/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:29:35,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:29:35,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:29:35,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:29:35,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:29:35,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:29:35,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:29:35,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:29:35,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:29:35,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:29:35,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:29:35,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:29:35,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:29:35,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:29:35,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:29:35,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:29:35,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:29:35,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:29:35,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:29:35,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:29:35,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:29:35,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:29:35,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:29:35,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:29:35,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:29:35,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:29:35,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:29:35,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:29:35,529 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 14:29:35,545 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:29:35,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:29:35,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:29:35,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:29:35,547 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:29:35,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:29:35,547 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:29:35,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:29:35,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:29:35,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:29:35,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:29:35,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:29:35,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:29:35,549 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:29:35,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:29:35,549 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:29:35,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:29:35,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:29:35,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:29:35,550 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:29:35,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:29:35,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:29:35,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:29:35,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:29:35,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:29:35,551 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:29:35,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:35,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:29:35,552 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:29:35,552 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 14:29:35,865 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:29:35,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:29:35,883 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:29:35,884 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:29:35,885 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:29:35,886 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2020-07-20 14:29:35,950 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2c189207/bc0395ed8f5d49c58c895bbda04c9be4/FLAG4eb673c1c [2020-07-20 14:29:36,477 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:29:36,478 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2020-07-20 14:29:36,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2c189207/bc0395ed8f5d49c58c895bbda04c9be4/FLAG4eb673c1c [2020-07-20 14:29:36,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2c189207/bc0395ed8f5d49c58c895bbda04c9be4 [2020-07-20 14:29:36,853 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:29:36,857 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:29:36,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:29:36,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:29:36,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:29:36,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:29:36" (1/1) ... [2020-07-20 14:29:36,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b492b00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:36, skipping insertion in model container [2020-07-20 14:29:36,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:29:36" (1/1) ... [2020-07-20 14:29:36,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:29:36,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:29:37,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:29:37,143 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:29:37,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:29:37,295 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:29:37,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:37 WrapperNode [2020-07-20 14:29:37,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:29:37,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:29:37,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:29:37,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:29:37,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:37" (1/1) ... [2020-07-20 14:29:37,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:37" (1/1) ... [2020-07-20 14:29:37,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:37" (1/1) ... [2020-07-20 14:29:37,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:37" (1/1) ... [2020-07-20 14:29:37,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:37" (1/1) ... [2020-07-20 14:29:37,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:37" (1/1) ... [2020-07-20 14:29:37,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:37" (1/1) ... [2020-07-20 14:29:37,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:29:37,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:29:37,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:29:37,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:29:37,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:29:37,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:29:37,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:29:37,441 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 14:29:37,441 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:29:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:29:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 14:29:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 14:29:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 14:29:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 14:29:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:29:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:29:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:29:37,877 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:29:37,877 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 14:29:37,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:29:37 BoogieIcfgContainer [2020-07-20 14:29:37,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:29:37,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:29:37,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:29:37,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:29:37,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:29:36" (1/3) ... [2020-07-20 14:29:37,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdcc5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:29:37, skipping insertion in model container [2020-07-20 14:29:37,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:29:37" (2/3) ... [2020-07-20 14:29:37,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdcc5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:29:37, skipping insertion in model container [2020-07-20 14:29:37,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:29:37" (3/3) ... [2020-07-20 14:29:37,892 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i.v+cfa-reducer.c [2020-07-20 14:29:37,905 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:29:37,913 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 18 error locations. [2020-07-20 14:29:37,929 INFO L251 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-07-20 14:29:37,974 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:29:37,974 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:29:37,974 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:29:37,974 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:29:37,975 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:29:37,975 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:29:37,975 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:29:37,975 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:29:38,001 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-07-20 14:29:38,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 14:29:38,008 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:38,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:38,010 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:38,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:38,017 INFO L82 PathProgramCache]: Analyzing trace with hash -2019463306, now seen corresponding path program 1 times [2020-07-20 14:29:38,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:38,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343191752] [2020-07-20 14:29:38,028 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:38,124 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:38,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:38,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 14:29:38,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:38,186 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:38,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:29:38,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343191752] [2020-07-20 14:29:38,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:29:38,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:29:38,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007513204] [2020-07-20 14:29:38,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:29:38,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:38,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:29:38,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:29:38,254 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 3 states. [2020-07-20 14:29:38,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:38,294 INFO L93 Difference]: Finished difference Result 93 states and 129 transitions. [2020-07-20 14:29:38,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:29:38,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-20 14:29:38,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:38,308 