91 [2020-07-20 11:52:28,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 11:52:28,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-07-20 11:52:28,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 59. [2020-07-20 11:52:28,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-20 11:52:28,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-07-20 11:52:28,331 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 16 [2020-07-20 11:52:28,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:28,332 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-07-20 11:52:28,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:52:28,332 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-07-20 11:52:28,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 11:52:28,335 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:28,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:52:28,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:28,537 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:28,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:28,537 INFO L82 PathProgramCache]: Analyzing trace with hash -42716511, now seen corresponding path program 1 times [2020-07-20 11:52:28,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:28,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758740391] [2020-07-20 11:52:28,538 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 11:52:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:28,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:52:28,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:28,588 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:28,599 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 11:52:28,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:28,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758740391] [2020-07-20 11:52:28,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:28,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:52:28,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104298257] [2020-07-20 11:52:28,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:52:28,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:28,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:52:28,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:52:28,602 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 4 states. [2020-07-20 11:52:28,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:28,660 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-07-20 11:52:28,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 11:52:28,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-07-20 11:52:28,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:28,661 INFO L225 Difference]: With dead ends: 61 [2020-07-20 11:52:28,661 INFO L226 Difference]: Without dead ends: 57 [2020-07-20 11:52:28,662 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 11:52:28,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-20 11:52:28,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-07-20 11:52:28,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-20 11:52:28,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-07-20 11:52:28,667 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 16 [2020-07-20 11:52:28,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:28,667 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-07-20 11:52:28,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:52:28,667 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-07-20 11:52:28,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 11:52:28,668 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:28,668 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 11:52:28,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:28,881 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:28,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:28,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1083648192, now seen corresponding path program 1 times [2020-07-20 11:52:28,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:28,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710101744] [2020-07-20 11:52:28,883 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 11:52:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:28,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:52:28,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:28,943 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:28,949 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:28,971 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 11:52:28,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:28,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710101744] [2020-07-20 11:52:28,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:28,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:52:28,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929264527] [2020-07-20 11:52:28,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:52:28,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:28,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:52:28,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:52:28,976 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 5 states. [2020-07-20 11:52:29,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:29,054 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2020-07-20 11:52:29,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:52:29,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-20 11:52:29,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:29,056 INFO L225 Difference]: With dead ends: 74 [2020-07-20 11:52:29,056 INFO L226 Difference]: Without dead ends: 72 [2020-07-20 11:52:29,057 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 11:52:29,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-07-20 11:52:29,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 53. [2020-07-20 11:52:29,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-20 11:52:29,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-07-20 11:52:29,062 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 17 [2020-07-20 11:52:29,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:29,062 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-07-20 11:52:29,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:52:29,062 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-07-20 11:52:29,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 11:52:29,063 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:29,063 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 11:52:29,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:29,275 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:29,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:29,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1085187392, now seen corresponding path program 1 times [2020-07-20 11:52:29,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:29,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544162126] [2020-07-20 11:52:29,277 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 11:52:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:29,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:52:29,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:29,326 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:29,336 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 11:52:29,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:29,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544162126] [2020-07-20 11:52:29,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:29,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:52:29,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086418539] [2020-07-20 11:52:29,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:52:29,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:29,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:52:29,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:52:29,339 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 5 states. [2020-07-20 11:52:29,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:29,407 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2020-07-20 11:52:29,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:52:29,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-20 11:52:29,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:29,408 INFO L225 Difference]: With dead ends: 55 [2020-07-20 11:52:29,408 INFO L226 Difference]: Without dead ends: 53 [2020-07-20 11:52:29,409 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 11:52:29,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-07-20 11:52:29,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-07-20 11:52:29,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-07-20 11:52:29,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-07-20 11:52:29,413 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 17 [2020-07-20 11:52:29,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:29,413 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-07-20 11:52:29,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:52:29,414 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-07-20 11:52:29,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 11:52:29,414 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:29,414 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 11:52:29,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:29,616 