/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 11:42:33,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:42:33,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:42:33,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:42:33,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:42:33,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:42:33,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:42:33,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:42:33,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:42:33,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:42:33,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:42:33,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:42:33,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:42:33,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:42:33,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:42:33,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:42:33,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:42:33,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:42:33,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:42:33,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:42:33,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:42:33,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:42:33,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:42:33,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:42:33,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 11:42:33,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:42:33,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:42:33,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:42:33,102 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 11:42:33,117 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:42:33,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:42:33,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:42:33,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:42:33,119 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:42:33,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:42:33,119 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:42:33,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:42:33,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:42:33,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:42:33,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:42:33,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:42:33,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:42:33,120 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:42:33,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:42:33,121 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:42:33,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:42:33,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:42:33,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:42:33,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:42:33,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:42:33,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:42:33,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:42:33,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:42:33,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:42:33,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:42:33,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:33,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:42:33,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:42:33,123 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 [2020-07-21 11:42:33,401 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:42:33,414 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:42:33,417 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:42:33,419 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:42:33,419 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:42:33,420 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-07-21 11:42:33,478 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d70237003/15b59f6f52de4abdacb1f073d352778b/FLAG2b0b3a107 [2020-07-21 11:42:34,014 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:42:34,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-07-21 11:42:34,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d70237003/15b59f6f52de4abdacb1f073d352778b/FLAG2b0b3a107 [2020-07-21 11:42:34,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d70237003/15b59f6f52de4abdacb1f073d352778b [2020-07-21 11:42:34,348 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:42:34,352 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:42:34,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:42:34,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:42:34,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:42:34,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:42:34" (1/1) ... [2020-07-21 11:42:34,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ede25e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:42:34, skipping insertion in model container [2020-07-21 11:42:34,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:42:34" (1/1) ... [2020-07-21 11:42:34,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:42:34,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:42:34,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:42:34,707 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:42:34,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:42:34,893 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:42:34,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:42:34 WrapperNode [2020-07-21 11:42:34,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:42:34,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:42:34,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:42:34,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:42:34,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:42:34" (1/1) ... [2020-07-21 11:42:34,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:42:34" (1/1) ... [2020-07-21 11:42:34,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:42:34" (1/1) ... [2020-07-21 11:42:34,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:42:34" (1/1) ... [2020-07-21 11:42:34,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:42:34" (1/1) ... [2020-07-21 11:42:34,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:42:34" (1/1) ... [2020-07-21 11:42:34,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:42:34" (1/1) ... [2020-07-21 11:42:34,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:42:34,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:42:34,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:42:34,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:42:34,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:42:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:42:35,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:42:35,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:42:35,017 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 11:42:35,017 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:42:35,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:42:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 11:42:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 11:42:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 11:42:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 11:42:35,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:42:35,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:42:35,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:42:35,730 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:42:35,731 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 11:42:35,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:42:35 BoogieIcfgContainer [2020-07-21 11:42:35,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:42:35,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:42:35,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:42:35,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:42:35,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:42:34" (1/3) ... [2020-07-21 11:42:35,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17289ac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:42:35, skipping insertion in model container [2020-07-21 11:42:35,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:42:34" (2/3) ... [2020-07-21 11:42:35,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17289ac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:42:35, skipping insertion in model container [2020-07-21 11:42:35,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:42:35" (3/3) ... [2020-07-21 11:42:35,745 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.p+lhb-reducer.c [2020-07-21 11:42:35,756 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:42:35,763 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-07-21 11:42:35,777 INFO L251 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-07-21 11:42:35,803 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:42:35,803 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:42:35,803 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:42:35,803 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:42:35,804 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:42:35,804 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:42:35,804 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:42:35,804 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:42:35,828 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2020-07-21 11:42:35,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-21 11:42:35,835 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:35,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:35,837 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:35,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:35,843 INFO L82 PathProgramCache]: Analyzing trace with hash 692755954, now seen corresponding path program 1 times [2020-07-21 11:42:35,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:35,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992891600] [2020-07-21 11:42:35,852 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 [2020-07-21 11:42:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:35,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:42:35,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:36,004 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:36,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:36,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:36,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992891600] [2020-07-21 11:42:36,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:36,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:42:36,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276296083] [2020-07-21 11:42:36,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:42:36,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:36,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:42:36,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:42:36,053 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 4 states. [2020-07-21 11:42:36,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:36,369 INFO L93 Difference]: Finished difference Result 135 states and 211 transitions. [2020-07-21 11:42:36,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 11:42:36,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-07-21 11:42:36,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:36,385 INFO L225 Difference]: With dead ends: 135 [2020-07-21 11:42:36,385 INFO L226 Difference]: Without dead ends: 118 [2020-07-21 11:42:36,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:42:36,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-07-21 11:42:36,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-07-21 11:42:36,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-07-21 11:42:36,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 139 transitions. [2020-07-21 11:42:36,444 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 139 transitions. Word has length 11 [2020-07-21 11:42:36,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:36,444 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 139 transitions. [2020-07-21 11:42:36,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:42:36,444 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 139 transitions. [2020-07-21 11:42:36,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 11:42:36,445 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:36,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:36,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:36,659 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:36,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:36,660 INFO L82 PathProgramCache]: Analyzing trace with hash 601163, now seen corresponding path program 1 times [2020-07-21 11:42:36,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:36,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038865976] [2020-07-21 11:42:36,660 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 [2020-07-21 11:42:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:36,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:42:36,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:36,721 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:36,724 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:36,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:36,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:36,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038865976] [2020-07-21 11:42:36,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:36,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:42:36,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316402137] [2020-07-21 11:42:36,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:42:36,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:36,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:42:36,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:42:36,741 INFO L87 Difference]: Start difference. First operand 118 states and 139 transitions. Second operand 4 states. [2020-07-21 11:42:36,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:36,910 INFO L93 Difference]: Finished difference Result 118 states and 139 transitions. [2020-07-21 11:42:36,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 11:42:36,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-21 11:42:36,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:36,912 INFO L225 Difference]: With dead ends: 118 [2020-07-21 11:42:36,912 INFO L226 Difference]: Without dead ends: 113 [2020-07-21 11:42:36,913 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 [2020-07-21 11:42:36,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-07-21 11:42:36,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-07-21 11:42:36,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-07-21 11:42:36,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 125 transitions. [2020-07-21 11:42:36,925 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 125 transitions. Word has length 12 [2020-07-21 11:42:36,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:36,926 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 125 transitions. [2020-07-21 11:42:36,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:42:36,926 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 125 transitions. [2020-07-21 11:42:36,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 11:42:36,927 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:36,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:37,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:37,141 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:37,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:37,142 INFO L82 PathProgramCache]: Analyzing trace with hash -438066310, now seen corresponding path program 1 times [2020-07-21 11:42:37,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:37,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813019538] [2020-07-21 11:42:37,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:37,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:42:37,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:37,230 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:37,232 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:37,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:37,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:37,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813019538] [2020-07-21 11:42:37,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:37,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:42:37,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830694993] [2020-07-21 11:42:37,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:42:37,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:37,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:42:37,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:42:37,243 INFO L87 Difference]: Start difference. First operand 113 states and 125 transitions. Second operand 5 states. [2020-07-21 11:42:37,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:37,490 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2020-07-21 11:42:37,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:42:37,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-07-21 11:42:37,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:37,493 INFO L225 Difference]: With dead ends: 113 [2020-07-21 11:42:37,494 INFO L226 Difference]: Without dead ends: 111 [2020-07-21 11:42:37,495 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 [2020-07-21 11:42:37,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-07-21 11:42:37,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-07-21 11:42:37,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-07-21 11:42:37,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2020-07-21 11:42:37,505 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 15 [2020-07-21 11:42:37,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:37,506 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2020-07-21 11:42:37,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:42:37,506 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2020-07-21 11:42:37,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 11:42:37,507 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:37,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:37,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:37,723 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:37,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:37,724 INFO L82 PathProgramCache]: Analyzing trace with hash -695150622, now seen corresponding path program 1 times [2020-07-21 11:42:37,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:37,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601459565] [2020-07-21 11:42:37,726 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 [2020-07-21 11:42:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:37,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:42:37,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:37,802 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:37,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:37,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601459565] [2020-07-21 11:42:37,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:37,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:42:37,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561910869] [2020-07-21 11:42:37,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:42:37,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:37,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:42:37,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:42:37,813 INFO L87 Difference]: Start difference. First operand 111 states and 123 transitions. Second operand 4 states. [2020-07-21 11:42:37,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:37,976 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2020-07-21 11:42:37,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 11:42:37,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-07-21 11:42:37,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:37,978 INFO L225 Difference]: With dead ends: 111 [2020-07-21 11:42:37,978 INFO L226 Difference]: Without dead ends: 107 [2020-07-21 11:42:37,979 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 [2020-07-21 11:42:37,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-07-21 11:42:37,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-07-21 11:42:37,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-07-21 11:42:37,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 119 transitions. [2020-07-21 11:42:37,993 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 119 transitions. Word has length 16 [2020-07-21 11:42:37,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:37,994 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 119 transitions. [2020-07-21 11:42:37,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:42:37,996 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 119 transitions. [2020-07-21 11:42:37,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 11:42:37,997 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:37,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:38,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:38,201 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:38,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:38,202 INFO L82 PathProgramCache]: Analyzing trace with hash -61564757, now seen corresponding path program 1 times [2020-07-21 11:42:38,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:38,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090097748] [2020-07-21 11:42:38,203 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 [2020-07-21 11:42:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:38,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:42:38,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:38,274 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:38,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:38,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:38,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090097748] [2020-07-21 11:42:38,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:38,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:42:38,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896136536] [2020-07-21 