INFO L225 Difference]: With dead ends: 93 [2020-07-20 14:29:38,308 INFO L226 Difference]: Without dead ends: 80 [2020-07-20 14:29:38,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:29:38,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-07-20 14:29:38,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-07-20 14:29:38,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-20 14:29:38,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2020-07-20 14:29:38,364 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 19 [2020-07-20 14:29:38,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:38,365 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2020-07-20 14:29:38,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:29:38,365 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2020-07-20 14:29:38,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 14:29:38,366 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:38,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:38,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:38,582 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:38,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:38,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1821150056, now seen corresponding path program 1 times [2020-07-20 14:29:38,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:38,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120499356] [2020-07-20 14:29:38,584 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:38,636 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:38,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:38,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:29:38,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:38,676 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:38,679 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:38,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:38,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:29:38,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120499356] [2020-07-20 14:29:38,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:29:38,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 14:29:38,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450020108] [2020-07-20 14:29:38,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:29:38,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:38,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:29:38,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:29:38,694 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand 6 states. [2020-07-20 14:29:38,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:38,819 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2020-07-20 14:29:38,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:29:38,820 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-07-20 14:29:38,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:38,822 INFO L225 Difference]: With dead ends: 80 [2020-07-20 14:29:38,822 INFO L226 Difference]: Without dead ends: 78 [2020-07-20 14:29:38,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:29:38,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-20 14:29:38,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-07-20 14:29:38,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-07-20 14:29:38,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2020-07-20 14:29:38,836 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 20 [2020-07-20 14:29:38,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:38,837 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2020-07-20 14:29:38,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:29:38,837 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2020-07-20 14:29:38,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 14:29:38,838 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:38,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:39,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:39,055 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:39,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:39,056 INFO L82 PathProgramCache]: Analyzing trace with hash 2073610827, now seen corresponding path program 1 times [2020-07-20 14:29:39,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:39,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558444827] [2020-07-20 14:29:39,057 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:39,100 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:39,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:39,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 14:29:39,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:39,122 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:39,125 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:39,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:39,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:29:39,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558444827] [2020-07-20 14:29:39,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:29:39,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 14:29:39,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301087280] [2020-07-20 14:29:39,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 14:29:39,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:39,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 14:29:39,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 14:29:39,149 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 4 states. [2020-07-20 14:29:39,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:39,288 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2020-07-20 14:29:39,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:29:39,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-20 14:29:39,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:39,290 INFO L225 Difference]: With dead ends: 101 [2020-07-20 14:29:39,291 INFO L226 Difference]: Without dead ends: 99 [2020-07-20 14:29:39,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:29:39,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-07-20 14:29:39,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 76. [2020-07-20 14:29:39,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-20 14:29:39,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2020-07-20 14:29:39,301 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 22 [2020-07-20 14:29:39,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:39,301 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2020-07-20 14:29:39,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 14:29:39,302 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2020-07-20 14:29:39,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 14:29:39,303 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:39,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:39,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:39,511 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:39,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:39,512 INFO L82 PathProgramCache]: Analyzing trace with hash -142570686, now seen corresponding path program 1 times [2020-07-20 14:29:39,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:39,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577414144] [2020-07-20 14:29:39,518 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:39,563 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:39,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:39,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 14:29:39,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:39,585 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:39,586 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:39,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:39,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:29:39,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577414144] [2020-07-20 14:29:39,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:29:39,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:29:39,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587806270] [2020-07-20 14:29:39,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:29:39,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:39,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:29:39,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:29:39,598 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 5 states. [2020-07-20 14:29:39,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:39,681 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2020-07-20 14:29:39,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:29:39,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-07-20 14:29:39,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:39,683 INFO L225 Difference]: With dead ends: 76 [2020-07-20 14:29:39,683 INFO L226 Difference]: Without dead ends: 74 [2020-07-20 14:29:39,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:29:39,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-20 14:29:39,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-07-20 14:29:39,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-07-20 14:29:39,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-07-20 14:29:39,693 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 23 [2020-07-20 14:29:39,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:39,693 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-07-20 14:29:39,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:29:39,693 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-07-20 14:29:39,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 14:29:39,694 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:39,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:39,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:39,909 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:39,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:39,910 INFO L82 PathProgramCache]: Analyzing trace with hash 402497124, now seen corresponding path program 1 times [2020-07-20 14:29:39,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:39,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887428331] [2020-07-20 14:29:39,911 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:39,970 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:39,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:39,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 14:29:39,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:40,005 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:40,009 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:40,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:40,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:29:40,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887428331] [2020-07-20 14:29:40,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:29:40,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 14:29:40,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314252800] [2020-07-20 14:29:40,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 14:29:40,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:40,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 14:29:40,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 14:29:40,028 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 4 states. [2020-07-20 