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:29,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:29,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1310509752, now seen corresponding path program 1 times [2020-07-20 11:52:29,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:29,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134146223] [2020-07-20 11:52:29,617 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 11:52:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:29,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 11:52:29,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:29,709 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:29,711 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:52:29,719 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 11:52:29,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:29,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134146223] [2020-07-20 11:52:29,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:29,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 11:52:29,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783318572] [2020-07-20 11:52:29,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:52:29,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:29,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:52:29,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:52:29,721 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 6 states. [2020-07-20 11:52:29,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:29,859 INFO L93 Difference]: Finished difference Result 118 states and 128 transitions. [2020-07-20 11:52:29,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:52:29,860 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-20 11:52:29,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:29,863 INFO L225 Difference]: With dead ends: 118 [2020-07-20 11:52:29,863 INFO L226 Difference]: Without dead ends: 116 [2020-07-20 11:52:29,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 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 11:52:29,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-07-20 11:52:29,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 56. [2020-07-20 11:52:29,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-20 11:52:29,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-07-20 11:52:29,870 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 17 [2020-07-20 11:52:29,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:29,871 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-07-20 11:52:29,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:52:29,871 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-07-20 11:52:29,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 11:52:29,871 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:29,872 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 11:52:30,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:30,087 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:30,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:30,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1310940728, now seen corresponding path program 1 times [2020-07-20 11:52:30,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:30,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473143788] [2020-07-20 11:52:30,089 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 11:52:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:30,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 11:52:30,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:30,165 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:30,167 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:52:30,175 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 11:52:30,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:30,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473143788] [2020-07-20 11:52:30,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:30,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 11:52:30,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141289340] [2020-07-20 11:52:30,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:52:30,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:30,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:52:30,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:52:30,178 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 6 states. [2020-07-20 11:52:30,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:30,308 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2020-07-20 11:52:30,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:52:30,309 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-20 11:52:30,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:30,311 INFO L225 Difference]: With dead ends: 108 [2020-07-20 11:52:30,311 INFO L226 Difference]: Without dead ends: 106 [2020-07-20 11:52:30,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 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 11:52:30,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-07-20 11:52:30,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 58. [2020-07-20 11:52:30,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-07-20 11:52:30,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-07-20 11:52:30,319 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 17 [2020-07-20 11:52:30,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:30,319 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-07-20 11:52:30,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:52:30,319 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-07-20 11:52:30,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 11:52:30,320 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:30,320 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 11:52:30,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:30,525 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:30,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:30,526 INFO L82 PathProgramCache]: Analyzing trace with hash -765275888, now seen corresponding path program 1 times [2020-07-20 11:52:30,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:30,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810731512] [2020-07-20 11:52:30,527 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 11:52:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:30,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:52:30,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:30,593 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:30,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:52:30,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:30,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810731512] [2020-07-20 11:52:30,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:30,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:52:30,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136789473] [2020-07-20 11:52:30,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:52:30,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:30,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:52:30,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:52:30,605 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 5 states. [2020-07-20 11:52:30,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:30,684 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2020-07-20 11:52:30,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:52:30,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-20 11:52:30,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:30,685 INFO L225 Difference]: With dead ends: 79 [2020-07-20 11:52:30,685 INFO L226 Difference]: Without dead ends: 77 [2020-07-20 11:52:30,686 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 11:52:30,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-07-20 11:52:30,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 56. [2020-07-20 11:52:30,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-20 11:52:30,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-07-20 11:52:30,697 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 18 [2020-07-20 11:52:30,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:30,698 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-07-20 11:52:30,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:52:30,698 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-07-20 11:52:30,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 11:52:30,698 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:30,699 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 11:52:30,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:30,912 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:30,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:30,913 INFO L82 PathProgramCache]: Analyzing trace with hash -766641308, now seen corresponding path program 1 times [2020-07-20 11:52:30,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:30,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807418010] [2020-07-20 11:52:30,914 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 11:52:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:30,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 11:52:30,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:30,985 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:30,987 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:52:30,996 