11:42:38,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:42:38,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:38,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:42:38,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:42:38,288 INFO L87 Difference]: Start difference. First operand 107 states and 119 transitions. Second operand 5 states. [2020-07-21 11:42:38,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:38,496 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2020-07-21 11:42:38,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:42:38,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-21 11:42:38,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:38,498 INFO L225 Difference]: With dead ends: 125 [2020-07-21 11:42:38,498 INFO L226 Difference]: Without dead ends: 123 [2020-07-21 11:42:38,499 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 [2020-07-21 11:42:38,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-07-21 11:42:38,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 105. [2020-07-21 11:42:38,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-07-21 11:42:38,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2020-07-21 11:42:38,522 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 17 [2020-07-21 11:42:38,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:38,523 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2020-07-21 11:42:38,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:42:38,523 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2020-07-21 11:42:38,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 11:42:38,524 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:38,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:38,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:38,725 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:38,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:38,726 INFO L82 PathProgramCache]: Analyzing trace with hash -60025557, now seen corresponding path program 1 times [2020-07-21 11:42:38,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:38,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552268942] [2020-07-21 11:42:38,728 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 [2020-07-21 11:42:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:38,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:42:38,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:38,801 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:38,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:38,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:38,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552268942] [2020-07-21 11:42:38,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:38,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:42:38,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235857370] [2020-07-21 11:42:38,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:42:38,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:38,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:42:38,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:42:38,816 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand 5 states. [2020-07-21 11:42:38,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:38,989 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2020-07-21 11:42:38,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:42:38,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-21 11:42:38,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:38,991 INFO L225 Difference]: With dead ends: 105 [2020-07-21 11:42:38,992 INFO L226 Difference]: Without dead ends: 103 [2020-07-21 11:42:38,993 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 [2020-07-21 11:42:38,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-07-21 11:42:39,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-07-21 11:42:39,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-07-21 11:42:39,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions. [2020-07-21 11:42:39,007 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 17 [2020-07-21 11:42:39,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:39,010 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions. [2020-07-21 11:42:39,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:42:39,010 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions. [2020-07-21 11:42:39,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 11:42:39,011 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:39,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:39,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:39,228 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:39,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:39,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1907138927, now seen corresponding path program 1 times [2020-07-21 11:42:39,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:39,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5481239] [2020-07-21 11:42:39,230 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 [2020-07-21 11:42:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:39,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:42:39,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:39,292 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:39,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:39,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5481239] [2020-07-21 11:42:39,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:39,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:42:39,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275587798] [2020-07-21 11:42:39,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:42:39,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:39,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:42:39,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:42:39,306 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand 5 states. [2020-07-21 11:42:39,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:39,499 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2020-07-21 11:42:39,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:42:39,499 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-21 11:42:39,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:39,501 INFO L225 Difference]: With dead ends: 124 [2020-07-21 11:42:39,502 INFO L226 Difference]: Without dead ends: 122 [2020-07-21 11:42:39,503 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 [2020-07-21 11:42:39,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-21 11:42:39,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 101. [2020-07-21 11:42:39,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-07-21 11:42:39,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2020-07-21 11:42:39,508 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 18 [2020-07-21 11:42:39,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:39,508 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2020-07-21 11:42:39,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:42:39,508 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2020-07-21 11:42:39,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 11:42:39,509 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:39,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:39,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:39,722 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:39,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:39,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1908504347, now seen corresponding path program 1 times [2020-07-21 11:42:39,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:39,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697984515] [2020-07-21 11:42:39,725 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 [2020-07-21 11:42:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:39,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 11:42:39,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:39,837 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:39,839 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:39,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:39,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:39,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697984515] [2020-07-21 11:42:39,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:39,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 11:42:39,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821361956] [2020-07-21 11:42:39,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:42:39,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:39,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:42:39,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:42:39,850 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 6 states. [2020-07-21 11:42:40,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:40,081 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2020-07-21 11:42:40,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 11:42:40,083 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-21 11:42:40,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:40,084 INFO L225 Difference]: With dead ends: 141 [2020-07-21 11:42:40,084 INFO L226 Difference]: Without dead ends: 139 [2020-07-21 11:42:40,084 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 [2020-07-21 11:42:40,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-07-21 11:42:40,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 107. [2020-07-21 11:42:40,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-07-21 11:42:40,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2020-07-21 11:42:40,091 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 18 [2020-07-21 11:42:40,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:40,091 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2020-07-21 11:42:40,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:42:40,091 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2020-07-21 11:42:40,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 11:42:40,092 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:40,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:40,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:40,298 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:40,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:40,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1860789097, now seen corresponding path program 1 times [2020-07-21 11:42:40,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:40,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167982993] [2020-07-21 11:42:40,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:40,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 11:42:40,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:40,399 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:40,401 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:40,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:40,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:40,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167982993] [2020-07-21 11:42:40,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:40,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 11:42:40,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144515550] [2020-07-21 11:42:40,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:42:40,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:40,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:42:40,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:42:40,413 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand 6 states. [2020-07-21 11:42:40,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:40,569 INFO L93 Difference]: Finished difference Result 117 states and 131 transitions. [2020-07-21 11:42:40,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:42:40,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-21 11:42:40,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:40,570 INFO L225 Difference]: With dead ends: 117 [2020-07-21 11:42:40,571 INFO L226 Difference]: Without dead ends: 113 [2020-07-21 11:42:40,571 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 [2020-07-21 11:42:40,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-07-21 11:42:40,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 108. [2020-07-21 11:42:40,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-07-21 11:42:40,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 122 transitions. [2020-07-21 11:42:40,577 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 122 transitions. Word has length 18 [2020-07-21 11:42:40,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:40,577 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 122 transitions. [2020-07-21 11:42:40,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:42:40,578 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 122 transitions. [2020-07-21 11:42:40,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 11:42:40,581 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:40,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:40,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:40,793 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:40,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:40,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1008238558, now seen corresponding path program 1 times [2020-07-21 11:42:40,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:40,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5639286] [2020-07-21 11:42:40,795 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 [2020-07-21 11:42:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:40,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 11:42:40,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:40,894 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:40,900 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:40,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:40,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:40,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5639286] [2020-07-21 11:42:40,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:40,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 11:42:40,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035551817] [2020-07-21 11:42:40,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:42:40,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:40,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:42:40,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:42:40,913 INFO L87 Difference]: Start difference. First operand 108 states and 122 transitions. Second operand 6 states. [2020-07-21 11:42:41,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:41,095 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2020-07-21 11:42:41,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 11:42:41,095 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-07-21 11:42:41,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:41,097 INFO L225 Difference]: With dead ends: 135 [2020-07-21 11:42:41,097 INFO L226 Difference]: Without dead ends: 133 [2020-07-21 11:42:41,098 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 [2020-07-21 11:42:41,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-07-21 11:42:41,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 111. [2020-07-21 11:42:41,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-07-21 11:42:41,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2020-07-21 11:42:41,102 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 19 [2020-07-21 11:42:41,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:41,103 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2020-07-21 11:42:41,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:42:41,103 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2020-07-21 11:42:41,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-21 11:42:41,104 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:41,104 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] [2020-07-21 11:42:41,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:41,305 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:41,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:41,305 INFO L82 PathProgramCache]: Analyzing trace with hash -121545016, now seen corresponding path program 1 times [2020-07-21 11:42:41,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:41,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779841302] [2020-07-21 11:42:41,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:41,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 11:42:41,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:41,374 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:41,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:41,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:41,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779841302] [2020-07-21 11:42:41,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:41,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 11:42:41,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220070722] [2020-07-21 11:42:41,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:42:41,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:41,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:42:41,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:42:41,384 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand 6 states. [2020-07-21 11:42:41,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:41,576 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2020-07-21 11:42:41,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:42:41,578 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-07-21 11:42:41,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:41,579 INFO L225 Difference]: With dead ends: 111 [2020-07-21 11:42:41,579 INFO L226 Difference]: Without dead ends: 109 [2020-07-21 11:42:41,580 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 [2020-07-21 11:42:41,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-21 11:42:41,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-07-21 11:42:41,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-07-21 11:42:41,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 123 transitions. [2020-07-21 11:42:41,592 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 123 transitions. Word has length 20 [2020-07-21 11:42:41,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:41,592 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 123 transitions. [2020-07-21 11:42:41,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:42:41,592 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 123 transitions. [2020-07-21 11:42:41,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 11:42:41,596 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:41,597 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] [2020-07-21 11:42:41,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:41,798 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:41,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:41,798 INFO L82 PathProgramCache]: Analyzing trace with hash 527074935, now seen corresponding path program 1 times [2020-07-21 11:42:41,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:41,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974844573] [2020-07-21 11:42:41,799 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 [2020-07-21 11:42:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:41,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:42:41,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:41,862 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:41,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:41,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:41,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974844573] [2020-07-21 11:42:41,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:41,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:42:41,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411194416] [2020-07-21 11:42:41,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:42:41,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:41,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:42:41,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:42:41,871 INFO L87 Difference]: Start difference. First operand 109 states and 123 transitions. Second operand 4 states. [2020-07-21 11:42:41,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:41,981 INFO L93 Difference]: Finished difference Result 109 states and 123 transitions. [2020-07-21 11:42:41,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 11:42:41,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-07-21 11:42:41,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:41,984 INFO L225 Difference]: With dead ends: 109 [2020-07-21 11:42:41,984 INFO L226 Difference]: Without dead ends: 105 [2020-07-21 11:42:41,985 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 [2020-07-21 11:42:41,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-07-21 11:42:41,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-07-21 11:42:41,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-07-21 11:42:41,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2020-07-21 11:42:41,989 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 21 [2020-07-21 11:42:41,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:41,990 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2020-07-21 11:42:41,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:42:41,990 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2020-07-21 11:42:41,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 11:42:41,991 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:41,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:42,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:42,203 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:42,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:42,204 INFO L82 PathProgramCache]: Analyzing trace with hash -827305924, now seen corresponding path program 1 times [2020-07-21 11:42:42,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:42,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750000684] [2020-07-21 11:42:42,205 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 [2020-07-21 11:42:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:42,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 11:42:42,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:42,341 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:42,346 