14:29:40,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:40,155 INFO L93 Difference]: Finished difference Result 158 states and 166 transitions. [2020-07-20 14:29:40,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:29:40,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-07-20 14:29:40,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:40,158 INFO L225 Difference]: With dead ends: 158 [2020-07-20 14:29:40,158 INFO L226 Difference]: Without dead ends: 156 [2020-07-20 14:29:40,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:29:40,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-07-20 14:29:40,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 77. [2020-07-20 14:29:40,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-20 14:29:40,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-07-20 14:29:40,169 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 26 [2020-07-20 14:29:40,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:40,169 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-07-20 14:29:40,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 14:29:40,170 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-07-20 14:29:40,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 14:29:40,171 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:40,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:40,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:40,386 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:40,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:40,387 INFO L82 PathProgramCache]: Analyzing trace with hash 406230933, now seen corresponding path program 1 times [2020-07-20 14:29:40,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:40,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753660036] [2020-07-20 14:29:40,389 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:40,436 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:40,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:40,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 14:29:40,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:40,463 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:40,465 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:40,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:40,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:29:40,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753660036] [2020-07-20 14:29:40,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:29:40,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 14:29:40,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492053714] [2020-07-20 14:29:40,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 14:29:40,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:40,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 14:29:40,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 14:29:40,475 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 4 states. [2020-07-20 14:29:40,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:40,570 INFO L93 Difference]: Finished difference Result 124 states and 130 transitions. [2020-07-20 14:29:40,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:29:40,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-07-20 14:29:40,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:40,572 INFO L225 Difference]: With dead ends: 124 [2020-07-20 14:29:40,573 INFO L226 Difference]: Without dead ends: 122 [2020-07-20 14:29:40,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:29:40,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-20 14:29:40,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 79. [2020-07-20 14:29:40,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-20 14:29:40,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2020-07-20 14:29:40,582 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 26 [2020-07-20 14:29:40,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:40,583 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2020-07-20 14:29:40,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 14:29:40,583 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2020-07-20 14:29:40,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 14:29:40,584 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:40,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:40,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:40,800 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:40,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:40,800 INFO L82 PathProgramCache]: Analyzing trace with hash -407487796, now seen corresponding path program 1 times [2020-07-20 14:29:40,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:40,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10302503] [2020-07-20 14:29:40,801 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:40,845 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:40,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:40,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 14:29:40,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:40,872 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 14:29:40,872 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:40,879 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:40,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:40,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:29:40,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10302503] [2020-07-20 14:29:40,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:29:40,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:29:40,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837480475] [2020-07-20 14:29:40,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:29:40,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:40,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:29:40,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:29:40,900 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 5 states. [2020-07-20 14:29:41,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:41,060 INFO L93 Difference]: Finished difference Result 121 states and 127 transitions. [2020-07-20 14:29:41,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:29:41,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-20 14:29:41,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:41,061 INFO L225 Difference]: With dead ends: 121 [2020-07-20 14:29:41,062 INFO L226 Difference]: Without dead ends: 119 [2020-07-20 14:29:41,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:29:41,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-07-20 14:29:41,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 77. [2020-07-20 14:29:41,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-20 14:29:41,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-07-20 14:29:41,072 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 27 [2020-07-20 14:29:41,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:41,073 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-07-20 14:29:41,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:29:41,073 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-07-20 14:29:41,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 14:29:41,076 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:41,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:41,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:41,278 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:41,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:41,278 INFO L82 PathProgramCache]: Analyzing trace with hash -291739827, now seen corresponding path program 1 times [2020-07-20 14:29:41,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:41,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194458517] [2020-07-20 14:29:41,279 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:41,328 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:41,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:41,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 14:29:41,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:41,348 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 14:29:41,349 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:41,353 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:41,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:41,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:29:41,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194458517] [2020-07-20 14:29:41,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:29:41,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:29:41,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058155191] [2020-07-20 14:29:41,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:29:41,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:41,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:29:41,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:29:41,363 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 5 states. [2020-07-20 14:29:41,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:41,469 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-07-20 14:29:41,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:29:41,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-20 14:29:41,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:41,471 INFO L225 Difference]: With dead ends: 77 [2020-07-20 14:29:41,471 INFO L226 Difference]: Without dead ends: 75 [2020-07-20 14:29:41,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:29:41,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-07-20 14:29:41,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-07-20 14:29:41,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-20 14:29:41,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-07-20 14:29:41,478 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 27 [2020-07-20 14:29:41,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:41,478 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-07-20 14:29:41,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:29:41,478 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-07-20 14:29:41,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 14:29:41,479 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:41,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:41,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:41,693 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:41,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:41,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1188998893, now seen corresponding path program 1 times [2020-07-20 14:29:41,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:41,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594782582] [2020-07-20 14:29:41,695 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:41,736 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 14:29:41,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:41,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 14:29:41,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:41,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:41,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:29:41,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594782582] [2020-07-20 14:29:41,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:29:41,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:29:41,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598247528] [2020-07-20 