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 11:52:30,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:30,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807418010] [2020-07-20 11:52:30,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:30,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 11:52:30,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716269094] [2020-07-20 11:52:30,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:52:30,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:30,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:52:30,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:52:30,999 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 6 states. [2020-07-20 11:52:31,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:31,134 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2020-07-20 11:52:31,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:52:31,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-20 11:52:31,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:31,137 INFO L225 Difference]: With dead ends: 97 [2020-07-20 11:52:31,137 INFO L226 Difference]: Without dead ends: 95 [2020-07-20 11:52:31,137 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 11:52:31,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-07-20 11:52:31,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 62. [2020-07-20 11:52:31,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-20 11:52:31,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2020-07-20 11:52:31,145 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 18 [2020-07-20 11:52:31,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:31,145 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2020-07-20 11:52:31,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:52:31,145 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2020-07-20 11:52:31,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 11:52:31,146 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:31,146 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 11:52:31,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:31,347 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:31,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:31,348 INFO L82 PathProgramCache]: Analyzing trace with hash -718926058, now seen corresponding path program 1 times [2020-07-20 11:52:31,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:31,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724076691] [2020-07-20 11:52:31,349 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 11:52:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:31,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 11:52:31,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:31,432 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:31,434 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:52:31,440 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 11:52:31,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:31,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724076691] [2020-07-20 11:52:31,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:31,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 11:52:31,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504168778] [2020-07-20 11:52:31,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:52:31,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:31,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:52:31,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:52:31,443 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand 6 states. [2020-07-20 11:52:31,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:31,542 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2020-07-20 11:52:31,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 11:52:31,543 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-20 11:52:31,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:31,543 INFO L225 Difference]: With dead ends: 74 [2020-07-20 11:52:31,544 INFO L226 Difference]: Without dead ends: 70 [2020-07-20 11:52:31,544 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 11:52:31,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-20 11:52:31,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 63. [2020-07-20 11:52:31,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-07-20 11:52:31,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2020-07-20 11:52:31,552 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 18 [2020-07-20 11:52:31,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:31,552 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2020-07-20 11:52:31,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:52:31,553 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2020-07-20 11:52:31,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 11:52:31,555 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:31,556 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 11:52:31,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:31,769 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:31,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:31,769 INFO L82 PathProgramCache]: Analyzing trace with hash 2046254387, now seen corresponding path program 1 times [2020-07-20 11:52:31,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:31,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581110833] [2020-07-20 11:52:31,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:52:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:31,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 11:52:31,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:31,854 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:31,858 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:52:31,868 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 11:52:31,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:31,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581110833] [2020-07-20 11:52:31,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:31,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 11:52:31,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804833479] [2020-07-20 11:52:31,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:52:31,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:31,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:52:31,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:52:31,872 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 6 states. [2020-07-20 11:52:32,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:32,006 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-07-20 11:52:32,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:52:32,006 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-07-20 11:52:32,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:32,007 INFO L225 Difference]: With dead ends: 91 [2020-07-20 11:52:32,007 INFO L226 Difference]: Without dead ends: 89 [2020-07-20 11:52:32,008 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 11:52:32,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-07-20 11:52:32,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 66. [2020-07-20 11:52:32,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-07-20 11:52:32,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-07-20 11:52:32,013 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 19 [2020-07-20 11:52:32,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:32,013 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-07-20 11:52:32,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:52:32,013 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-07-20 11:52:32,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 11:52:32,014 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:32,014 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 11:52:32,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:32,215 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:32,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:32,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1992174599, now seen corresponding path program 1 times [2020-07-20 11:52:32,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:32,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623934544] [2020-07-20 11:52:32,217 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 11:52:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:32,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:52:32,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:32,268 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:52:32,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:32,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623934544] [2020-07-20 11:52:32,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:32,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 11:52:32,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117314384] [2020-07-20 11:52:32,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:52:32,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:32,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:52:32,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:52:32,279 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 6 states. [2020-07-20 11:52:32,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:32,378 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2020-07-20 11:52:32,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 