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:42,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:42,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:42,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750000684] [2020-07-21 11:42:42,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:42,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 11:42:42,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565491202] [2020-07-21 11:42:42,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 11:42:42,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:42,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 11:42:42,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 11:42:42,363 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand 8 states. [2020-07-21 11:42:42,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:42,663 INFO L93 Difference]: Finished difference Result 155 states and 175 transitions. [2020-07-21 11:42:42,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 11:42:42,665 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-07-21 11:42:42,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:42,666 INFO L225 Difference]: With dead ends: 155 [2020-07-21 11:42:42,667 INFO L226 Difference]: Without dead ends: 153 [2020-07-21 11:42:42,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 11:42:42,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-07-21 11:42:42,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 114. [2020-07-21 11:42:42,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-07-21 11:42:42,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-07-21 11:42:42,673 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 22 [2020-07-21 11:42:42,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:42,673 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-07-21 11:42:42,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 11:42:42,673 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-07-21 11:42:42,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 11:42:42,674 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:42,674 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] [2020-07-21 11:42:42,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:42,885 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:42,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:42,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1668757445, now seen corresponding path program 1 times [2020-07-21 11:42:42,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:42,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900833468] [2020-07-21 11:42:42,887 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 [2020-07-21 11:42:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:42,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 11:42:42,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:43,010 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:43,011 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:43,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:43,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:43,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900833468] [2020-07-21 11:42:43,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:43,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 11:42:43,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117634179] [2020-07-21 11:42:43,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 11:42:43,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:43,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 11:42:43,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 11:42:43,021 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 8 states. [2020-07-21 11:42:43,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:43,227 INFO L93 Difference]: Finished difference Result 141 states and 159 transitions. [2020-07-21 11:42:43,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 11:42:43,227 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-07-21 11:42:43,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:43,229 INFO L225 Difference]: With dead ends: 141 [2020-07-21 11:42:43,229 INFO L226 Difference]: Without dead ends: 139 [2020-07-21 11:42:43,229 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 [2020-07-21 11:42:43,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-07-21 11:42:43,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 116. [2020-07-21 11:42:43,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-07-21 11:42:43,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 133 transitions. [2020-07-21 11:42:43,235 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 133 transitions. Word has length 22 [2020-07-21 11:42:43,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:43,235 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 133 transitions. [2020-07-21 11:42:43,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 11:42:43,235 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 133 transitions. [2020-07-21 11:42:43,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 11:42:43,236 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:43,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:43,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:43,442 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:43,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:43,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1621042195, now seen corresponding path program 1 times [2020-07-21 11:42:43,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:43,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928201566] [2020-07-21 11:42:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-07-21 11:42:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:43,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 11:42:43,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:43,557 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:43,559 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:43,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:43,570 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:43,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928201566] [2020-07-21 11:42:43,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:43,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 11:42:43,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312258763] [2020-07-21 11:42:43,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 11:42:43,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:43,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 11:42:43,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 11:42:43,576 INFO L87 Difference]: Start difference. First operand 116 states and 133 transitions. Second operand 8 states. [2020-07-21 11:42:43,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:43,753 INFO L93 Difference]: Finished difference Result 120 states and 136 transitions. [2020-07-21 11:42:43,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 11:42:43,753 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-07-21 11:42:43,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:43,754 INFO L225 Difference]: With dead ends: 120 [2020-07-21 11:42:43,754 INFO L226 Difference]: Without dead ends: 116 [2020-07-21 11:42:43,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-07-21 11:42:43,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-07-21 11:42:43,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-07-21 11:42:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-07-21 11:42:43,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 132 transitions. [2020-07-21 11:42:43,759 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 132 transitions. Word has length 22 [2020-07-21 11:42:43,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:43,760 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 132 transitions. [2020-07-21 11:42:43,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 11:42:43,760 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 132 transitions. [2020-07-21 11:42:43,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 11:42:43,761 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:43,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:43,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:43,969 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:43,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:43,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1584270570, now seen corresponding path program 1 times [2020-07-21 11:42:43,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:43,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973846064] [2020-07-21 11:42:43,971 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 [2020-07-21 11:42:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:44,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-21 11:42:44,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:44,129 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:44,131 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:44,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:44,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:44,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973846064] [2020-07-21 11:42:44,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:44,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-21 11:42:44,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929948708] [2020-07-21 11:42:44,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 11:42:44,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:44,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 11:42:44,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-07-21 11:42:44,146 INFO L87 Difference]: Start difference. First operand 116 states and 132 transitions. Second operand 10 states. [2020-07-21 11:42:44,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:44,446 INFO L93 Difference]: Finished difference Result 169 states and 191 transitions. [2020-07-21 11:42:44,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-21 11:42:44,447 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-07-21 11:42:44,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:44,449 INFO L225 Difference]: With dead ends: 169 [2020-07-21 11:42:44,449 INFO L226 Difference]: Without dead ends: 167 [2020-07-21 11:42:44,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-07-21 11:42:44,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-07-21 11:42:44,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 120. [2020-07-21 11:42:44,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-21 11:42:44,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 138 transitions. [2020-07-21 11:42:44,456 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 138 transitions. Word has length 26 [2020-07-21 11:42:44,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:44,456 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 138 transitions. [2020-07-21 11:42:44,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 11:42:44,456 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 138 transitions. [2020-07-21 11:42:44,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 11:42:44,457 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:44,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:44,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:44,673 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:44,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:44,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1631985820, now seen corresponding path program 1 times [2020-07-21 11:42:44,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:44,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107210557] [2020-07-21 11:42:44,675 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 [2020-07-21 11:42:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:44,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-21 11:42:44,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:44,827 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:44,828 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:44,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:44,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:44,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107210557] [2020-07-21 11:42:44,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:44,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-21 11:42:44,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090049158] [2020-07-21 11:42:44,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 11:42:44,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:44,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 11:42:44,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-07-21 11:42:44,843 INFO L87 Difference]: Start difference. First operand 120 states and 138 transitions. Second operand 10 states. [2020-07-21 11:42:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:45,152 INFO L93 Difference]: Finished difference Result 133 states and 151 transitions. [2020-07-21 11:42:45,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 11:42:45,153 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-07-21 11:42:45,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:45,154 INFO L225 Difference]: With dead ends: 133 [2020-07-21 11:42:45,154 INFO L226 Difference]: Without dead ends: 129 [2020-07-21 11:42:45,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-07-21 11:42:45,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-07-21 11:42:45,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 121. [2020-07-21 11:42:45,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-07-21 11:42:45,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2020-07-21 11:42:45,161 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 26 [2020-07-21 11:42:45,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:45,161 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2020-07-21 11:42:45,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 11:42:45,161 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2020-07-21 11:42:45,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 11:42:45,162 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:45,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:45,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:45,376 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:45,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:45,377 INFO L82 PathProgramCache]: Analyzing trace with hash 612299922, now seen corresponding path program 1 times [2020-07-21 11:42:45,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:45,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009367889] [2020-07-21 11:42:45,378 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 [2020-07-21 11:42:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:45,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-21 11:42:45,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:45,531 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:45,532 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:45,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:45,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009367889] [2020-07-21 11:42:45,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:45,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-21 11:42:45,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270578554] [2020-07-21 11:42:45,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 11:42:45,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:45,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 11:42:45,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-07-21 11:42:45,548 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand 10 states. [2020-07-21 11:42:46,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:46,001 INFO L93 Difference]: Finished difference Result 164 states and 188 transitions. [2020-07-21 11:42:46,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-21 11:42:46,001 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-07-21 11:42:46,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:46,003 INFO L225 Difference]: With dead ends: 164 [2020-07-21 11:42:46,003 INFO L226 Difference]: Without dead ends: 162 [2020-07-21 11:42:46,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-07-21 11:42:46,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-07-21 11:42:46,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 127. [2020-07-21 11:42:46,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-07-21 11:42:46,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 145 transitions. [2020-07-21 11:42:46,009 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 145 transitions. Word has length 26 [2020-07-21 11:42:46,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:46,009 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 145 transitions. [2020-07-21 11:42:46,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 11:42:46,010 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 145 transitions. [2020-07-21 11:42:46,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 11:42:46,010 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:46,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:46,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:46,222 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:46,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:46,223 INFO L82 PathProgramCache]: Analyzing trace with hash 868501953, now seen corresponding path program 1 times [2020-07-21 11:42:46,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:46,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122133789] [2020-07-21 11:42:46,223 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 [2020-07-21 11:42:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:46,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 11:42:46,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:46,416 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:46,417 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:46,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:46,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:46,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122133789] [2020-07-21 11:42:46,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:46,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-21 11:42:46,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251661003] [2020-07-21 11:42:46,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 11:42:46,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:46,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 11:42:46,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-07-21 11:42:46,428 INFO L87 Difference]: Start difference. First operand 127 states and 145 transitions. Second operand 12 states. [2020-07-21 11:42:46,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:46,887 INFO L93 Difference]: Finished difference Result 197 states and 225 transitions. [2020-07-21 11:42:46,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-21 11:42:46,888 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-07-21 11:42:46,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:46,890 INFO L225 Difference]: With dead ends: 197 [2020-07-21 11:42:46,890 INFO L226 Difference]: Without dead ends: 195 [2020-07-21 11:42:46,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2020-07-21 11:42:46,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-07-21 11:42:46,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 136. [2020-07-21 11:42:46,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-07-21 11:42:46,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 157 transitions. [2020-07-21 11:42:46,898 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 157 transitions. Word has length 30 [2020-07-21 11:42:46,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:46,898 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 157 transitions. [2020-07-21 11:42:46,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 11:42:46,898 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 157 transitions. [2020-07-21 11:42:46,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 11:42:46,899 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:46,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:47,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:47,106 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:47,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:47,107 INFO L82 PathProgramCache]: Analyzing trace with hash -130753639, now seen corresponding path program 1 times [2020-07-21 11:42:47,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:47,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863505362] [2020-07-21 11:42:47,108 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 [2020-07-21 11:42:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:47,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 11:42:47,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:47,301 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:47,303 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:47,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:47,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:47,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863505362] [2020-07-21 11:42:47,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:47,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-21 11:42:47,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491073834] [2020-07-21 11:42:47,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 11:42:47,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:47,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 11:42:47,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-07-21 11:42:47,318 INFO L87 Difference]: Start difference. First operand 136 states and 157 transitions. Second operand 12 states. [2020-07-21 11:42:47,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:47,787 INFO L93 Difference]: Finished difference Result 185 states and 211 transitions. [2020-07-21 11:42:47,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-21 11:42:47,788 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-07-21 11:42:47,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:47,789 INFO L225 Difference]: With dead ends: 185 [2020-07-21 11:42:47,789 INFO L226 Difference]: Without dead ends: 183 [2020-07-21 11:42:47,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2020-07-21 11:42:47,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-07-21 