14:29:41,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:29:41,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:41,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:29:41,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:29:41,753 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 3 states. [2020-07-20 14:29:41,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:41,810 INFO L93 Difference]: Finished difference Result 115 states and 121 transitions. [2020-07-20 14:29:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:29:41,815 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-07-20 14:29:41,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:41,816 INFO L225 Difference]: With dead ends: 115 [2020-07-20 14:29:41,816 INFO L226 Difference]: Without dead ends: 75 [2020-07-20 14:29:41,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:29:41,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-07-20 14:29:41,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-07-20 14:29:41,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-20 14:29:41,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-07-20 14:29:41,822 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 29 [2020-07-20 14:29:41,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:41,823 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-07-20 14:29:41,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:29:41,823 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-07-20 14:29:41,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 14:29:41,824 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:41,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:42,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:42,039 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:42,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:42,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1640998784, now seen corresponding path program 1 times [2020-07-20 14:29:42,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:42,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254084033] [2020-07-20 14:29:42,041 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:42,079 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:42,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:42,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:29:42,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:42,098 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:42,100 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 14:29:42,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:42,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:29:42,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254084033] [2020-07-20 14:29:42,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:29:42,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 14:29:42,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444986008] [2020-07-20 14:29:42,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 14:29:42,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:42,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 14:29:42,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 14:29:42,115 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 4 states. [2020-07-20 14:29:42,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:42,188 INFO L93 Difference]: Finished difference Result 114 states and 118 transitions. [2020-07-20 14:29:42,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:29:42,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-07-20 14:29:42,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:42,190 INFO L225 Difference]: With dead ends: 114 [2020-07-20 14:29:42,190 INFO L226 Difference]: Without dead ends: 112 [2020-07-20 14:29:42,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:29:42,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-07-20 14:29:42,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 78. [2020-07-20 14:29:42,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-07-20 14:29:42,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2020-07-20 14:29:42,196 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 30 [2020-07-20 14:29:42,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:42,197 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2020-07-20 14:29:42,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 14:29:42,197 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2020-07-20 14:29:42,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 14:29:42,198 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:42,198 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:42,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:42,412 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:42,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:42,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1892106755, now seen corresponding path program 1 times [2020-07-20 14:29:42,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:42,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199320978] [2020-07-20 14:29:42,414 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:42,449 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:42,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:42,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 14:29:42,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:42,480 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:42,482 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:42,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 14:29:42,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:29:42,502 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:29:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 14:29:42,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199320978] [2020-07-20 14:29:42,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:29:42,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-07-20 14:29:42,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900634101] [2020-07-20 14:29:42,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:29:42,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:42,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:29:42,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:29:42,526 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 5 states. [2020-07-20 14:29:42,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:42,627 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2020-07-20 14:29:42,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:29:42,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-20 14:29:42,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:42,628 INFO L225 Difference]: With dead ends: 113 [2020-07-20 14:29:42,629 INFO L226 Difference]: Without dead ends: 111 [2020-07-20 14:29:42,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:29:42,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-07-20 14:29:42,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 75. [2020-07-20 14:29:42,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-20 14:29:42,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-07-20 14:29:42,635 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 30 [2020-07-20 14:29:42,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:42,635 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-07-20 14:29:42,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:29:42,635 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-07-20 14:29:42,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 14:29:42,636 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:42,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:42,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:42,844 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:42,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:42,845 INFO L82 PathProgramCache]: Analyzing trace with hash 668648404, now seen corresponding path program 1 times [2020-07-20 14:29:42,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:42,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566493712] [2020-07-20 14:29:42,847 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:42,889 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:42,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:42,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 14:29:42,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:42,901 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:42,903 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:42,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:29:42,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566493712] [2020-07-20 14:29:42,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:29:42,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:29:42,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755648252] [2020-07-20 14:29:42,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:29:42,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:42,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:29:42,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:29:42,912 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 5 states. [2020-07-20 14:29:42,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:42,968 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2020-07-20 14:29:42,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:29:42,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-07-20 14:29:42,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:42,970 INFO L225 Difference]: With dead ends: 75 [2020-07-20 14:29:42,970 INFO L226 Difference]: Without dead ends: 73 [2020-07-20 14:29:42,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:29:42,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-20 14:29:42,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-07-20 14:29:42,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-07-20 14:29:42,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2020-07-20 14:29:42,976 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 31 [2020-07-20 14:29:42,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:42,976 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2020-07-20 14:29:42,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:29:42,976 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2020-07-20 14:29:42,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 14:29:42,977 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:42,977 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:43,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:43,189 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:43,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:43,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1470784207, now seen corresponding path program 1 times [2020-07-20 14:29:43,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:43,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882525541] [2020-07-20 14:29:43,191 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:43,236 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:43,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:43,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 14:29:43,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:43,269 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:43,271 