11:52:32,379 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-07-20 11:52:32,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:32,380 INFO L225 Difference]: With dead ends: 68 [2020-07-20 11:52:32,380 INFO L226 Difference]: Without dead ends: 66 [2020-07-20 11:52:32,381 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 11:52:32,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-07-20 11:52:32,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-07-20 11:52:32,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-20 11:52:32,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2020-07-20 11:52:32,386 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 20 [2020-07-20 11:52:32,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:32,386 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 71 transitions. [2020-07-20 11:52:32,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:52:32,386 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2020-07-20 11:52:32,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 11:52:32,387 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:32,387 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 11:52:32,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:32,590 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:32,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:32,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1627873548, now seen corresponding path program 1 times [2020-07-20 11:52:32,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:32,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839722379] [2020-07-20 11:52:32,592 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 11:52:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:32,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:52:32,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:32,640 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:32,646 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 11:52:32,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:32,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839722379] [2020-07-20 11:52:32,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:32,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:52:32,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158735437] [2020-07-20 11:52:32,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:52:32,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:32,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:52:32,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:52:32,648 INFO L87 Difference]: Start difference. First operand 64 states and 71 transitions. Second operand 4 states. [2020-07-20 11:52:32,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:32,695 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2020-07-20 11:52:32,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 11:52:32,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-07-20 11:52:32,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:32,696 INFO L225 Difference]: With dead ends: 64 [2020-07-20 11:52:32,697 INFO L226 Difference]: Without dead ends: 60 [2020-07-20 11:52:32,697 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 11:52:32,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-20 11:52:32,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-07-20 11:52:32,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-20 11:52:32,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-07-20 11:52:32,702 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 21 [2020-07-20 11:52:32,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:32,702 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-07-20 11:52:32,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:52:32,702 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-07-20 11:52:32,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 11:52:32,703 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:32,703 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 11:52:32,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:32,904 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:32,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:32,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1062287301, now seen corresponding path program 1 times [2020-07-20 11:52:32,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:32,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509432751] [2020-07-20 11:52:32,906 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 11:52:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:32,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 11:52:32,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:33,014 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:33,016 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:52:33,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:52:33,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:33,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509432751] [2020-07-20 11:52:33,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:33,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 11:52:33,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694602827] [2020-07-20 11:52:33,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 11:52:33,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:33,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 11:52:33,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:52:33,030 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 8 states. [2020-07-20 11:52:33,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:33,204 INFO L93 Difference]: Finished difference Result 121 states and 135 transitions. [2020-07-20 11:52:33,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 11:52:33,205 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-07-20 11:52:33,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:33,205 INFO L225 Difference]: With dead ends: 121 [2020-07-20 11:52:33,206 INFO L226 Difference]: Without dead ends: 119 [2020-07-20 11:52:33,206 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 11:52:33,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-07-20 11:52:33,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 69. [2020-07-20 11:52:33,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-20 11:52:33,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2020-07-20 11:52:33,212 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 22 [2020-07-20 11:52:33,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:33,213 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2020-07-20 11:52:33,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 11:52:33,213 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2020-07-20 11:52:33,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 11:52:33,213 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:33,214 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:52:33,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:33,415 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:33,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:33,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1277783017, now seen corresponding path program 1 times [2020-07-20 11:52:33,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:33,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693463775] [2020-07-20 11:52:33,416 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 11:52:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:33,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 11:52:33,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:33,531 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:33,533 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:52:33,547 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 11:52:33,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:52:33,563 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:52:33,615 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 11:52:33,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693463775] [2020-07-20 11:52:33,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:52:33,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 10 [2020-07-20 11:52:33,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127659729] [2020-07-20 11:52:33,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 11:52:33,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:33,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 11:52:33,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-07-20 11:52:33,617 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand 10 states. [2020-07-20 11:52:33,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:33,893 INFO L93 Difference]: Finished difference Result 106 states and 119 transitions. [2020-07-20 11:52:33,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-20 11:52:33,893 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-07-20 11:52:33,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:33,894 INFO L225 Difference]: With dead ends: 106 [2020-07-20 11:52:33,894 INFO L226 Difference]: Without dead ends: 104 [2020-07-20 11:52:33,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-07-20 11:52:33,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-07-20 11:52:33,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 65. [2020-07-20 11:52:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-20 