11:42:47,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 138. [2020-07-21 11:42:47,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-07-21 11:42:47,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 159 transitions. [2020-07-21 11:42:47,797 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 159 transitions. Word has length 30 [2020-07-21 11:42:47,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:47,797 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 159 transitions. [2020-07-21 11:42:47,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 11:42:47,798 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 159 transitions. [2020-07-21 11:42:47,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 11:42:47,798 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:47,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:48,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:48,011 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:48,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:48,012 INFO L82 PathProgramCache]: Analyzing trace with hash -83038389, now seen corresponding path program 1 times [2020-07-21 11:42:48,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:48,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661195483] [2020-07-21 11:42:48,012 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 [2020-07-21 11:42:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:48,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 11:42:48,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:48,199 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:48,200 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:48,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:48,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:48,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661195483] [2020-07-21 11:42:48,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:48,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-21 11:42:48,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832876926] [2020-07-21 11:42:48,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 11:42:48,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:48,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 11:42:48,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-07-21 11:42:48,212 INFO L87 Difference]: Start difference. First operand 138 states and 159 transitions. Second operand 12 states. [2020-07-21 11:42:48,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:48,444 INFO L93 Difference]: Finished difference Result 142 states and 162 transitions. [2020-07-21 11:42:48,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 11:42:48,445 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-07-21 11:42:48,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:48,446 INFO L225 Difference]: With dead ends: 142 [2020-07-21 11:42:48,446 INFO L226 Difference]: Without dead ends: 138 [2020-07-21 11:42:48,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-07-21 11:42:48,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-07-21 11:42:48,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-07-21 11:42:48,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-07-21 11:42:48,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2020-07-21 11:42:48,453 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 30 [2020-07-21 11:42:48,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:48,453 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2020-07-21 11:42:48,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 11:42:48,453 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2020-07-21 11:42:48,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-21 11:42:48,454 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:48,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:48,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:48,655 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:48,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:48,655 INFO L82 PathProgramCache]: Analyzing trace with hash 705180744, now seen corresponding path program 1 times [2020-07-21 11:42:48,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:48,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568052738] [2020-07-21 11:42:48,656 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 [2020-07-21 11:42:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:48,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 11:42:48,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:48,877 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:48,878 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:48,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:48,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:48,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568052738] [2020-07-21 11:42:48,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:48,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-21 11:42:48,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601603126] [2020-07-21 11:42:48,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 11:42:48,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:48,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 11:42:48,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-07-21 11:42:48,893 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 14 states. [2020-07-21 11:42:49,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:49,434 INFO L93 Difference]: Finished difference Result 209 states and 239 transitions. [2020-07-21 11:42:49,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-21 11:42:49,434 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-07-21 11:42:49,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:49,436 INFO L225 Difference]: With dead ends: 209 [2020-07-21 11:42:49,436 INFO L226 Difference]: Without dead ends: 207 [2020-07-21 11:42:49,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2020-07-21 11:42:49,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-07-21 11:42:49,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 142. [2020-07-21 11:42:49,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-07-21 11:42:49,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 164 transitions. [2020-07-21 11:42:49,444 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 164 transitions. Word has length 34 [2020-07-21 11:42:49,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:49,444 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 164 transitions. [2020-07-21 11:42:49,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 11:42:49,444 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 164 transitions. [2020-07-21 11:42:49,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-21 11:42:49,445 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:49,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:49,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:49,661 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:49,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:49,662 INFO L82 PathProgramCache]: Analyzing trace with hash 752895994, now seen corresponding path program 1 times [2020-07-21 11:42:49,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:49,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884606304] [2020-07-21 11:42:49,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-07-21 11:42:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:49,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 11:42:49,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:49,883 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:49,884 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:49,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:49,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:49,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884606304] [2020-07-21 11:42:49,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:49,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-21 11:42:49,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269775007] [2020-07-21 11:42:49,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 11:42:49,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:49,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 11:42:49,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-07-21 11:42:49,900 INFO L87 Difference]: Start difference. First operand 142 states and 164 transitions. Second operand 14 states. [2020-07-21 11:42:50,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:50,297 INFO L93 Difference]: Finished difference Result 155 states and 177 transitions. [2020-07-21 11:42:50,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-21 11:42:50,298 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-07-21 11:42:50,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:50,299 INFO L225 Difference]: With dead ends: 155 [2020-07-21 11:42:50,299 INFO L226 Difference]: Without dead ends: 151 [2020-07-21 11:42:50,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-07-21 11:42:50,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-07-21 11:42:50,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 143. [2020-07-21 11:42:50,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-07-21 11:42:50,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 165 transitions. [2020-07-21 11:42:50,306 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 165 transitions. Word has length 34 [2020-07-21 11:42:50,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:50,307 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 165 transitions. [2020-07-21 11:42:50,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 11:42:50,307 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 165 transitions. [2020-07-21 11:42:50,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-21 11:42:50,308 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:50,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:50,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:50,508 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:50,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:50,509 INFO L82 PathProgramCache]: Analyzing trace with hash -619304720, now seen corresponding path program 1 times [2020-07-21 11:42:50,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:50,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374563752] [2020-07-21 11:42:50,509 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 [2020-07-21 11:42:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:50,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 11:42:50,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:50,792 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:50,793 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:50,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:50,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374563752] [2020-07-21 11:42:50,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:50,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-21 11:42:50,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347213403] [2020-07-21 11:42:50,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 11:42:50,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:50,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 11:42:50,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-07-21 11:42:50,812 INFO L87 Difference]: Start difference. First operand 143 states and 165 transitions. Second operand 14 states. [2020-07-21 11:42:51,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:51,272 INFO L93 Difference]: Finished difference Result 206 states and 238 transitions. [2020-07-21 11:42:51,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-21 11:42:51,273 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-07-21 11:42:51,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:51,274 INFO L225 Difference]: With dead ends: 206 [2020-07-21 11:42:51,274 INFO L226 Difference]: Without dead ends: 204 [2020-07-21 11:42:51,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2020-07-21 11:42:51,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-07-21 11:42:51,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 149. [2020-07-21 11:42:51,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-07-21 11:42:51,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 171 transitions. [2020-07-21 11:42:51,282 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 171 transitions. Word has length 34 [2020-07-21 11:42:51,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:51,283 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 171 transitions. [2020-07-21 11:42:51,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 11:42:51,283 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 171 transitions. [2020-07-21 11:42:51,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 11:42:51,283 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:51,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:51,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:51,498 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:51,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:51,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1500309769, now seen corresponding path program 1 times [2020-07-21 11:42:51,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:51,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208785892] [2020-07-21 11:42:51,500 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 [2020-07-21 11:42:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:51,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-21 11:42:51,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:51,770 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:51,771 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:51,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:51,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:51,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208785892] [2020-07-21 11:42:51,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:51,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-21 11:42:51,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942096638] [2020-07-21 11:42:51,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-21 11:42:51,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:51,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-21 11:42:51,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2020-07-21 11:42:51,786 INFO L87 Difference]: Start difference. First operand 149 states and 171 transitions. Second operand 16 states. [2020-07-21 11:42:52,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:52,327 INFO L93 Difference]: Finished difference Result 229 states and 263 transitions. [2020-07-21 11:42:52,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-21 11:42:52,328 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2020-07-21 11:42:52,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:52,329 INFO L225 Difference]: With dead ends: 229 [2020-07-21 11:42:52,330 INFO L226 Difference]: Without dead ends: 227 [2020-07-21 11:42:52,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=211, Invalid=439, Unknown=0, NotChecked=0, Total=650 [2020-07-21 11:42:52,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-07-21 11:42:52,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 153. [2020-07-21 11:42:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-07-21 11:42:52,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 177 transitions. [2020-07-21 11:42:52,338 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 177 transitions. Word has length 38 [2020-07-21 11:42:52,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:52,338 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 177 transitions. [2020-07-21 11:42:52,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-21 11:42:52,339 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 177 transitions. [2020-07-21 11:42:52,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 11:42:52,339 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:52,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:52,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:52,555 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:52,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:52,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1452594519, now seen corresponding path program 1 times [2020-07-21 11:42:52,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:52,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325414244] [2020-07-21 11:42:52,556 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 [2020-07-21 11:42:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:52,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-21 11:42:52,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:52,842 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:52,843 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:52,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:52,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:52,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325414244] [2020-07-21 11:42:52,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:52,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-21 11:42:52,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850553795] [2020-07-21 11:42:52,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-21 11:42:52,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:52,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-21 11:42:52,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2020-07-21 11:42:52,860 INFO L87 Difference]: Start difference. First operand 153 states and 177 transitions. Second operand 16 states. [2020-07-21 11:42:53,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:53,208 INFO L93 Difference]: Finished difference Result 166 states and 190 transitions. [2020-07-21 11:42:53,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-21 11:42:53,209 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2020-07-21 11:42:53,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:53,210 INFO L225 Difference]: With dead ends: 166 [2020-07-21 11:42:53,210 INFO L226 Difference]: Without dead ends: 162 [2020-07-21 11:42:53,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-07-21 11:42:53,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-07-21 11:42:53,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 154. [2020-07-21 11:42:53,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-07-21 11:42:53,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 178 transitions. [2020-07-21 11:42:53,217 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 178 transitions. Word has length 38 [2020-07-21 11:42:53,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:53,217 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 178 transitions. [2020-07-21 11:42:53,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-21 11:42:53,217 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 178 transitions. [2020-07-21 11:42:53,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 11:42:53,218 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:53,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:53,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:53,419 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:53,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:53,419 INFO L82 PathProgramCache]: Analyzing trace with hash -853568993, now seen corresponding path program 1 times [2020-07-21 11:42:53,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:53,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381883042] [2020-07-21 11:42:53,420 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 [2020-07-21 11:42:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:53,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-21 11:42:53,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:53,676 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:53,678 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:53,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:53,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:53,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381883042] [2020-07-21 11:42:53,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:53,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-21 11:42:53,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357572746] [2020-07-21 11:42:53,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-21 11:42:53,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:53,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-21 11:42:53,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2020-07-21 11:42:53,690 INFO L87 Difference]: Start difference. First operand 154 states and 178 transitions. Second operand 16 states. [2020-07-21 11:42:54,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:54,342 INFO L93 Difference]: Finished difference Result 227 states and 263 transitions. [2020-07-21 11:42:54,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-21 11:42:54,342 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2020-07-21 11:42:54,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:54,344 INFO L225 Difference]: With dead ends: 227 [2020-07-21 11:42:54,344 INFO L226 Difference]: Without dead ends: 225 [2020-07-21 11:42:54,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=211, Invalid=439, Unknown=0, NotChecked=0, Total=650 [2020-07-21 11:42:54,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-07-21 11:42:54,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 160. [2020-07-21 11:42:54,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-07-21 11:42:54,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 184 transitions. [2020-07-21 11:42:54,352 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 184 transitions. Word has length 38 [2020-07-21 11:42:54,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:54,352 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 184 transitions. [2020-07-21 11:42:54,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-21 11:42:54,353 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 184 transitions. [2020-07-21 11:42:54,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 11:42:54,353 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:54,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:54,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:54,568 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:54,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:54,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1863025998, now