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:43,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 14:29:43,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:29:43,287 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:29:43,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 14:29:43,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882525541] [2020-07-20 14:29:43,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:29:43,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-07-20 14:29:43,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848376370] [2020-07-20 14:29:43,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:29:43,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:43,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:29:43,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:29:43,318 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 5 states. [2020-07-20 14:29:43,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:43,390 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2020-07-20 14:29:43,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:29:43,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-07-20 14:29:43,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:43,392 INFO L225 Difference]: With dead ends: 74 [2020-07-20 14:29:43,392 INFO L226 Difference]: Without dead ends: 72 [2020-07-20 14:29:43,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:29:43,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-07-20 14:29:43,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-07-20 14:29:43,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-07-20 14:29:43,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2020-07-20 14:29:43,398 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 31 [2020-07-20 14:29:43,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:43,398 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2020-07-20 14:29:43,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:29:43,399 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2020-07-20 14:29:43,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-20 14:29:43,399 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:43,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:43,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:43,610 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:43,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:43,611 INFO L82 PathProgramCache]: Analyzing trace with hash -350608983, now seen corresponding path program 1 times [2020-07-20 14:29:43,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:43,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573347736] [2020-07-20 14:29:43,612 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:43,648 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:43,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:43,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 14:29:43,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:43,676 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:43,678 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 14:29:43,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:43,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:29:43,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573347736] [2020-07-20 14:29:43,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:29:43,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:29:43,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750651059] [2020-07-20 14:29:43,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:29:43,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:43,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:29:43,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:29:43,688 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand 5 states. [2020-07-20 14:29:43,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:43,760 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2020-07-20 14:29:43,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:29:43,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-07-20 14:29:43,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:43,761 INFO L225 Difference]: With dead ends: 72 [2020-07-20 14:29:43,761 INFO L226 Difference]: Without dead ends: 70 [2020-07-20 14:29:43,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:29:43,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-20 14:29:43,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-07-20 14:29:43,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-20 14:29:43,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-07-20 14:29:43,767 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 34 [2020-07-20 14:29:43,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:43,767 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-07-20 14:29:43,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:29:43,767 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-07-20 14:29:43,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-20 14:29:43,768 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:43,768 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:43,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:43,979 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:43,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:43,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1120926823, now seen corresponding path program 1 times [2020-07-20 14:29:43,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:43,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60166266] [2020-07-20 14:29:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:44,018 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:44,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:44,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 14:29:44,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:44,049 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:44,053 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 14:29:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 14:29:44,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:29:44,080 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:29:44,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 14:29:44,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60166266] [2020-07-20 14:29:44,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:29:44,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-07-20 14:29:44,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546282137] [2020-07-20 14:29:44,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:29:44,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:44,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:29:44,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:29:44,108 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 5 states. [2020-07-20 14:29:44,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:44,184 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2020-07-20 14:29:44,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:29:44,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-07-20 14:29:44,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:44,186 INFO L225 Difference]: With dead ends: 70 [2020-07-20 14:29:44,186 INFO L226 Difference]: Without dead ends: 68 [2020-07-20 14:29:44,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:29:44,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-20 14:29:44,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2020-07-20 14:29:44,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-20 14:29:44,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2020-07-20 14:29:44,195 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 34 [2020-07-20 14:29:44,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:44,195 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2020-07-20 14:29:44,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:29:44,196 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2020-07-20 14:29:44,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-20 14:29:44,197 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:44,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:44,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:44,398 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:44,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:44,399 INFO L82 PathProgramCache]: Analyzing trace with hash 2016026591, now seen corresponding path program 1 times [2020-07-20 14:29:44,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:44,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13172662] [2020-07-20 14:29:44,399 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:44,450 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:44,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:44,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 14:29:44,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:44,467 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 14:29:44,468 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:44,480 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:44,481 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:44,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:44,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:29:44,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13172662] [2020-07-20 14:29:44,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:29:44,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 14:29:44,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367909118] [2020-07-20 14:29:44,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:29:44,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:44,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:29:44,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:29:44,491 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 6 states. [2020-07-20 14:29:44,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:44,606 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2020-07-20 14:29:44,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:29:44,607 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-07-20 14:29:44,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:44,608 INFO L225 Difference]: With dead ends: 71 [2020-07-20 14:29:44,608 INFO L226 Difference]: Without dead ends: 69 [2020-07-20 14:29:44,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-07-20 14:29:44,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-20 14:29:44,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 58. [2020-07-20 14:29:44,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-07-20 14:29:44,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-07-20 14:29:44,612 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 35 [2020-07-20 14:29:44,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:44,613 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-07-20 14:29:44,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:29:44,613 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-07-20 14:29:44,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 14:29:44,614 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:44,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:44,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:44,816 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:44,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:44,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1371399406, now