11:52:33,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2020-07-20 11:52:33,902 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 22 [2020-07-20 11:52:33,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:33,903 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2020-07-20 11:52:33,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 11:52:33,904 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2020-07-20 11:52:33,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 11:52:33,905 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:33,905 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] [2020-07-20 11:52:34,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:34,117 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:34,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:34,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1277352041, now seen corresponding path program 1 times [2020-07-20 11:52:34,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:34,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098433436] [2020-07-20 11:52:34,118 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 11:52:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:34,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 11:52:34,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:34,231 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:34,233 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:52:34,244 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 11:52:34,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:52:34,249 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:52:34,291 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 11:52:34,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098433436] [2020-07-20 11:52:34,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:52:34,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 10 [2020-07-20 11:52:34,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980379900] [2020-07-20 11:52:34,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 11:52:34,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:34,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 11:52:34,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-07-20 11:52:34,292 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 10 states. [2020-07-20 11:52:34,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:34,569 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2020-07-20 11:52:34,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-20 11:52:34,569 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-07-20 11:52:34,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:34,570 INFO L225 Difference]: With dead ends: 117 [2020-07-20 11:52:34,570 INFO L226 Difference]: Without dead ends: 115 [2020-07-20 11:52:34,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-07-20 11:52:34,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-07-20 11:52:34,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 63. [2020-07-20 11:52:34,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-07-20 11:52:34,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2020-07-20 11:52:34,576 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 22 [2020-07-20 11:52:34,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:34,577 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2020-07-20 11:52:34,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 11:52:34,577 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2020-07-20 11:52:34,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 11:52:34,577 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:34,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:52:34,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:34,789 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:34,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:34,789 INFO L82 PathProgramCache]: Analyzing trace with hash 392830346, now seen corresponding path program 1 times [2020-07-20 11:52:34,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:34,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972172867] [2020-07-20 11:52:34,790 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 11:52:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:34,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 11:52:34,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:34,889 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:34,891 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:52:34,897 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 11:52:34,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:34,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972172867] [2020-07-20 11:52:34,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:34,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 11:52:34,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627466836] [2020-07-20 11:52:34,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 11:52:34,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:34,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 11:52:34,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:52:34,900 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand 8 states. [2020-07-20 11:52:35,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:35,108 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-07-20 11:52:35,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 11:52:35,113 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-07-20 11:52:35,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:35,114 INFO L225 Difference]: With dead ends: 100 [2020-07-20 11:52:35,114 INFO L226 Difference]: Without dead ends: 98 [2020-07-20 11:52:35,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 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 11:52:35,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-07-20 11:52:35,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 65. [2020-07-20 11:52:35,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-20 11:52:35,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2020-07-20 11:52:35,121 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 23 [2020-07-20 11:52:35,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:35,122 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2020-07-20 11:52:35,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 11:52:35,122 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2020-07-20 11:52:35,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 11:52:35,122 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:35,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:52:35,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:35,335 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:35,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:35,335 INFO L82 PathProgramCache]: Analyzing trace with hash 440545596, now seen corresponding path program 1 times [2020-07-20 11:52:35,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:35,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359387114] [2020-07-20 11:52:35,336 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 11:52:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:35,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 11:52:35,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:35,440 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:35,441 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:52:35,455 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 11:52:35,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:35,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359387114] [2020-07-20 11:52:35,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:35,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 11:52:35,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192445339] [2020-07-20 11:52:35,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 11:52:35,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:35,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 11:52:35,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:52:35,457 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 8 states. [2020-07-20 11:52:35,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:35,601 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-07-20 11:52:35,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 11:52:35,602 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-07-20 11:52:35,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:35,602 INFO L225 Difference]: With dead ends: 80 [2020-07-20 11:52:35,603 INFO L226 Difference]: Without dead ends: 76 [2020-07-20 11:52:35,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 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 11:52:35,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-20 11:52:35,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2020-07-20 11:52:35,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-20 11:52:35,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2020-07-20 11:52:35,608 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 23 [2020-07-20 11:52:35,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:35,608 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2020-07-20 11:52:35,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 11:52:35,608 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2020-07-20 11:52:35,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 