seen corresponding path program 1 times [2020-07-21 11:42:54,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:54,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637458438] [2020-07-21 11:42:54,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:54,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-21 11:42:54,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:54,887 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:54,890 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:54,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:54,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637458438] [2020-07-21 11:42:54,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:54,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-07-21 11:42:54,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809901409] [2020-07-21 11:42:54,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-21 11:42:54,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:54,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-21 11:42:54,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2020-07-21 11:42:54,905 INFO L87 Difference]: Start difference. First operand 160 states and 184 transitions. Second operand 18 states. [2020-07-21 11:42:55,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:55,616 INFO L93 Difference]: Finished difference Result 260 states and 300 transitions. [2020-07-21 11:42:55,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-21 11:42:55,616 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 42 [2020-07-21 11:42:55,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:55,618 INFO L225 Difference]: With dead ends: 260 [2020-07-21 11:42:55,618 INFO L226 Difference]: Without dead ends: 258 [2020-07-21 11:42:55,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=592, Unknown=0, NotChecked=0, Total=870 [2020-07-21 11:42:55,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-07-21 11:42:55,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 169. [2020-07-21 11:42:55,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-07-21 11:42:55,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 196 transitions. [2020-07-21 11:42:55,626 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 196 transitions. Word has length 42 [2020-07-21 11:42:55,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:55,626 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 196 transitions. [2020-07-21 11:42:55,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-21 11:42:55,626 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 196 transitions. [2020-07-21 11:42:55,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 11:42:55,627 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:55,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:55,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:55,835 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:55,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:55,835 INFO L82 PathProgramCache]: Analyzing trace with hash -754941018, now seen corresponding path program 1 times [2020-07-21 11:42:55,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:55,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742682244] [2020-07-21 11:42:55,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:55,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-21 11:42:55,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:56,148 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:56,149 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:56,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:56,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:56,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742682244] [2020-07-21 11:42:56,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:56,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-07-21 11:42:56,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992367513] [2020-07-21 11:42:56,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-21 11:42:56,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:56,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-21 11:42:56,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2020-07-21 11:42:56,163 INFO L87 Difference]: Start difference. First operand 169 states and 196 transitions. Second operand 18 states. [2020-07-21 11:42:56,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:56,887 INFO L93 Difference]: Finished difference Result 245 states and 283 transitions. [2020-07-21 11:42:56,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-21 11:42:56,887 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 42 [2020-07-21 11:42:56,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:56,889 INFO L225 Difference]: With dead ends: 245 [2020-07-21 11:42:56,890 INFO L226 Difference]: Without dead ends: 243 [2020-07-21 11:42:56,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=592, Unknown=0, NotChecked=0, Total=870 [2020-07-21 11:42:56,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-07-21 11:42:56,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 171. [2020-07-21 11:42:56,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-07-21 11:42:56,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 198 transitions. [2020-07-21 11:42:56,899 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 198 transitions. Word has length 42 [2020-07-21 11:42:56,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:56,899 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 198 transitions. [2020-07-21 11:42:56,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-21 11:42:56,899 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 198 transitions. [2020-07-21 11:42:56,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 11:42:56,900 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:56,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:57,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:57,114 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:57,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:57,115 INFO L82 PathProgramCache]: Analyzing trace with hash -707225768, now seen corresponding path program 1 times [2020-07-21 11:42:57,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:57,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403521084] [2020-07-21 11:42:57,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:57,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-21 11:42:57,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:57,421 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:57,422 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:57,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:57,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:57,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403521084] [2020-07-21 11:42:57,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:57,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-07-21 11:42:57,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920471880] [2020-07-21 11:42:57,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-21 11:42:57,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:57,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-21 11:42:57,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2020-07-21 11:42:57,438 INFO L87 Difference]: Start difference. First operand 171 states and 198 transitions. Second operand 18 states. [2020-07-21 11:42:57,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:57,868 INFO L93 Difference]: Finished difference Result 175 states and 201 transitions. [2020-07-21 11:42:57,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-21 11:42:57,868 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 42 [2020-07-21 11:42:57,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:57,870 INFO L225 Difference]: With dead ends: 175 [2020-07-21 11:42:57,870 INFO L226 Difference]: Without dead ends: 171 [2020-07-21 11:42:57,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2020-07-21 11:42:57,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-07-21 11:42:57,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-07-21 11:42:57,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-07-21 11:42:57,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 197 transitions. [2020-07-21 11:42:57,878 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 197 transitions. Word has length 42 [2020-07-21 11:42:57,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:57,878 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 197 transitions. [2020-07-21 11:42:57,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-21 11:42:57,879 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 197 transitions. [2020-07-21 11:42:57,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 11:42:57,879 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:57,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:58,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:58,094 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:58,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:58,094 INFO L82 PathProgramCache]: Analyzing trace with hash -2030339499, now seen corresponding path program 1 times [2020-07-21 11:42:58,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:58,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554873723] [2020-07-21 11:42:58,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:58,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-21 11:42:58,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:58,456 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:58,457 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:58,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:58,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:58,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554873723] [2020-07-21 11:42:58,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:58,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-07-21 11:42:58,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242762141] [2020-07-21 11:42:58,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-21 11:42:58,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:58,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-21 11:42:58,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2020-07-21 11:42:58,472 INFO L87 Difference]: Start difference. First operand 171 states and 197 transitions. Second operand 20 states. [2020-07-21 11:42:59,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:42:59,278 INFO L93 Difference]: Finished difference Result 269 states and 311 transitions. [2020-07-21 11:42:59,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-21 11:42:59,279 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 46 [2020-07-21 11:42:59,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:42:59,281 INFO L225 Difference]: With dead ends: 269 [2020-07-21 11:42:59,281 INFO L226 Difference]: Without dead ends: 267 [2020-07-21 11:42:59,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=354, Invalid=768, Unknown=0, NotChecked=0, Total=1122 [2020-07-21 11:42:59,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-07-21 11:42:59,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 175. [2020-07-21 11:42:59,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-07-21 11:42:59,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 203 transitions. [2020-07-21 11:42:59,290 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 203 transitions. Word has length 46 [2020-07-21 11:42:59,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:42:59,291 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 203 transitions. [2020-07-21 11:42:59,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-21 11:42:59,291 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 203 transitions. [2020-07-21 11:42:59,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 11:42:59,291 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:42:59,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:42:59,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:59,496 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:42:59,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:42:59,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1982624249, now seen corresponding path program 1 times [2020-07-21 11:42:59,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:42:59,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795062720] [2020-07-21 11:42:59,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:42:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:42:59,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-21 11:42:59,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:42:59,844 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:42:59,845 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:42:59,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:42:59,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:42:59,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795062720] [2020-07-21 11:42:59,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:42:59,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-07-21 11:42:59,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012355268] [2020-07-21 11:42:59,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-21 11:42:59,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:42:59,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-21 11:42:59,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2020-07-21 11:42:59,861 INFO L87 Difference]: Start difference. First operand 175 states and 203 transitions. Second operand 20 states. [2020-07-21 11:43:00,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:00,361 INFO L93 Difference]: Finished difference Result 188 states and 216 transitions. [2020-07-21 11:43:00,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-21 11:43:00,362 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 46 [2020-07-21 11:43:00,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:00,363 INFO L225 Difference]: With dead ends: 188 [2020-07-21 11:43:00,363 INFO L226 Difference]: Without dead ends: 184 [2020-07-21 11:43:00,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=271, Unknown=0, NotChecked=0, Total=420 [2020-07-21 11:43:00,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-07-21 11:43:00,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 176. [2020-07-21 11:43:00,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-07-21 11:43:00,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 204 transitions. [2020-07-21 11:43:00,374 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 204 transitions. Word has length 46 [2020-07-21 11:43:00,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:00,374 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 204 transitions. [2020-07-21 11:43:00,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-21 11:43:00,375 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 204 transitions. [2020-07-21 11:43:00,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 11:43:00,376 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:00,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:00,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:00,591 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:00,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:00,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1736113539, now seen corresponding path program 1 times [2020-07-21 11:43:00,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:00,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179489091] [2020-07-21 11:43:00,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:00,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-21 11:43:00,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:00,962 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:00,963 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:00,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:00,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:00,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179489091] [2020-07-21 11:43:00,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:00,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-07-21 11:43:00,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349057746] [2020-07-21 11:43:00,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-21 11:43:00,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:00,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-21 11:43:00,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2020-07-21 11:43:00,982 INFO L87 Difference]: Start difference. First operand 176 states and 204 transitions. Second operand 20 states. [2020-07-21 11:43:01,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:01,785 INFO L93 Difference]: Finished difference Result 269 states and 313 transitions. [2020-07-21 11:43:01,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-21 11:43:01,786 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 46 [2020-07-21 11:43:01,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:01,787 INFO L225 Difference]: With dead ends: 269 [2020-07-21 11:43:01,787 INFO L226 Difference]: Without dead ends: 267 [2020-07-21 11:43:01,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=354, Invalid=768, Unknown=0, NotChecked=0, Total=1122 [2020-07-21 11:43:01,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-07-21 11:43:01,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 182. [2020-07-21 11:43:01,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-07-21 11:43:01,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 210 transitions. [2020-07-21 11:43:01,795 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 210 transitions. Word has length 46 [2020-07-21 11:43:01,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:01,796 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 210 transitions. [2020-07-21 11:43:01,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-21 11:43:01,796 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 210 transitions. [2020-07-21 11:43:01,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-21 11:43:01,796 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:01,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:01,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:01,998 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:01,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:01,999 INFO L82 PathProgramCache]: Analyzing trace with hash 2058833109, now seen corresponding path program 1 times [2020-07-21 11:43:01,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:01,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069653187] [2020-07-21 11:43:01,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:02,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 11:43:02,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:02,137 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:02,138 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:02,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:02,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:02,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069653187] [2020-07-21 11:43:02,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:02,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-21 11:43:02,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152557959] [2020-07-21 11:43:02,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-21 11:43:02,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:02,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-21 11:43:02,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-07-21 11:43:02,149 INFO L87 Difference]: Start difference. First operand 182 states and 210 transitions. Second operand 13 states. [2020-07-21 11:43:02,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:02,666 INFO L93 Difference]: Finished difference Result 210 states and 241 transitions. [2020-07-21 11:43:02,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-21 11:43:02,667 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-07-21 11:43:02,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:02,668 INFO L225 Difference]: With dead ends: 210 [2020-07-21 11:43:02,668 INFO L226 Difference]: Without dead ends: 208 [2020-07-21 11:43:02,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-07-21 11:43:02,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-07-21 11:43:02,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 180. [2020-07-21 11:43:02,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-07-21 11:43:02,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 208 transitions. [2020-07-21 11:43:02,677 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 208 transitions. Word has length 48 [2020-07-21 11:43:02,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:02,677 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 208 transitions. [2020-07-21 11:43:02,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-21 11:43:02,677 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 208 transitions. [2020-07-21 11:43:02,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-21 11:43:02,678 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:02,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:02,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:02,887 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:02,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:02,888 INFO L82 PathProgramCache]: Analyzing trace with hash 2058819207, now seen corresponding path program 1 times [2020-07-21 11:43:02,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:02,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628795338] [2020-07-21 11:43:02,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:02,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 11:43:02,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:03,027 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:03,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:03,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:03,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628795338] [2020-07-21 11:43:03,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:03,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-21 11:43:03,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918117548] [2020-07-21 11:43:03,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-21 11:43:03,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:03,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-21 11:43:03,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-07-21 