seen corresponding path program 1 times [2020-07-20 14:29:44,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:44,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217934643] [2020-07-20 14:29:44,818 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:44,876 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:44,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:44,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 14:29:44,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:44,891 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 14:29:44,892 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:44,896 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:44,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:44,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:29:44,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217934643] [2020-07-20 14:29:44,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:29:44,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:29:44,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126327786] [2020-07-20 14:29:44,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:29:44,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:44,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:29:44,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:29:44,920 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 5 states. [2020-07-20 14:29:45,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:45,055 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2020-07-20 14:29:45,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 14:29:45,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-07-20 14:29:45,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:45,057 INFO L225 Difference]: With dead ends: 93 [2020-07-20 14:29:45,057 INFO L226 Difference]: Without dead ends: 91 [2020-07-20 14:29:45,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:29:45,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-07-20 14:29:45,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 61. [2020-07-20 14:29:45,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-20 14:29:45,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-07-20 14:29:45,064 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 38 [2020-07-20 14:29:45,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:45,065 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-07-20 14:29:45,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:29:45,065 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-07-20 14:29:45,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-07-20 14:29:45,066 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:45,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:45,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:45,267 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:45,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:45,267 INFO L82 PathProgramCache]: Analyzing trace with hash 436294569, now seen corresponding path program 1 times [2020-07-20 14:29:45,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:45,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984007185] [2020-07-20 14:29:45,268 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:45,321 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:45,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:45,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 14:29:45,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:45,341 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 14:29:45,342 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:45,346 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:45,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:45,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:29:45,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984007185] [2020-07-20 14:29:45,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:29:45,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:29:45,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275560737] [2020-07-20 14:29:45,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:29:45,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:45,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:29:45,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:29:45,357 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 5 states. [2020-07-20 14:29:45,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:45,439 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2020-07-20 14:29:45,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:29:45,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-07-20 14:29:45,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:45,441 INFO L225 Difference]: With dead ends: 61 [2020-07-20 14:29:45,441 INFO L226 Difference]: Without dead ends: 59 [2020-07-20 14:29:45,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:29:45,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-07-20 14:29:45,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-07-20 14:29:45,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-20 14:29:45,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2020-07-20 14:29:45,447 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 39 [2020-07-20 14:29:45,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:45,447 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2020-07-20 14:29:45,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:29:45,448 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2020-07-20 14:29:45,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-20 14:29:45,448 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:45,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:45,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:45,659 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:45,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:45,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1627614740, now seen corresponding path program 1 times [2020-07-20 14:29:45,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:45,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539505570] [2020-07-20 14:29:45,659 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:45,708 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:45,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:45,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 14:29:45,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:45,723 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:45,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:45,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:29:45,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539505570] [2020-07-20 14:29:45,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:29:45,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 14:29:45,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011441274] [2020-07-20 14:29:45,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 14:29:45,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:45,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 14:29:45,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 14:29:45,732 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 4 states. [2020-07-20 14:29:45,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:45,759 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2020-07-20 14:29:45,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:29:45,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-07-20 14:29:45,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:45,760 INFO L225 Difference]: With dead ends: 70 [2020-07-20 14:29:45,760 INFO L226 Difference]: Without dead ends: 68 [2020-07-20 14:29:45,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:29:45,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-20 14:29:45,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2020-07-20 14:29:45,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-20 14:29:45,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-07-20 14:29:45,765 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 41 [2020-07-20 14:29:45,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:45,765 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-07-20 14:29:45,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 14:29:45,765 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-07-20 14:29:45,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-20 14:29:45,766 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:45,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:45,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:45,977 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:45,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:45,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1083553822, now seen corresponding path program 1 times [2020-07-20 14:29:45,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:45,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635405924] [2020-07-20 14:29:45,978 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:46,023 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:46,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:46,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 14:29:46,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:46,044 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:46,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:46,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:29:46,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635405924] [2020-07-20 14:29:46,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:29:46,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:29:46,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551820822] [2020-07-20 14:29:46,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:29:46,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:46,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:29:46,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:29:46,053 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 5 states. [2020-07-20 14:29:46,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:46,078 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2020-07-20 14:29:46,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:29:46,078 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-07-20 14:29:46,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:46,079 INFO L225 Difference]: With dead ends: 66 [2020-07-20 14:29:46,079 INFO L226 Difference]: Without dead ends: 64 [2020-07-20 14:29:46,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:29:46,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-20 14:29:46,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2020-07-20 14:29:46,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-20 14:29:46,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-07-20 14:29:46,085 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 42 [2020-07-20 14:29:46,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:46,085 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-07-20 14:29:46,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:29:46,085 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-07-20 14:29:46,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-20 14:29:46,086 