11:52:35,609 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:35,609 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] [2020-07-20 11:52:35,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:35,820 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:35,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:35,821 INFO L82 PathProgramCache]: Analyzing trace with hash 2075825047, now seen corresponding path program 1 times [2020-07-20 11:52:35,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:35,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618585524] [2020-07-20 11:52:35,821 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 11:52:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:35,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 11:52:35,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:35,964 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:35,965 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:52:35,980 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 11:52:35,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:52:35,992 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:52:36,059 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 11:52:36,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618585524] [2020-07-20 11:52:36,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:52:36,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 12 [2020-07-20 11:52:36,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330604908] [2020-07-20 11:52:36,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 11:52:36,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:36,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 11:52:36,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-20 11:52:36,061 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 12 states. [2020-07-20 11:52:36,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:36,347 INFO L93 Difference]: Finished difference Result 131 states and 149 transitions. [2020-07-20 11:52:36,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-20 11:52:36,351 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-07-20 11:52:36,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:36,352 INFO L225 Difference]: With dead ends: 131 [2020-07-20 11:52:36,353 INFO L226 Difference]: Without dead ends: 129 [2020-07-20 11:52:36,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2020-07-20 11:52:36,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-07-20 11:52:36,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 61. [2020-07-20 11:52:36,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-20 11:52:36,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2020-07-20 11:52:36,359 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 27 [2020-07-20 11:52:36,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:36,359 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2020-07-20 11:52:36,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 11:52:36,359 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2020-07-20 11:52:36,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 11:52:36,360 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:36,360 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:52:36,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:36,563 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:36,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:36,564 INFO L82 PathProgramCache]: Analyzing trace with hash 2123540297, now seen corresponding path program 1 times [2020-07-20 11:52:36,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:36,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016851870] [2020-07-20 11:52:36,565 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 11:52:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:36,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 11:52:36,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:36,733 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:36,735 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:52:36,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:52:36,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:52:36,754 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:52:36,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 11:52:36,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016851870] [2020-07-20 11:52:36,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:52:36,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 12 [2020-07-20 11:52:36,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593994286] [2020-07-20 11:52:36,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 11:52:36,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:36,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 11:52:36,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-20 11:52:36,821 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand 12 states. [2020-07-20 11:52:37,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:37,017 INFO L93 Difference]: Finished difference Result 96 states and 110 transitions. [2020-07-20 11:52:37,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 11:52:37,017 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-07-20 11:52:37,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:37,018 INFO L225 Difference]: With dead ends: 96 [2020-07-20 11:52:37,018 INFO L226 Difference]: Without dead ends: 90 [2020-07-20 11:52:37,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-07-20 11:52:37,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-07-20 11:52:37,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 57. [2020-07-20 11:52:37,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-20 11:52:37,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-07-20 11:52:37,023 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 27 [2020-07-20 11:52:37,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:37,024 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-07-20 11:52:37,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 11:52:37,024 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-07-20 11:52:37,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 11:52:37,024 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:37,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:52:37,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:37,237 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:37,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:37,238 INFO L82 PathProgramCache]: Analyzing trace with hash -117348511, now seen corresponding path program 1 times [2020-07-20 11:52:37,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:37,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573791602] [2020-07-20 11:52:37,239 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 11:52:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:37,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 11:52:37,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:37,374 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:37,376 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:52:37,388 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 11:52:37,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:52:37,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573791602] [2020-07-20 11:52:37,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:52:37,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-20 11:52:37,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588641845] [2020-07-20 11:52:37,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 11:52:37,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:37,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 11:52:37,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-07-20 11:52:37,390 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 10 states. [2020-07-20 11:52:37,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:37,601 INFO L93 Difference]: Finished difference Result 116 states and 135 transitions. [2020-07-20 11:52:37,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 11:52:37,602 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-07-20 11:52:37,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:37,603 INFO L225 Difference]: With dead ends: 116 [2020-07-20 11:52:37,603 INFO L226 Difference]: Without dead ends: 114 [2020-07-20 11:52:37,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 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 11:52:37,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-07-20 11:52:37,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 75. [2020-07-20 11:52:37,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-20 11:52:37,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2020-07-20 11:52:37,610 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 27 [2020-07-20 11:52:37,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:37,610 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2020-07-20 11:52:37,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 11:52:37,611 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2020-07-20 11:52:37,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 11:52:37,611 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:52:37,611 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:52:37,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:37,815 