11:43:03,039 INFO L87 Difference]: Start difference. First operand 180 states and 208 transitions. Second operand 13 states. [2020-07-21 11:43:03,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:03,537 INFO L93 Difference]: Finished difference Result 199 states and 229 transitions. [2020-07-21 11:43:03,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-21 11:43:03,538 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-07-21 11:43:03,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:03,539 INFO L225 Difference]: With dead ends: 199 [2020-07-21 11:43:03,539 INFO L226 Difference]: Without dead ends: 197 [2020-07-21 11:43:03,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-07-21 11:43:03,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-07-21 11:43:03,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 178. [2020-07-21 11:43:03,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-07-21 11:43:03,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 206 transitions. [2020-07-21 11:43:03,549 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 206 transitions. Word has length 48 [2020-07-21 11:43:03,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:03,549 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 206 transitions. [2020-07-21 11:43:03,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-21 11:43:03,549 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 206 transitions. [2020-07-21 11:43:03,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-07-21 11:43:03,550 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:03,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:03,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:03,766 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:03,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:03,767 INFO L82 PathProgramCache]: Analyzing trace with hash -600679635, now seen corresponding path program 1 times [2020-07-21 11:43:03,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:03,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729142521] [2020-07-21 11:43:03,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:03,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-21 11:43:03,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:04,162 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:04,163 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:04,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:04,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:04,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729142521] [2020-07-21 11:43:04,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:04,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-07-21 11:43:04,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030994152] [2020-07-21 11:43:04,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-21 11:43:04,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:04,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-21 11:43:04,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2020-07-21 11:43:04,182 INFO L87 Difference]: Start difference. First operand 178 states and 206 transitions. Second operand 22 states. [2020-07-21 11:43:04,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:04,768 INFO L93 Difference]: Finished difference Result 235 states and 269 transitions. [2020-07-21 11:43:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-21 11:43:04,768 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 49 [2020-07-21 11:43:04,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:04,770 INFO L225 Difference]: With dead ends: 235 [2020-07-21 11:43:04,770 INFO L226 Difference]: Without dead ends: 233 [2020-07-21 11:43:04,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=180, Invalid=326, Unknown=0, NotChecked=0, Total=506 [2020-07-21 11:43:04,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-07-21 11:43:04,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 183. [2020-07-21 11:43:04,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-07-21 11:43:04,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 212 transitions. [2020-07-21 11:43:04,778 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 212 transitions. Word has length 49 [2020-07-21 11:43:04,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:04,779 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 212 transitions. [2020-07-21 11:43:04,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-21 11:43:04,779 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 212 transitions. [2020-07-21 11:43:04,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-07-21 11:43:04,780 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:04,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:04,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:04,995 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:04,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:04,995 INFO L82 PathProgramCache]: Analyzing trace with hash -601110611, now seen corresponding path program 1 times [2020-07-21 11:43:04,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:04,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077679985] [2020-07-21 11:43:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:05,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-21 11:43:05,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:05,410 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:05,411 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:05,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:05,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077679985] [2020-07-21 11:43:05,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:05,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-07-21 11:43:05,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288632368] [2020-07-21 11:43:05,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-21 11:43:05,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:05,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-21 11:43:05,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2020-07-21 11:43:05,429 INFO L87 Difference]: Start difference. First operand 183 states and 212 transitions. Second operand 22 states. [2020-07-21 11:43:05,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:05,979 INFO L93 Difference]: Finished difference Result 225 states and 258 transitions. [2020-07-21 11:43:05,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-21 11:43:05,980 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 49 [2020-07-21 11:43:05,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:05,981 INFO L225 Difference]: With dead ends: 225 [2020-07-21 11:43:05,982 INFO L226 Difference]: Without dead ends: 223 [2020-07-21 11:43:05,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=180, Invalid=326, Unknown=0, NotChecked=0, Total=506 [2020-07-21 11:43:05,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-07-21 11:43:05,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 185. [2020-07-21 11:43:05,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-07-21 11:43:05,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 214 transitions. [2020-07-21 11:43:05,989 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 214 transitions. Word has length 49 [2020-07-21 11:43:05,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:05,990 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 214 transitions. [2020-07-21 11:43:05,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-21 11:43:05,990 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 214 transitions. [2020-07-21 11:43:05,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-21 11:43:05,990 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:05,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:06,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:06,193 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:06,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:06,194 INFO L82 PathProgramCache]: Analyzing trace with hash -860947708, now seen corresponding path program 1 times [2020-07-21 11:43:06,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:06,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653716511] [2020-07-21 11:43:06,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:06,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-21 11:43:06,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:06,599 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:06,600 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:06,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:06,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653716511] [2020-07-21 11:43:06,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:06,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-07-21 11:43:06,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565347892] [2020-07-21 11:43:06,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-21 11:43:06,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:06,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-21 11:43:06,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2020-07-21 11:43:06,618 INFO L87 Difference]: Start difference. First operand 185 states and 214 transitions. Second operand 22 states. [2020-07-21 11:43:07,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:07,494 INFO L93 Difference]: Finished difference Result 292 states and 339 transitions. [2020-07-21 11:43:07,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-21 11:43:07,495 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 50 [2020-07-21 11:43:07,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:07,497 INFO L225 Difference]: With dead ends: 292 [2020-07-21 11:43:07,498 INFO L226 Difference]: Without dead ends: 290 [2020-07-21 11:43:07,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=439, Invalid=967, Unknown=0, NotChecked=0, Total=1406 [2020-07-21 11:43:07,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-07-21 11:43:07,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 189. [2020-07-21 11:43:07,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-07-21 11:43:07,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 220 transitions. [2020-07-21 11:43:07,507 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 220 transitions. Word has length 50 [2020-07-21 11:43:07,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:07,508 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 220 transitions. [2020-07-21 11:43:07,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-21 11:43:07,508 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 220 transitions. [2020-07-21 11:43:07,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-21 11:43:07,509 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:07,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:07,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:07,722 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:07,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:07,723 INFO L82 PathProgramCache]: Analyzing trace with hash -813232458, now seen corresponding path program 1 times [2020-07-21 11:43:07,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:07,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612693412] [2020-07-21 11:43:07,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:07,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-21 11:43:07,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:08,149 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:08,150 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:08,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:08,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:08,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612693412] [2020-07-21 11:43:08,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:08,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-07-21 11:43:08,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467599373] [2020-07-21 11:43:08,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-21 11:43:08,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:08,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-21 11:43:08,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2020-07-21 11:43:08,167 INFO L87 Difference]: Start difference. First operand 189 states and 220 transitions. Second operand 22 states. [2020-07-21 11:43:08,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:08,670 INFO L93 Difference]: Finished difference Result 202 states and 233 transitions. [2020-07-21 11:43:08,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-21 11:43:08,670 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 50 [2020-07-21 11:43:08,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:08,672 INFO L225 Difference]: With dead ends: 202 [2020-07-21 11:43:08,672 INFO L226 Difference]: Without dead ends: 198 [2020-07-21 11:43:08,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=180, Invalid=326, Unknown=0, NotChecked=0, Total=506 [2020-07-21 11:43:08,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-07-21 11:43:08,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 190. [2020-07-21 11:43:08,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-07-21 11:43:08,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 221 transitions. [2020-07-21 11:43:08,682 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 221 transitions. Word has length 50 [2020-07-21 11:43:08,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:08,682 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 221 transitions. [2020-07-21 11:43:08,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-21 11:43:08,682 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 221 transitions. [2020-07-21 11:43:08,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-21 11:43:08,683 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:08,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:08,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:08,899 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:08,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:08,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1404504492, now seen corresponding path program 1 times [2020-07-21 11:43:08,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:08,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048504886] [2020-07-21 11:43:08,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:08,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:08,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-21 11:43:08,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:09,346 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:09,348 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:09,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:09,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:09,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048504886] [2020-07-21 11:43:09,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:09,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-07-21 11:43:09,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903480153] [2020-07-21 11:43:09,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-21 11:43:09,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:09,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-21 11:43:09,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2020-07-21 11:43:09,375 INFO L87 Difference]: Start difference. First operand 190 states and 221 transitions. Second operand 22 states. [2020-07-21 11:43:10,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:10,478 INFO L93 Difference]: Finished difference Result 293 states and 342 transitions. [2020-07-21 11:43:10,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-21 11:43:10,479 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 50 [2020-07-21 11:43:10,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:10,481 INFO L225 Difference]: With dead ends: 293 [2020-07-21 11:43:10,481 INFO L226 Difference]: Without dead ends: 291 [2020-07-21 11:43:10,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=439, Invalid=967, Unknown=0, NotChecked=0, Total=1406 [2020-07-21 11:43:10,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-07-21 11:43:10,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 196. [2020-07-21 11:43:10,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-07-21 11:43:10,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 227 transitions. [2020-07-21 11:43:10,498 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 227 transitions. Word has length 50 [2020-07-21 11:43:10,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:10,499 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 227 transitions. [2020-07-21 11:43:10,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-21 11:43:10,499 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 227 transitions. [2020-07-21 11:43:10,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-21 11:43:10,500 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:10,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:10,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:10,711 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:10,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:10,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1655924005, now seen corresponding path program 1 times [2020-07-21 11:43:10,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:10,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439601528] [2020-07-21 11:43:10,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:10,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-21 11:43:10,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:11,176 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:11,178 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:11,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:11,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:11,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439601528] [2020-07-21 11:43:11,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:11,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-07-21 11:43:11,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966067120] [2020-07-21 11:43:11,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-21 11:43:11,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:11,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-21 11:43:11,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=342, Unknown=0, NotChecked=0, Total=552 [2020-07-21 11:43:11,200 INFO L87 Difference]: Start difference. First operand 196 states and 227 transitions. Second operand 24 states. [2020-07-21 11:43:12,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:12,283 INFO L93 Difference]: Finished difference Result 337 states and 391 transitions. [2020-07-21 11:43:12,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-07-21 11:43:12,284 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 54 [2020-07-21 11:43:12,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:12,287 INFO L225 Difference]: With dead ends: 337 [2020-07-21 11:43:12,287 INFO L226 Difference]: Without dead ends: 335 [2020-07-21 11:43:12,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=533, Invalid=1189, Unknown=0, NotChecked=0, Total=1722 [2020-07-21 11:43:12,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-07-21 11:43:12,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 205. [2020-07-21 11:43:12,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-07-21 11:43:12,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 239 transitions. [2020-07-21 11:43:12,298 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 239 transitions. Word has length 54 [2020-07-21 11:43:12,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:12,298 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 239 transitions. [2020-07-21 11:43:12,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-21 11:43:12,298 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 239 transitions. [2020-07-21 11:43:12,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-21 11:43:12,298 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:12,299 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:12,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:12,500 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:12,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:12,500 INFO L82 PathProgramCache]: Analyzing trace with hash 92340710, now seen corresponding path program 1 times [2020-07-21 11:43:12,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:12,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104981485] [2020-07-21 11:43:12,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:12,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-21 11:43:12,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:12,965 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:12,967 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:12,983 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:12,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:43:12,996 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:43:13,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 11:43:13,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104981485] [2020-07-21 11:43:13,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:43:13,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 5] total 26 [2020-07-21 11:43:13,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350705520] [2020-07-21 11:43:13,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-21 11:43:13,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:13,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-21 11:43:13,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=404, Unknown=0, NotChecked=0, Total=650 [2020-07-21 11:43:13,240 INFO L87 Difference]: Start difference. First operand 205 states and 239 transitions. Second operand 26 states. [2020-07-21 11:43:14,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:14,021 INFO L93 Difference]: Finished difference Result 241 states and 278 transitions. [2020-07-21 11:43:14,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-21 11:43:14,021 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 54 [2020-07-21 11:43:14,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:14,024 INFO L225 Difference]: With dead ends: 241 [2020-07-21 11:43:14,024 INFO L226 Difference]: Without dead ends: 239 [2020-07-21 11:43:14,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 72 SyntacticMatches, 11 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=300, Invalid=692, Unknown=0, NotChecked=0, Total=992 [2020-07-21 11:43:14,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-07-21 11:43:14,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 201. [2020-07-21 11:43:14,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-07-21 11:43:14,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 235 transitions. [2020-07-21 11:43:14,033 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 235 transitions. Word has length 54 [2020-07-21 11:43:14,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:14,034 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 235 transitions. [2020-07-21 11:43:14,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-21 11:43:14,034 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 235 transitions. [2020-07-21 11:43:14,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-21 11:43:14,034 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:14,034 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:14,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:14,235 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:14,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:14,236 INFO L82 PathProgramCache]: Analyzing trace with hash 91909734, now seen corresponding path program 1 times [2020-07-21 11:43:14,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:14,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421580065] [2020-07-21 11:43:14,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:14,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-21 11:43:14,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:14,699 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:14,700 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:14,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:14,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:43:14,733 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:43:14,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 11:43:14,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421580065] [2020-07-21 11:43:14,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:43:14,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 5] total 26 [2020-07-21 11:43:14,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136467481] [2020-07-21 11:43:14,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-21 11:43:14,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:14,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-21 11:43:14,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=404, Unknown=0, NotChecked=0, Total=650 [2020-07-21 11:43:14,967 INFO L87 Difference]: Start difference. First operand 201 states and 235 transitions. Second operand 26 states. [2020-07-21 11:43:15,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:15,710 INFO L93 Difference]: Finished difference Result 253 states and 292 transitions. [2020-07-21 11:43:15,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-21 11:43:15,710 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 54 [2020-07-21 11:43:15,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:15,712 INFO L225 Difference]: With dead ends: 253 [2020-07-21 11:43:15,712 INFO L226 Difference]: Without dead ends: 251 [2020-07-21 11:43:15,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 72 SyntacticMatches, 11 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=300, Invalid=692, Unknown=0, NotChecked=0, Total=992 [2020-07-21 11:43:15,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-07-21 11:43:15,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 199. [2020-07-21 11:43:15,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-07-21 11:43:15,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 233 transitions. [2020-07-21 11:43:15,726 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 233 transitions. Word has length 54 [2020-07-21 11:43:15,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:15,727 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 233 transitions. [2020-07-21 11:43:15,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-21 11:43:15,728 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 233 transitions. [2020-07-21 11:43:15,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-21 11:43:15,728 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:15,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:15,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:15,942 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:15,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:15,942 INFO L82 PathProgramCache]: Analyzing trace with hash 192477039, now seen corresponding path program 1 times [2020-07-21 11:43:15,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:15,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032982876] [2020-07-21 11:43:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:16,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-21 11:43:16,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:16,406 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:16,407 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:16,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:16,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:16,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032982876] [2020-07-21 11:43:16,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:16,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-07-21 11:43:16,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060722656] [2020-07-21 11:43:16,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-21 11:43:16,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:16,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-21 11:43:16,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=342, Unknown=0, NotChecked=0, Total=552 [2020-07-21 11:43:16,428 INFO L87 Difference]: Start difference. First operand 199 states and 233 transitions. Second operand 24 states. [2020-07-21 11:43:17,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:17,467 INFO L93 Difference]: Finished difference Result 311 states and 363 transitions. [2020-07-21 11:43:17,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-07-21 11:43:17,467 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 55 [2020-07-21 11:43:17,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:17,469 INFO L225 Difference]: With dead ends: 311 [2020-07-21 11:43:17,470 INFO L226 Difference]: Without dead ends: 309 [2020-07-21 11:43:17,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=533, Invalid=1189, Unknown=0, NotChecked=0, Total=1722 [2020-07-21 11:43:17,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-07-21 11:43:17,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 201. [2020-07-21 11:43:17,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-07-21 11:43:17,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 235 transitions. [2020-07-21 11:43:17,482 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 235 transitions. Word has length 55 [2020-07-21 11:43:17,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:17,483 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 235 transitions. [2020-07-21 11:43:17,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-21 11:43:17,483 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 235 transitions. [2020-07-21 11:43:17,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-21 11:43:17,484 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:17,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:17,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:17,698 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:17,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:17,699 INFO L82 PathProgramCache]: Analyzing trace with hash 240192289, now seen corresponding path program 1 times [2020-07-21 11:43:17,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:17,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567144174] [2020-07-21 11:43:17,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:17,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-21 11:43:17,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:18,149 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:18,150 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:18,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:18,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:18,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567144174] [2020-07-21 11:43:18,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:18,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-07-21 11:43:18,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907391434] [2020-07-21 11:43:18,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-21 11:43:18,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:18,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-21 11:43:18,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=342, Unknown=0, NotChecked=0, Total=552 [2020-07-21 11:43:18,170 INFO L87 Difference]: Start difference. First operand 201 states and 235 transitions. Second operand 24 states. [2020-07-21 11:43:18,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:18,708 INFO L93 Difference]: Finished difference Result 214 states and 248 transitions. [2020-07-21 11:43:18,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-21 11:43:18,709 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 55 [2020-07-21 11:43:18,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:18,710 INFO L225 Difference]: With dead ends: 214 [2020-07-21 11:43:18,710 INFO L226 Difference]: Without dead ends: 210 [2020-07-21 11:43:18,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=214, Invalid=386, Unknown=0, NotChecked=0, Total=600 [2020-07-21 11:43:18,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-07-21 11:43:18,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 201. [2020-07-21 11:43:18,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-07-21 11:43:18,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 234 transitions. [2020-07-21 11:43:18,722 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 234 transitions. Word has length 55 [2020-07-21 11:43:18,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:18,722 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 234 transitions. [2020-07-21 11:43:18,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-21 11:43:18,722 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 234 transitions. [2020-07-21 11:43:18,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-07-21 11:43:18,723 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:18,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:18,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:18,939 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:18,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:18,939 INFO L82 PathProgramCache]: Analyzing trace with hash 882665926, now seen corresponding path program 1 times [2020-07-21 11:43:18,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:18,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958656829] [2020-07-21 11:43:18,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:19,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 28 conjunts are in the unsatisfiable core [2020-07-21 11:43:19,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:19,459 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:19,460 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:19,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:19,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:19,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958656829] [2020-07-21 11:43:19,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:19,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-07-21 11:43:19,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854486579] [2020-07-21 11:43:19,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-21 11:43:19,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:19,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-21 11:43:19,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=403, Unknown=0, NotChecked=0, Total=650 [2020-07-21 11:43:19,488 INFO L87 Difference]: Start difference. First operand 201 states and 234 transitions. Second operand 26 states. [2020-07-21 11:43:20,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:20,745 INFO L93 Difference]: Finished difference Result 357 states and 416 transitions. [2020-07-21 11:43:20,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-07-21 11:43:20,746 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 59 [2020-07-21 11:43:20,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:20,748 INFO L225 Difference]: With dead ends: 357 [2020-07-21 11:43:20,748 INFO L226 Difference]: Without dead ends: 355 [2020-07-21 11:43:20,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=636, Invalid=1434, Unknown=0, NotChecked=0, Total=2070 [2020-07-21 11:43:20,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-07-21 11:43:20,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 217. [2020-07-21 11:43:20,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-07-21 11:43:20,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 254 transitions. [2020-07-21 11:43:20,760 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 254 transitions. Word has length 59 [2020-07-21 11:43:20,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:20,760 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 254 transitions. [2020-07-21 11:43:20,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-21 11:43:20,760 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 254 transitions. [2020-07-21 11:43:20,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-21 11:43:20,761 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:20,761 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:20,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:20,970 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:20,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:20,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1484220062, now seen corresponding path program 1 times [2020-07-21 11:43:20,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:20,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182162972] [2020-07-21 11:43:20,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:21,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 28 conjunts are in the unsatisfiable core [2020-07-21 11:43:21,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:21,482 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:21,484 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:21,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:43:21,517 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:43:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 11:43:21,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182162972] [2020-07-21 11:43:21,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:43:21,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 5] total 28 [2020-07-21 11:43:21,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617021234] [2020-07-21 11:43:21,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-21 11:43:21,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:21,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-21 11:43:21,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=470, Unknown=0, NotChecked=0, Total=756 [2020-07-21 11:43:21,798 INFO L87 Difference]: Start difference. First operand 217 states and 254 transitions. Second operand 28 states. [2020-07-21 11:43:23,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:23,085 INFO L93 Difference]: Finished difference Result 335 states and 393 transitions. [2020-07-21 11:43:23,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-07-21 11:43:23,086 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 60 [2020-07-21 11:43:23,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:23,088 INFO L225 Difference]: With dead ends: 335 [2020-07-21 11:43:23,088 INFO L226 Difference]: Without dead ends: 333 [2020-07-21 11:43:23,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 81 SyntacticMatches, 12 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1098 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=791, Invalid=1861, Unknown=0, NotChecked=0, Total=2652 [2020-07-21 11:43:23,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-07-21 11:43:23,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 215. [2020-07-21 11:43:23,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-07-21 11:43:23,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 252 transitions. [2020-07-21 11:43:23,100 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 252 transitions. Word has length 60 [2020-07-21 11:43:23,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:23,100 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 252 transitions. [2020-07-21 11:43:23,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-21 11:43:23,100 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 252 transitions. [2020-07-21 11:43:23,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-21 11:43:23,101 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:23,101 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:23,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:23,315 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:23,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:23,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1436504812, now seen corresponding path program 1 times [2020-07-21 11:43:23,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:23,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129017214] [2020-07-21 11:43:23,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:23,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 28 conjunts are in the unsatisfiable core [2020-07-21 11:43:23,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:23,837 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:23,838 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:23,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:23,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:43:23,869 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:43:24,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 11:43:24,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129017214] [2020-07-21 11:43:24,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:43:24,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 5] total 28 [2020-07-21 11:43:24,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542986607] [2020-07-21 11:43:24,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-21 11:43:24,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:24,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-21 11:43:24,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=470, Unknown=0, NotChecked=0, Total=756 [2020-07-21 11:43:24,146 INFO L87 Difference]: Start difference. First operand 215 states and 252 transitions. Second operand 28 states. [2020-07-21 11:43:24,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:24,865 INFO L93 Difference]: Finished difference Result 228 states and 266 transitions. [2020-07-21 11:43:24,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-21 11:43:24,865 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 60 [2020-07-21 11:43:24,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:24,867 INFO L225 Difference]: With dead ends: 228 [2020-07-21 11:43:24,867 INFO L226 Difference]: Without dead ends: 222 [2020-07-21 11:43:24,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 81 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=315, Invalid=615, Unknown=0, NotChecked=0, Total=930 [2020-07-21 11:43:24,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-07-21 11:43:24,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 211. [2020-07-21 11:43:24,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-07-21 11:43:24,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 247 transitions. [2020-07-21 11:43:24,878 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 247 transitions. Word has length 60 [2020-07-21 11:43:24,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:24,878 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 247 transitions. [2020-07-21 11:43:24,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-21 11:43:24,878 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 247 transitions. [2020-07-21 11:43:24,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-21 11:43:24,879 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:24,879 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:25,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:25,093 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:25,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:25,093 INFO L82 PathProgramCache]: Analyzing trace with hash 458480185, now seen corresponding path program 1 times [2020-07-21 11:43:25,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:25,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427964894] [2020-07-21 11:43:25,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:25,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 30 conjunts are in the unsatisfiable core [2020-07-21 11:43:25,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:25,689 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:25,690 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:25,719 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:25,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:43:25,731 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:43:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-21 11:43:26,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427964894] [2020-07-21 11:43:26,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:43:26,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 5] total 30 [2020-07-21 11:43:26,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42124630] [2020-07-21 11:43:26,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-21 11:43:26,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:26,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-21 11:43:26,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=541, Unknown=0, NotChecked=0, Total=870 [2020-07-21 11:43:26,039 INFO L87 Difference]: Start difference. First operand 211 states and 247 transitions. Second operand 30 states. [2020-07-21 11:43:27,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:27,523 INFO L93 Difference]: Finished difference Result 359 states and 424 transitions. [2020-07-21 