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:46,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:46,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:46,296 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:46,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:46,296 INFO L82 PathProgramCache]: Analyzing trace with hash -769566670, now seen corresponding path program 1 times [2020-07-20 14:29:46,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:46,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174286740] [2020-07-20 14:29:46,297 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:46,336 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:46,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:46,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 14:29:46,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:46,352 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 14:29:46,352 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:46,364 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:46,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:46,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:29:46,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174286740] [2020-07-20 14:29:46,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:29:46,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:29:46,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267028888] [2020-07-20 14:29:46,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:29:46,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:46,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:29:46,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:29:46,378 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 5 states. [2020-07-20 14:29:46,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:46,532 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2020-07-20 14:29:46,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 14:29:46,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-07-20 14:29:46,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:46,534 INFO L225 Difference]: With dead ends: 76 [2020-07-20 14:29:46,534 INFO L226 Difference]: Without dead ends: 74 [2020-07-20 14:29:46,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:29:46,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-20 14:29:46,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 53. [2020-07-20 14:29:46,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-20 14:29:46,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-07-20 14:29:46,542 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 43 [2020-07-20 14:29:46,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:46,542 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-07-20 14:29:46,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:29:46,542 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-07-20 14:29:46,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-20 14:29:46,543 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:46,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:46,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:46,755 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:46,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:46,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1913240228, now seen corresponding path program 1 times [2020-07-20 14:29:46,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:46,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798286652] [2020-07-20 14:29:46,757 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:46,815 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:46,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:46,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 14:29:46,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:46,837 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 14:29:46,838 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:46,844 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:46,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:46,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:29:46,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798286652] [2020-07-20 14:29:46,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:29:46,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:29:46,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194383323] [2020-07-20 14:29:46,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:29:46,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:46,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:29:46,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:29:46,852 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-07-20 14:29:46,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:46,953 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-07-20 14:29:46,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:29:46,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-07-20 14:29:46,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:46,957 INFO L225 Difference]: With dead ends: 65 [2020-07-20 14:29:46,957 INFO L226 Difference]: Without dead ends: 63 [2020-07-20 14:29:46,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:29:46,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-20 14:29:46,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2020-07-20 14:29:46,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-07-20 14:29:46,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-07-20 14:29:46,962 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 44 [2020-07-20 14:29:46,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:46,962 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-07-20 14:29:46,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:29:46,962 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-07-20 14:29:46,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-20 14:29:46,963 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:29:46,963 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:29:47,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:47,164 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:29:47,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:29:47,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1562566919, now seen corresponding path program 1 times [2020-07-20 14:29:47,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:29:47,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633713114] [2020-07-20 14:29:47,166 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:47,213 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:29:47,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:29:47,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 14:29:47,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:29:47,246 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:29:47,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:47,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:29:47,267 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:29:47,280 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:29:47,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:29:47,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633713114] [2020-07-20 14:29:47,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:29:47,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-07-20 14:29:47,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124295943] [2020-07-20 14:29:47,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:29:47,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:29:47,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:29:47,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:29:47,302 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 5 states. [2020-07-20 14:29:47,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:29:47,372 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2020-07-20 14:29:47,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:29:47,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-07-20 14:29:47,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:29:47,372 INFO L225 Difference]: With dead ends: 51 [2020-07-20 14:29:47,373 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 14:29:47,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 77 SyntacticMatches, 7 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:29:47,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 14:29:47,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 14:29:47,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 14:29:47,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 14:29:47,374 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-07-20 14:29:47,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:29:47,375 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 14:29:47,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:29:47,375 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 14:29:47,375 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 14:29:47,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:29:47,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 14:29:47,924 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 96 [2020-07-20 14:29:48,461 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 60 [2020-07-20 14:29:48,625 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 26 [2020-07-20 14:29:48,947 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2020-07-20 14:29:48,951 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:29:48,952 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:29:48,952 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:29:48,952 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:29:48,952 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 14:29:48,952 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:29:48,952 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:29:48,953 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-20 14:29:48,953 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-20 14:29:48,953 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-07-20 14:29:48,953 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-20 14:29:48,953 INFO L268 CegarLoopResult]: For program point L192(lines 192 352) no Hoare annotation was computed. [2020-07-20 14:29:48,953 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 123) no Hoare annotation was computed. [2020-07-20 14:29:48,953 INFO L268 CegarLoopResult]: For program point L382(lines 382 391) no Hoare annotation was computed. [2020-07-20 14:29:48,954 INFO L268 CegarLoopResult]: For program point L93(lines 93 410) no Hoare annotation was computed. [2020-07-20 14:29:48,954 INFO L268 CegarLoopResult]: For program point L27(lines 27 435) no Hoare annotation was computed. [2020-07-20 14:29:48,954 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 437) no Hoare annotation was computed. [2020-07-20 14:29:48,954 INFO L268 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-07-20 14:29:48,954 INFO L264 CegarLoopResult]: At program point L399(lines 129 400) the Hoare annotation is: (let ((.cse6 (+ main_~main__cp~0 1))) (let ((.cse0 (<= 1 main_~__VERIFIER_assert__cond~1)) (.cse1 (<= 0 main_~main__scheme~0)) (.cse2 (<= .cse6 main_~main__urilen~0)) (.cse3 (= 1 main_~__VERIFIER_assert__cond~3)) (.cse4 (not (= 0 main_~main__scheme~0))) (.cse5 (<= 1 main_~main__cp~0)) (.cse7 (<= 1 