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:52:37,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:52:37,816 INFO L82 PathProgramCache]: Analyzing trace with hash 886968046, now seen corresponding path program 1 times [2020-07-20 11:52:37,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:52:37,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131095376] [2020-07-20 11:52:37,817 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 11:52:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:52:37,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 11:52:37,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:52:37,992 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:52:37,993 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:52:38,002 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:52:38,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:52:38,009 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:52:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-20 11:52:38,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131095376] [2020-07-20 11:52:38,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:52:38,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 14 [2020-07-20 11:52:38,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230780470] [2020-07-20 11:52:38,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 11:52:38,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:38,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 11:52:38,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2020-07-20 11:52:38,084 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand 14 states. [2020-07-20 11:52:38,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:52:38,451 INFO L93 Difference]: Finished difference Result 141 states and 166 transitions. [2020-07-20 11:52:38,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-20 11:52:38,452 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-07-20 11:52:38,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:52:38,452 INFO L225 Difference]: With dead ends: 141 [2020-07-20 11:52:38,452 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:52:38,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2020-07-20 11:52:38,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:52:38,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:52:38,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:52:38,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:52:38,454 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-07-20 11:52:38,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:52:38,455 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:52:38,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 11:52:38,455 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:52:38,455 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:52:38,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:52:38,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:52:38,968 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 48 [2020-07-20 11:52:39,098 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 43 [2020-07-20 11:52:39,283 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 96 [2020-07-20 11:52:39,482 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 86 [2020-07-20 11:52:40,313 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 25 [2020-07-20 11:52:40,814 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 18 [2020-07-20 11:52:40,817 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:52:40,817 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:52:40,817 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:52:40,817 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:52:40,817 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 11:52:40,818 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:52:40,818 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:52:40,818 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-20 11:52:40,818 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-20 11:52:40,818 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-07-20 11:52:40,818 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-20 11:52:40,818 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 112) no Hoare annotation was computed. [2020-07-20 11:52:40,818 INFO L264 CegarLoopResult]: At program point L382(lines 280 389) the Hoare annotation is: (let ((.cse0 (<= 0 main_~main__t~0)) (.cse1 (<= 1 main_~__VERIFIER_assert__cond~13))) (or (and .cse0 (<= main_~main__t~0 0) (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)) .cse1) (and (< main_~main__t~0 main_~main__tagbuf_len~0) .cse0 (<= 1 main_~__VERIFIER_assert__cond~19) .cse1))) [2020-07-20 11:52:40,819 INFO L264 CegarLoopResult]: At program point L349(lines 30 393) the Hoare annotation is: (let ((.cse0 (<= 1 main_~main__t~0)) (.cse1 (<= 1 main_~__VERIFIER_assert__cond~17)) (.cse3 (not (= main_~main__tagbuf_len~0 main_~main__t~0))) (.cse2 (<= 1 main_~__VERIFIER_assert__cond~13))) (or (and (< main_~main__t~0 main_~main__tagbuf_len~0) (<= 1 main_~__VERIFIER_assert__cond~19) .cse0 .cse1 .cse2) (and (<= 0 main_~main__t~0) (<= main_~main__t~0 0) (<= 0 main_~main__tagbuf_len~0) .cse3) (and (<= main_~main__t~0 main_~main__tagbuf_len~0) .cse0 (<= main_~main__t~0 1) .cse1 .cse3 .cse2))) [2020-07-20 11:52:40,819 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 400) no Hoare annotation was computed. [2020-07-20 11:52:40,819 INFO L268 CegarLoopResult]: For program point L184(lines 184 194) no Hoare annotation was computed. [2020-07-20 11:52:40,819 INFO L268 CegarLoopResult]: For program point L374(lines 374 383) no Hoare annotation was computed. [2020-07-20 11:52:40,819 INFO L268 CegarLoopResult]: For program point L341(lines 341 350) no Hoare annotation was computed. [2020-07-20 11:52:40,819 INFO L268 CegarLoopResult]: For program point L110(lines 110 201) no Hoare annotation was computed. [2020-07-20 11:52:40,819 INFO L268 CegarLoopResult]: For program point L234(line 234) no Hoare annotation was computed. [2020-07-20 11:52:40,820 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 276) no Hoare annotation was computed. [2020-07-20 11:52:40,820 INFO L264 CegarLoopResult]: At program point L193(lines 54 251) the Hoare annotation is: (and (<= main_~main__t~0 main_~main__tagbuf_len~0) (<= 1 main_~main__t~0)) [2020-07-20 11:52:40,820 INFO L268 CegarLoopResult]: For program point L152(line 152) no Hoare annotation was computed. [2020-07-20 11:52:40,820 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 152) no Hoare annotation was computed. [2020-07-20 11:52:40,820 INFO L268 CegarLoopResult]: For program point L276(line 276) no Hoare annotation was computed. [2020-07-20 11:52:40,820 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 331) no Hoare annotation was computed. [2020-07-20 11:52:40,820 INFO L268 CegarLoopResult]: For program point L103(lines 103 207) no Hoare annotation was computed. [2020-07-20 11:52:40,820 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-20 11:52:40,820 INFO L268 CegarLoopResult]: For program point L37(lines 37 253) no Hoare annotation was computed. [2020-07-20 11:52:40,820 INFO L268 CegarLoopResult]: For program point L293(lines 293 315) no Hoare annotation was computed. [2020-07-20 11:52:40,820 INFO L268 CegarLoopResult]: For program point L186(line 186) no Hoare annotation was computed. [2020-07-20 11:52:40,820 INFO L268 CegarLoopResult]: For program point L376(line 376) no Hoare annotation was computed. [2020-07-20 11:52:40,821 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 140) no Hoare annotation was computed. [2020-07-20 11:52:40,821 INFO L268 CegarLoopResult]: For program point L343(line 343) no Hoare annotation was computed. [2020-07-20 11:52:40,821 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-20 11:52:40,821 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 400) no Hoare annotation was computed. [2020-07-20 11:52:40,821 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 307) no Hoare annotation was computed. [2020-07-20 11:52:40,821 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2020-07-20 11:52:40,821 INFO L268 CegarLoopResult]: For program point L30(lines 30 393) no Hoare annotation was computed. [2020-07-20 11:52:40,821 INFO L268 CegarLoopResult]: For program point L286(lines 286 388) no Hoare annotation was computed. [2020-07-20 11:52:40,821 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 400) the Hoare annotation is: true [2020-07-20 11:52:40,822 INFO L268 CegarLoopResult]: For program point L220(lines 220 242) no Hoare annotation was computed. [2020-07-20 11:52:40,822 INFO L268 CegarLoopResult]: For program point L22(lines 22 394) no Hoare annotation was computed. [2020-07-20 11:52:40,822 INFO L268 CegarLoopResult]: For program point L80(lines 80 90) no Hoare annotation was computed. [2020-07-20 11:52:40,822 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 186) no Hoare annotation was computed. [2020-07-20 11:52:40,822 INFO L268 CegarLoopResult]: For program point L138(lines 138 160) no Hoare annotation was computed. [2020-07-20 11:52:40,822 INFO L268 CegarLoopResult]: For program point L295(line 295) no Hoare annotation was computed. [2020-07-20 11:52:40,822 INFO L268 CegarLoopResult]: For program point mainErr16ASSERT_VIOLATIONERROR_FUNCTION(line 364) no Hoare annotation was computed. [2020-07-20 11:52:40,822 INFO L268 CegarLoopResult]: For program point L122(lines 122 199) no Hoare annotation was