11:43:27,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-07-21 11:43:27,523 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 64 [2020-07-21 11:43:27,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:27,524 INFO L225 Difference]: With dead ends: 359 [2020-07-21 11:43:27,524 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 11:43:27,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 86 SyntacticMatches, 13 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=915, Invalid=2165, Unknown=0, NotChecked=0, Total=3080 [2020-07-21 11:43:27,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 11:43:27,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 11:43:27,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 11:43:27,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 11:43:27,529 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2020-07-21 11:43:27,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:27,529 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 11:43:27,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-21 11:43:27,529 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 11:43:27,529 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 11:43:27,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:27,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 11:43:27,968 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-07-21 11:43:30,583 WARN L193 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 495 DAG size of output: 297 [2020-07-21 11:43:31,381 WARN L193 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 454 DAG size of output: 292 [2020-07-21 11:43:31,594 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 12 [2020-07-21 11:43:35,147 WARN L193 SmtUtils]: Spent 3.55 s on a formula simplification. DAG size of input: 273 DAG size of output: 8 [2020-07-21 11:43:37,384 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 229 DAG size of output: 6 [2020-07-21 11:43:37,387 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:43:37,388 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:43:37,388 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:43:37,388 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:43:37,388 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 11:43:37,388 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:43:37,388 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:43:37,388 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-21 11:43:37,388 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-21 11:43:37,388 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-07-21 11:43:37,388 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-21 11:43:37,388 INFO L268 CegarLoopResult]: For program point L927(lines 927 939) no Hoare annotation was computed. [2020-07-21 11:43:37,389 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 115) no Hoare annotation was computed. [2020-07-21 11:43:37,389 INFO L268 CegarLoopResult]: For program point L217(line 217) no Hoare annotation was computed. [2020-07-21 11:43:37,389 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 15 1004) no Hoare annotation was computed. [2020-07-21 11:43:37,389 INFO L268 CegarLoopResult]: For program point L663(lines 663 961) no Hoare annotation was computed. [2020-07-21 11:43:37,389 INFO L268 CegarLoopResult]: For program point L432(lines 432 983) no Hoare annotation was computed. [2020-07-21 11:43:37,389 INFO L268 CegarLoopResult]: For program point L267(line 267) no Hoare annotation was computed. [2020-07-21 11:43:37,389 INFO L268 CegarLoopResult]: For program point L647(lines 647 963) no Hoare annotation was computed. [2020-07-21 11:43:37,389 INFO L268 CegarLoopResult]: For program point L383(lines 383 986) no Hoare annotation was computed. [2020-07-21 11:43:37,390 INFO L268 CegarLoopResult]: For program point L20(lines 20 1003) no Hoare annotation was computed. [2020-07-21 11:43:37,390 INFO L268 CegarLoopResult]: For program point L466(lines 466 490) no Hoare annotation was computed. [2020-07-21 11:43:37,390 INFO L268 CegarLoopResult]: For program point L879(lines 879 905) no Hoare annotation was computed. [2020-07-21 11:43:37,390 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 917) no Hoare annotation was computed. [2020-07-21 11:43:37,390 INFO L268 CegarLoopResult]: For program point L169(lines 169 191) no Hoare annotation was computed. [2020-07-21 11:43:37,391 INFO L268 CegarLoopResult]: For program point L681(lines 681 692) no Hoare annotation was computed. [2020-07-21 11:43:37,391 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 11:43:37,391 INFO L268 CegarLoopResult]: For program point L70(lines 70 286) no Hoare annotation was computed. [2020-07-21 11:43:37,391 INFO L268 CegarLoopResult]: For program point L929(line 929) no Hoare annotation was computed. [2020-07-21 11:43:37,391 INFO L268 CegarLoopResult]: For program point L731(lines 731 955) no Hoare annotation was computed. [2020-07-21 11:43:37,391 INFO L268 CegarLoopResult]: For program point L153(lines 153 232) no Hoare annotation was computed. [2020-07-21 11:43:37,392 INFO L268 CegarLoopResult]: For program point L500(lines 500 977) no Hoare annotation was computed. [2020-07-21 11:43:37,392 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 15 1004) no Hoare annotation was computed. [2020-07-21 11:43:37,392 INFO L268 CegarLoopResult]: For program point L203(lines 203 229) no Hoare annotation was computed. [2020-07-21 11:43:37,392 INFO L268 CegarLoopResult]: For program point L715(lines 715 957) no Hoare annotation was computed. [2020-07-21 11:43:37,392 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 893) no Hoare annotation was computed. [2020-07-21 11:43:37,393 INFO L268 CegarLoopResult]: For program point L451(lines 451 980) no Hoare annotation was computed. [2020-07-21 11:43:37,393 INFO L268 CegarLoopResult]: For program point L864(lines 864 944) no Hoare annotation was computed. [2020-07-21 11:43:37,393 INFO L268 CegarLoopResult]: For program point L253(lines 253 275) no Hoare annotation was computed. [2020-07-21 11:43:37,393 INFO L268 CegarLoopResult]: For program point L534(lines 534 558) no Hoare annotation was computed. [2020-07-21 11:43:37,394 INFO L268 CegarLoopResult]: For program point L881(line 881) no Hoare annotation was computed. [2020-07-21 11:43:37,394 INFO L268 CegarLoopResult]: For program point L749(lines 749 760) no Hoare annotation was computed. [2020-07-21 11:43:37,394 INFO L268 CegarLoopResult]: For program point L171(line 171) no Hoare annotation was computed. [2020-07-21 11:43:37,394 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 205) no Hoare annotation was computed. [2020-07-21 11:43:37,394 INFO L268 CegarLoopResult]: For program point L799(lines 799 949) no Hoare annotation was computed. [2020-07-21 11:43:37,394 INFO L268 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-07-21 11:43:37,395 INFO L268 CegarLoopResult]: For program point L568(lines 568 971) no Hoare annotation was computed. [2020-07-21 11:43:37,395 INFO L268 CegarLoopResult]: For program point L915(lines 915 941) no Hoare annotation was computed. [2020-07-21 11:43:37,395 INFO L268 CegarLoopResult]: For program point L783(lines 783 951) no Hoare annotation was computed. [2020-07-21 11:43:37,395 INFO L268 CegarLoopResult]: For program point L205(line 205) no Hoare annotation was computed. [2020-07-21 11:43:37,395 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 929) no Hoare annotation was computed. [2020-07-21 11:43:37,395 INFO L268 CegarLoopResult]: For program point L519(lines 519 974) no Hoare annotation was computed. [2020-07-21 11:43:37,395 INFO L264 CegarLoopResult]: At program point L866(lines 24 998) the Hoare annotation is: (and (<= 0 main_~main__t~0) (<= main_~main__t~0 main_~main__tagbuf_len~0)) [2020-07-21 11:43:37,395 INFO L268 CegarLoopResult]: For program point L255(line 255) no Hoare annotation was computed. [2020-07-21 11:43:37,395 INFO L268 CegarLoopResult]: For program point L602(lines 602 626) no Hoare annotation was computed. [2020-07-21 11:43:37,396 INFO L268 CegarLoopResult]: For program point L24(lines 24 998) no Hoare annotation was computed. [2020-07-21 11:43:37,396 INFO L268 CegarLoopResult]: For program point L817(lines 817 828) no Hoare annotation was computed. [2020-07-21 11:43:37,396 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 255) no Hoare annotation was computed. [2020-07-21 11:43:37,396 INFO L268 CegarLoopResult]: For program point L636(lines 636 965) no Hoare annotation was computed. [2020-07-21 11:43:37,396 INFO L268 CegarLoopResult]: For program point L917(line 917) no Hoare annotation was computed. [2020-07-21 11:43:37,396 INFO L268 CegarLoopResult]: For program point L851(lines 851 945) no Hoare annotation was computed. [2020-07-21 11:43:37,396 INFO L268 CegarLoopResult]: For program point L141(lines 141 234) no Hoare annotation was computed. [2020-07-21 11:43:37,396 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 217) no Hoare annotation was computed. [2020-07-21 11:43:37,396 INFO L268 CegarLoopResult]: For program point L587(lines 587 968) no Hoare annotation was computed. [2020-07-21 11:43:37,397 INFO L268 CegarLoopResult]: For program point L323(lines 323 991) no Hoare annotation was computed. [2020-07-21 11:43:37,397 INFO L268 CegarLoopResult]: For program point L670(lines 670 694) no Hoare annotation was computed. [2020-07-21 11:43:37,397 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 143) no Hoare annotation was computed. [2020-07-21 11:43:37,397 INFO L268 CegarLoopResult]: For program point L307(lines 307 993) no Hoare annotation was computed. [2020-07-21 11:43:37,397 INFO L264 CegarLoopResult]: At program point L902(lines 63 997) the Hoare annotation is: (and (<= main_~main__t~0 main_~main__tagbuf_len~0) (<= 1 main_~main__t~0)) [2020-07-21 11:43:37,397 INFO L268 CegarLoopResult]: For program point L704(lines 704 959) no Hoare annotation was computed. [2020-07-21 11:43:37,399 INFO L268 CegarLoopResult]: For program point L341(lines 341 352) no Hoare annotation was computed. [2020-07-21 11:43:37,399 INFO L268 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-07-21 11:43:37,399 INFO L268 CegarLoopResult]: For program point L655(lines 655 962) no Hoare annotation was computed. [2020-07-21 11:43:37,399 INFO L268 CegarLoopResult]: For program point L44(lines 44 54) no Hoare annotation was computed. [2020-07-21 11:43:37,400 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 267) no Hoare annotation was computed. [2020-07-21 11:43:37,400 INFO L271 CegarLoopResult]: At program point L1002(lines 20 1003) the Hoare annotation is: true [2020-07-21 11:43:37,400 INFO L268 CegarLoopResult]: For program point L391(lines 391 985) no Hoare annotation was computed. [2020-07-21 11:43:37,400 INFO L268 CegarLoopResult]: For program point L738(lines 738 762) no Hoare annotation was computed. [2020-07-21 11:43:37,400 INFO L268 CegarLoopResult]: For program point L94(lines 94 283) no Hoare annotation was computed. [2020-07-21 11:43:37,400 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 171) no Hoare annotation was computed. [2020-07-21 11:43:37,400 INFO L268 CegarLoopResult]: For program point L375(lines 375 987) no Hoare annotation was computed. [2020-07-21 11:43:37,400 INFO L268 CegarLoopResult]: For program point L772(lines 772 953) no Hoare annotation was computed. [2020-07-21 11:43:37,400 INFO L268 CegarLoopResult]: For program point L409(lines 409 420) no Hoare annotation was computed. [2020-07-21 11:43:37,400 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 155) no Hoare annotation was computed. [2020-07-21 11:43:37,401 INFO L268 CegarLoopResult]: For program point L723(lines 723 956) no Hoare annotation was computed. [2020-07-21 11:43:37,401 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 11:43:37,401 INFO L268 CegarLoopResult]: For program point L459(lines 459 979) no Hoare annotation was computed. [2020-07-21 11:43:37,401 INFO L264 CegarLoopResult]: At program point L938(lines 856 945) the Hoare annotation is: (let ((.cse0 (<= main_~main__t~0 main_~main__tagbuf_len~0)) (.cse1 (<= 9 main_~main__t~0))) (or (and .cse0 (<= main_~main__t~0 9) .cse1) (and .cse0 .cse1 (<= 1 main_~__VERIFIER_assert__cond~51)))) [2020-07-21 11:43:37,401 INFO L268 CegarLoopResult]: For program point L872(lines 872 943) no Hoare annotation was computed. [2020-07-21 11:43:37,401 INFO L268 CegarLoopResult]: For program point L806(lines 806 830) no Hoare annotation was computed. [2020-07-21 11:43:37,401 INFO L268 CegarLoopResult]: For program point L162(lines 162 231) no Hoare annotation was computed. [2020-07-21 11:43:37,401 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 34) no Hoare annotation was computed. [2020-07-21 11:43:37,402 INFO L268 CegarLoopResult]: For program point L63(lines 63 997) no Hoare annotation was computed. [2020-07-21 11:43:37,402 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 15 1004) the Hoare annotation is: true [2020-07-21 11:43:37,402 INFO L268 CegarLoopResult]: For program point L443(lines 443 981) no Hoare annotation was computed. [2020-07-21 11:43:37,402 INFO L268 CegarLoopResult]: For program point L113(lines 113 121) no Hoare annotation was computed. [2020-07-21 11:43:37,402 INFO L268 CegarLoopResult]: For program point L840(lines 840 947) no Hoare annotation was computed. [2020-07-21 11:43:37,402 INFO L268 CegarLoopResult]: For program point L130(lines 130 282) no Hoare annotation was computed. [2020-07-21 11:43:37,402 INFO L268 CegarLoopResult]: For program point L477(lines 477 488) no Hoare annotation was computed. [2020-07-21 11:43:37,402 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 183) no Hoare annotation was computed. [2020-07-21 11:43:37,402 INFO L268 CegarLoopResult]: For program point L791(lines 791 950) no Hoare annotation was computed. [2020-07-21 11:43:37,402 INFO L268 CegarLoopResult]: For program point L246(lines 246 281) no Hoare annotation was computed. [2020-07-21 11:43:37,403 INFO L268 CegarLoopResult]: For program point L81(lines 81 284) no Hoare annotation was computed. [2020-07-21 11:43:37,403 INFO L268 CegarLoopResult]: For program point L527(lines 527 973) no Hoare annotation was computed. [2020-07-21 11:43:37,403 INFO L268 CegarLoopResult]: For program point L296(lines 296 995) no Hoare annotation was computed. [2020-07-21 11:43:37,403 INFO L268 CegarLoopResult]: For program point L32(lines 32 56) no Hoare annotation was computed. [2020-07-21 11:43:37,403 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 103) no Hoare annotation was computed. [2020-07-21 11:43:37,403 INFO L268 CegarLoopResult]: For program point L511(lines 511 975) no Hoare annotation was computed. [2020-07-21 11:43:37,403 INFO L268 CegarLoopResult]: For program point L891(lines 891 903) no Hoare annotation was computed. [2020-07-21 11:43:37,403 INFO L264 CegarLoopResult]: At program point L280(lines 130 282) the Hoare annotation is: (and (<= main_~main__t~0 main_~main__tagbuf_len~0) (<= 1 main_~main__t~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0))) [2020-07-21 11:43:37,403 INFO L268 CegarLoopResult]: For program point L181(lines 181 189) no Hoare annotation was computed. [2020-07-21 11:43:37,403 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 11:43:37,403 INFO L268 CegarLoopResult]: For program point L330(lines 330 354) no Hoare annotation was computed. [2020-07-21 11:43:37,403 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2020-07-21 11:43:37,404 INFO L268 CegarLoopResult]: For program point L545(lines 545 556) no Hoare annotation was computed. [2020-07-21 11:43:37,404 INFO L268 CegarLoopResult]: For program point L215(lines 215 227) no Hoare annotation was computed. [2020-07-21 11:43:37,404 INFO L268 CegarLoopResult]: For program point L595(lines 595 967) no Hoare annotation was computed. [2020-07-21 11:43:37,404 INFO L268 CegarLoopResult]: For program point L364(lines 364 989) no Hoare annotation was computed. [2020-07-21 11:43:37,404 INFO L268 CegarLoopResult]: For program point L265(lines 265 273) no Hoare annotation was computed. [2020-07-21 11:43:37,404 INFO L268 CegarLoopResult]: For program point L579(lines 579 969) no Hoare annotation was computed. [2020-07-21 11:43:37,404 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 11:43:37,404 INFO L268 CegarLoopResult]: For program point L893(line 893) no Hoare annotation was computed. [2020-07-21 11:43:37,404 INFO L268 CegarLoopResult]: For program point L315(lines 315 992) no Hoare annotation was computed. [2020-07-21 11:43:37,404 INFO L268 CegarLoopResult]: For program point L183(line 183) no Hoare annotation was computed. [2020-07-21 11:43:37,404 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 881) no Hoare annotation was computed. [2020-07-21 11:43:37,404 INFO L268 CegarLoopResult]: For program point L398(lines 398 422) no Hoare annotation was computed. [2020-07-21 11:43:37,404 INFO L268 CegarLoopResult]: For program point L134(lines 134 240) no Hoare annotation was computed. [2020-07-21 11:43:37,405 INFO L268 CegarLoopResult]: For program point L101(lines 101 123) no Hoare annotation was computed. [2020-07-21 11:43:37,405 INFO L268 CegarLoopResult]: For program point L613(lines 613 624) no Hoare annotation was computed. [2020-07-21 11:43:37,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:43:37 BoogieIcfgContainer [2020-07-21 11:43:37,422 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:43:37,423 INFO L168 Benchmark]: Toolchain (without parser) took 63073.41 ms. Allocated memory was 137.4 MB in the beginning and 493.9 MB in the end (delta: 356.5 MB). Free memory was 100.5 MB in the beginning and 425.2 MB in the end (delta: -324.7 MB). Peak memory consumption was 371.5 MB. Max. memory is 7.1 GB. [2020-07-21 11:43:37,423 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 11:43:37,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 540.91 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 100.3 MB in the beginning and 174.9 MB in the end (delta: -74.7 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2020-07-21 11:43:37,424 INFO L168 Benchmark]: Boogie Preprocessor took 54.96 ms. Allocated memory is still 200.8 MB. Free memory was 174.9 MB in the beginning and 172.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-21 11:43:37,425 INFO L168 Benchmark]: RCFGBuilder took 787.13 ms. Allocated memory is still 200.8 MB. Free memory was 172.2 MB in the beginning and 122.1 MB in the end (delta: 50.1 MB). Peak memory consumption was 50.1 MB. Max. memory is 7.1 GB. [2020-07-21 11:43:37,425 INFO L168 Benchmark]: TraceAbstraction took 61683.80 ms. Allocated memory was 200.8 MB in the beginning and 493.9 MB in the end (delta: 293.1 MB). Free memory was 121.4 MB in the beginning and 425.2 MB in the end (delta: -303.8 MB). Peak memory consumption was 328.9 MB. Max. memory is 7.1 GB. [2020-07-21 11:43:37,427 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 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 540.91 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 100.3 MB in the beginning and 174.9 MB in the end (delta: -74.7 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.96 ms. Allocated memory is still 200.8 MB. Free memory was 174.9 MB in the beginning and 172.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 787.13 ms. Allocated memory is still 200.8 MB. Free memory was 172.2 MB in the beginning and 122.1 MB in the end (delta: 50.1 MB). Peak memory consumption was 50.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 61683.80 ms. Allocated memory was 200.8 MB in the beginning and 493.9 MB in the end (delta: 293.1 MB). Free memory was 121.4 MB in the beginning and 425.2 MB in the end (delta: -303.8 MB). Peak memory consumption was 328.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 34]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 929]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 183]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 205]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 893]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 217]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 255]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 917]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 881]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 143]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 267]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 103]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 171]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 155]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 115]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 46]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 856]: Loop Invariant Derived loop invariant: ((main__t <= main__tagbuf_len && main__t <= 9) && 9 <= main__t) || ((main__t <= main__tagbuf_len && 9 <= main__t) && 1 <= __VERIFIER_assert__cond) - InvariantResult [Line: 130]: Loop Invariant Derived loop invariant: (main__t <= main__tagbuf_len && 1 <= main__t) && !(main__tagbuf_len == main__t) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 0 <= main__t && main__t <= main__tagbuf_len - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: main__t <= main__tagbuf_len && 1 <= main__t - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 129 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 51.9s, OverallIterations: 49, TraceHistogramMax: 2, AutomataDifference: 25.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 9.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2785 SDtfs, 16469 SDslu, 7618 SDs, 0 SdLazy, 18092 SolverSat, 3905 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2308 GetRequests, 1331 SyntacticMatches, 59 SemanticMatches, 918 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10027 ImplicationChecksByTransitivity, 15.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=217occurred in iteration=46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 49 MinimizatonAttempts, 1918 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 63 NumberOfFragments, 51 HoareAnnotationTreeSize, 9 FomulaSimplifications, 728201119763822 FormulaSimplificationTreeSizeReduction, 3.6s HoareSimplificationTime, 9 FomulaSimplificationsInter, 43940226175110 FormulaSimplificationTreeSizeReductionInter, 5.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 12.0s InterpolantComputationTime, 1775 NumberOfCodeBlocks, 1775 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 2013 ConstructedInterpolants, 0 QuantifiedInterpolants, 733261 SizeOfPredicates, 193 NumberOfNonLiveVariables, 10609 ConjunctsInSsa, 792 ConjunctsInUnsatCore, 54 InterpolantComputations, 44 PerfectInterpolantSequences, 15/54 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...