computed. [2020-07-20 11:52:40,822 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 174) no Hoare annotation was computed. [2020-07-20 11:52:40,822 INFO L271 CegarLoopResult]: At program point L312(lines 30 393) the Hoare annotation is: true [2020-07-20 11:52:40,823 INFO L268 CegarLoopResult]: For program point L213(lines 213 248) no Hoare annotation was computed. [2020-07-20 11:52:40,823 INFO L268 CegarLoopResult]: For program point L48(lines 48 251) no Hoare annotation was computed. [2020-07-20 11:52:40,823 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 343) no Hoare annotation was computed. [2020-07-20 11:52:40,823 INFO L268 CegarLoopResult]: For program point L172(lines 172 196) no Hoare annotation was computed. [2020-07-20 11:52:40,823 INFO L268 CegarLoopResult]: For program point L362(lines 362 385) no Hoare annotation was computed. [2020-07-20 11:52:40,823 INFO L268 CegarLoopResult]: For program point L329(lines 329 352) no Hoare annotation was computed. [2020-07-20 11:52:40,823 INFO L268 CegarLoopResult]: For program point L263(lines 263 391) no Hoare annotation was computed. [2020-07-20 11:52:40,823 INFO L268 CegarLoopResult]: For program point L131(lines 131 198) no Hoare annotation was computed. [2020-07-20 11:52:40,823 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 82) no Hoare annotation was computed. [2020-07-20 11:52:40,823 INFO L268 CegarLoopResult]: For program point L222(line 222) no Hoare annotation was computed. [2020-07-20 11:52:40,823 INFO L264 CegarLoopResult]: At program point L247(lines 99 249) 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 11:52:40,823 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-20 11:52:40,824 INFO L268 CegarLoopResult]: For program point L305(lines 305 313) no Hoare annotation was computed. [2020-07-20 11:52:40,824 INFO L268 CegarLoopResult]: For program point L140(line 140) no Hoare annotation was computed. [2020-07-20 11:52:40,824 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 234) no Hoare annotation was computed. [2020-07-20 11:52:40,824 INFO L268 CegarLoopResult]: For program point L99(lines 99 249) no Hoare annotation was computed. [2020-07-20 11:52:40,824 INFO L268 CegarLoopResult]: For program point L322(lines 322 387) no Hoare annotation was computed. [2020-07-20 11:52:40,824 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 70) no Hoare annotation was computed. [2020-07-20 11:52:40,824 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-20 11:52:40,824 INFO L268 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2020-07-20 11:52:40,824 INFO L268 CegarLoopResult]: For program point L174(line 174) no Hoare annotation was computed. [2020-07-20 11:52:40,824 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 222) no Hoare annotation was computed. [2020-07-20 11:52:40,824 INFO L268 CegarLoopResult]: For program point L364(line 364) no Hoare annotation was computed. [2020-07-20 11:52:40,824 INFO L268 CegarLoopResult]: For program point L331(line 331) no Hoare annotation was computed. [2020-07-20 11:52:40,824 INFO L268 CegarLoopResult]: For program point L232(lines 232 240) no Hoare annotation was computed. [2020-07-20 11:52:40,825 INFO L268 CegarLoopResult]: For program point mainErr17ASSERT_VIOLATIONERROR_FUNCTION(line 376) no Hoare annotation was computed. [2020-07-20 11:52:40,825 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 124) no Hoare annotation was computed. [2020-07-20 11:52:40,825 INFO L268 CegarLoopResult]: For program point L150(lines 150 158) no Hoare annotation was computed. [2020-07-20 11:52:40,825 INFO L268 CegarLoopResult]: For program point L307(line 307) no Hoare annotation was computed. [2020-07-20 11:52:40,825 INFO L268 CegarLoopResult]: For program point L18(lines 18 399) no Hoare annotation was computed. [2020-07-20 11:52:40,825 INFO L268 CegarLoopResult]: For program point L274(lines 274 389) no Hoare annotation was computed. [2020-07-20 11:52:40,825 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 295) no Hoare annotation was computed. [2020-07-20 11:52:40,825 INFO L268 CegarLoopResult]: For program point L68(lines 68 92) no Hoare annotation was computed. [2020-07-20 11:52:40,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:52:40 BoogieIcfgContainer [2020-07-20 11:52:40,842 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:52:40,844 INFO L168 Benchmark]: Toolchain (without parser) took 16475.55 ms. Allocated memory was 138.9 MB in the beginning and 324.0 MB in the end (delta: 185.1 MB). Free memory was 103.6 MB in the beginning and 226.6 MB in the end (delta: -123.0 MB). Peak memory consumption was 177.7 MB. Max. memory is 7.1 GB. [2020-07-20 11:52:40,844 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 11:52:40,845 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.89 ms. Allocated memory is still 138.9 MB. Free memory was 103.4 MB in the beginning and 90.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:52:40,845 INFO L168 Benchmark]: Boogie Preprocessor took 128.12 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 90.4 MB in the beginning and 179.8 MB in the end (delta: -89.4 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-07-20 11:52:40,846 INFO L168 Benchmark]: RCFGBuilder took 470.66 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 153.9 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:52:40,846 INFO L168 Benchmark]: TraceAbstraction took 15535.84 ms. Allocated memory was 202.4 MB in the beginning and 324.0 MB in the end (delta: 121.6 MB). Free memory was 153.2 MB in the beginning and 226.6 MB in the end (delta: -73.4 MB). Peak memory consumption was 163.8 MB. Max. memory is 7.1 GB. [2020-07-20 11:52:40,849 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 334.89 ms. Allocated memory is still 138.9 MB. Free memory was 103.4 MB in the beginning and 90.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.12 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 90.4 MB in the beginning and 179.8 MB in the end (delta: -89.4 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 470.66 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 153.9 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15535.84 ms. Allocated memory was 202.4 MB in the beginning and 324.0 MB in the end (delta: 121.6 MB). Free memory was 153.2 MB in the beginning and 226.6 MB in the end (delta: -73.4 MB). Peak memory consumption was 163.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 343]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 364]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 174]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 186]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 307]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 222]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 234]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 331]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 295]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 124]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 276]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 376]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 82]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 152]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 140]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 112]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 70]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: main__t <= main__tagbuf_len && 1 <= main__t - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: (main__t <= main__tagbuf_len && 1 <= main__t) && !(main__tagbuf_len == main__t) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((((main__t < main__tagbuf_len && 1 <= __VERIFIER_assert__cond) && 1 <= main__t) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) || (((0 <= main__t && main__t <= 0) && 0 <= main__tagbuf_len) && !(main__tagbuf_len == main__t))) || (((((main__t <= main__tagbuf_len && 1 <= main__t) && main__t <= 1) && 1 <= __VERIFIER_assert__cond) && !(main__tagbuf_len == main__t)) && 1 <= __VERIFIER_assert__cond) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 280]: Loop Invariant Derived loop invariant: ((((0 <= main__t && main__t <= 0) && 0 <= main__tagbuf_len) && !(main__tagbuf_len == main__t)) && 1 <= __VERIFIER_assert__cond) || (((main__t < main__tagbuf_len && 0 <= main__t) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 84 locations, 18 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.2s, OverallIterations: 27, TraceHistogramMax: 2, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1195 SDtfs, 2755 SDslu, 2153 SDs, 0 SdLazy, 2615 SolverSat, 316 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 686 GetRequests, 478 SyntacticMatches, 19 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 27 MinimizatonAttempts, 701 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 36 NumberOfFragments, 105 HoareAnnotationTreeSize, 9 FomulaSimplifications, 21018096870 FormulaSimplificationTreeSizeReduction, 0.8s HoareSimplificationTime, 9 FomulaSimplificationsInter, 3395599415 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 524 NumberOfCodeBlocks, 524 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 621 ConstructedInterpolants, 0 QuantifiedInterpolants, 64665 SizeOfPredicates, 105 NumberOfNonLiveVariables, 2822 ConjunctsInSsa, 205 ConjunctsInUnsatCore, 32 InterpolantComputations, 22 PerfectInterpolantSequences, 12/48 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...