main_~__VERIFIER_assert__cond~2)) (.cse8 (<= 1 main_~__VERIFIER_assert__cond~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= .cse6 main_~main__urilen~0) .cse7 .cse8) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse7 .cse8 (= 1 main_~__VERIFIER_assert__cond~1))))) [2020-07-20 14:29:48,954 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 253) no Hoare annotation was computed. [2020-07-20 14:29:48,954 INFO L268 CegarLoopResult]: For program point L102(lines 102 409) no Hoare annotation was computed. [2020-07-20 14:29:48,955 INFO L268 CegarLoopResult]: For program point L69(lines 69 414) no Hoare annotation was computed. [2020-07-20 14:29:48,955 INFO L264 CegarLoopResult]: At program point L325(lines 260 326) the Hoare annotation is: (and (= main_~__VERIFIER_assert__cond~10 1) (let ((.cse0 (<= 0 main_~main__scheme~0)) (.cse1 (= 1 main_~__VERIFIER_assert__cond~9)) (.cse2 (= 1 main_~__VERIFIER_assert__cond~3)) (.cse3 (<= 1 main_~__VERIFIER_assert__cond~4)) (.cse4 (<= 1 main_~__VERIFIER_assert__cond~0)) (.cse5 (= main_~__VERIFIER_assert__cond~11 1)) (.cse6 (= 1 main_~__VERIFIER_assert__cond~1)) (.cse7 (<= 1 main_~__VERIFIER_assert__cond~6)) (.cse8 (<= 2 main_~main__cp~0)) (.cse9 (= 1 main_~__VERIFIER_assert__cond~5)) (.cse10 (<= 1 main_~__VERIFIER_assert__cond~8)) (.cse11 (not (= 0 main_~main__scheme~0))) (.cse12 (<= 1 main_~__VERIFIER_assert__cond~7)) (.cse13 (<= 1 main_~__VERIFIER_assert__cond~2)) (.cse14 (<= 1 main_~__VERIFIER_assert__cond~9))) (or (and .cse0 .cse1 .cse2 .cse3 (<= 1 main_~__VERIFIER_assert__cond~12) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 (< (+ main_~main__c~0 1) main_~main__tokenlen~0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14))) (<= 0 main_~main__c~0) (< main_~main__cp~0 main_~main__urilen~0) (not (= (+ main_~main__cp~0 1) main_~main__urilen~0))) [2020-07-20 14:29:48,955 INFO L268 CegarLoopResult]: For program point L292(lines 292 316) no Hoare annotation was computed. [2020-07-20 14:29:48,955 INFO L268 CegarLoopResult]: For program point L160(lines 160 357) no Hoare annotation was computed. [2020-07-20 14:29:48,955 INFO L268 CegarLoopResult]: For program point L61(lines 61 420) no Hoare annotation was computed. [2020-07-20 14:29:48,955 INFO L268 CegarLoopResult]: For program point L251(lines 251 327) no Hoare annotation was computed. [2020-07-20 14:29:48,955 INFO L268 CegarLoopResult]: For program point L185(lines 185 353) no Hoare annotation was computed. [2020-07-20 14:29:48,955 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-07-20 14:29:48,955 INFO L264 CegarLoopResult]: At program point L408(lines 102 409) the Hoare annotation is: (<= 1 main_~__VERIFIER_assert__cond~0) [2020-07-20 14:29:48,955 INFO L268 CegarLoopResult]: For program point L210(lines 210 344) no Hoare annotation was computed. [2020-07-20 14:29:48,955 INFO L268 CegarLoopResult]: For program point L111(line 111) no Hoare annotation was computed. [2020-07-20 14:29:48,956 INFO L268 CegarLoopResult]: For program point L45(lines 45 432) no Hoare annotation was computed. [2020-07-20 14:29:48,956 INFO L268 CegarLoopResult]: For program point L268(lines 268 320) no Hoare annotation was computed. [2020-07-20 14:29:48,956 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 294) no Hoare annotation was computed. [2020-07-20 14:29:48,957 INFO L268 CegarLoopResult]: For program point L202(lines 202 351) no Hoare annotation was computed. [2020-07-20 14:29:48,957 INFO L268 CegarLoopResult]: For program point L260(lines 260 326) no Hoare annotation was computed. [2020-07-20 14:29:48,957 INFO L268 CegarLoopResult]: For program point L384(line 384) no Hoare annotation was computed. [2020-07-20 14:29:48,957 INFO L268 CegarLoopResult]: For program point L95(line 95) no Hoare annotation was computed. [2020-07-20 14:29:48,957 INFO L268 CegarLoopResult]: For program point L153(lines 153 358) no Hoare annotation was computed. [2020-07-20 14:29:48,957 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 155) no Hoare annotation was computed. [2020-07-20 14:29:48,957 INFO L268 CegarLoopResult]: For program point L21(lines 21 436) no Hoare annotation was computed. [2020-07-20 14:29:48,957 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 437) no Hoare annotation was computed. [2020-07-20 14:29:48,957 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 282) no Hoare annotation was computed. [2020-07-20 14:29:48,957 INFO L268 CegarLoopResult]: For program point L294(line 294) no Hoare annotation was computed. [2020-07-20 14:29:48,957 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2020-07-20 14:29:48,957 INFO L268 CegarLoopResult]: For program point L63(lines 63 415) no Hoare annotation was computed. [2020-07-20 14:29:48,958 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 437) the Hoare annotation is: true [2020-07-20 14:29:48,958 INFO L268 CegarLoopResult]: For program point L253(line 253) no Hoare annotation was computed. [2020-07-20 14:29:48,958 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-20 14:29:48,958 INFO L268 CegarLoopResult]: For program point L121(lines 121 401) no Hoare annotation was computed. [2020-07-20 14:29:48,958 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-07-20 14:29:48,958 INFO L268 CegarLoopResult]: For program point L270(line 270) no Hoare annotation was computed. [2020-07-20 14:29:48,958 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 212) no Hoare annotation was computed. [2020-07-20 14:29:48,958 INFO L268 CegarLoopResult]: For program point L39(lines 39 433) no Hoare annotation was computed. [2020-07-20 14:29:48,958 INFO L268 CegarLoopResult]: For program point mainErr16ASSERT_VIOLATIONERROR_FUNCTION(line 372) no Hoare annotation was computed. [2020-07-20 14:29:48,958 INFO L268 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-07-20 14:29:48,958 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 187) no Hoare annotation was computed. [2020-07-20 14:29:48,958 INFO L268 CegarLoopResult]: For program point L370(lines 370 393) no Hoare annotation was computed. [2020-07-20 14:29:48,959 INFO L268 CegarLoopResult]: For program point L81(lines 81 412) no Hoare annotation was computed. [2020-07-20 14:29:48,959 INFO L268 CegarLoopResult]: For program point L304(lines 304 314) no Hoare annotation was computed. [2020-07-20 14:29:48,959 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 306) no Hoare annotation was computed. [2020-07-20 14:29:48,959 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 111) no Hoare annotation was computed. [2020-07-20 14:29:48,959 INFO L268 CegarLoopResult]: For program point L222(lines 222 342) no Hoare annotation was computed. [2020-07-20 14:29:48,959 INFO L268 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2020-07-20 14:29:48,959 INFO L268 CegarLoopResult]: For program point L57(lines 57 430) no Hoare annotation was computed. [2020-07-20 14:29:48,959 INFO L264 CegarLoopResult]: At program point L313(lines 228 342) the Hoare annotation is: (let ((.cse16 (+ main_~main__cp~0 1))) (let ((.cse1 (<= 0 main_~main__scheme~0)) (.cse2 (= 1 main_~__VERIFIER_assert__cond~9)) (.cse3 (= 1 main_~__VERIFIER_assert__cond~3)) (.cse4 (<= 1 main_~__VERIFIER_assert__cond~4)) (.cse5 (<= 1 main_~__VERIFIER_assert__cond~0)) (.cse6 (= 1 main_~__VERIFIER_assert__cond~1)) (.cse7 (<= 1 main_~__VERIFIER_assert__cond~6)) (.cse8 (<= 2 main_~main__cp~0)) (.cse9 (= 1 main_~__VERIFIER_assert__cond~5)) (.cse10 (<= .cse16 main_~main__urilen~0)) (.cse0 (<= 0 main_~main__c~0)) (.cse11 (<= 1 main_~__VERIFIER_assert__cond~8)) (.cse12 (not (= 0 main_~main__scheme~0))) (.cse13 (<= 1 main_~__VERIFIER_assert__cond~7)) (.cse14 (<= 1 main_~__VERIFIER_assert__cond~2))) (or (and (<= 1 main_~__VERIFIER_assert__cond~10) .cse0 (let ((.cse15 (<= 1 main_~__VERIFIER_assert__cond~9))) (or (and .cse1 .cse2 (< (+ main_~main__c~0 1) main_~main__tokenlen~0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15) (and .cse1 .cse2 .cse3 .cse4 (<= 1 main_~__VERIFIER_assert__cond~12) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15))) (= main_~__VERIFIER_assert__cond~11 1)) (and .cse1 .cse2 (not (= .cse16 main_~main__urilen~0)) .cse3 .cse4 (= 1 main_~__VERIFIER_assert__cond~8) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse0 .cse11 .cse12 .cse13 .cse14)))) [2020-07-20 14:29:48,959 INFO L268 CegarLoopResult]: For program point L280(lines 280 318) no Hoare annotation was computed. [2020-07-20 14:29:48,959 INFO L268 CegarLoopResult]: For program point L239(lines 239 329) no Hoare annotation was computed. [2020-07-20 14:29:48,960 INFO L268 CegarLoopResult]: For program point L173(lines 173 355) no Hoare annotation was computed. [2020-07-20 14:29:48,960 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 241) no Hoare annotation was computed. [2020-07-20 14:29:48,960 INFO L268 CegarLoopResult]: For program point L33(lines 33 434) no Hoare annotation was computed. [2020-07-20 14:29:48,960 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 95) no Hoare annotation was computed. [2020-07-20 14:29:48,960 INFO L268 CegarLoopResult]: For program point L372(line 372) no Hoare annotation was computed. [2020-07-20 14:29:48,960 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-07-20 14:29:48,960 INFO L268 CegarLoopResult]: For program point L306(line 306) no Hoare annotation was computed. [2020-07-20 14:29:48,960 INFO L268 CegarLoopResult]: For program point L141(lines 141 360) no Hoare annotation was computed. [2020-07-20 14:29:48,960 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 224) no Hoare annotation was computed. [2020-07-20 14:29:48,960 INFO L268 CegarLoopResult]: For program point L232(lines 232 336) no Hoare annotation was computed. [2020-07-20 14:29:48,960 INFO L268 CegarLoopResult]: For program point mainErr17ASSERT_VIOLATIONERROR_FUNCTION(line 384) no Hoare annotation was computed. [2020-07-20 14:29:48,960 INFO L268 CegarLoopResult]: For program point L133(lines 133 395) no Hoare annotation was computed. [2020-07-20 14:29:48,960 INFO L268 CegarLoopResult]: For program point L224(line 224) no Hoare annotation was computed. [2020-07-20 14:29:48,961 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 143) no Hoare annotation was computed. [2020-07-20 14:29:48,961 INFO L268 CegarLoopResult]: For program point L59(lines 59 425) no Hoare annotation was computed. [2020-07-20 14:29:48,961 INFO L268 CegarLoopResult]: For program point L282(line 282) no Hoare annotation was computed. [2020-07-20 14:29:48,961 INFO L268 CegarLoopResult]: For program point L51(lines 51 431) no Hoare annotation was computed. [2020-07-20 14:29:48,961 INFO L268 CegarLoopResult]: For program point L241(line 241) no Hoare annotation was computed. [2020-07-20 14:29:48,961 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 270) no Hoare annotation was computed. [2020-07-20 14:29:48,961 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-20 14:29:48,961 INFO L268 CegarLoopResult]: For program point L109(lines 109 403) no Hoare annotation was computed. [2020-07-20 14:29:48,961 INFO L264 CegarLoopResult]: At program point L390(lines 127 401) the Hoare annotation is: (and (<= 0 main_~main__scheme~0) (< main_~main__cp~0 main_~main__urilen~0) (= 1 main_~__VERIFIER_assert__cond~3) (not (= 0 main_~main__scheme~0)) (<= 1 main_~main__cp~0) (<= 1 main_~__VERIFIER_assert__cond~2) (<= 1 main_~__VERIFIER_assert__cond~0) (= 1 main_~__VERIFIER_assert__cond~1)) [2020-07-20 14:29:48,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:29:48 BoogieIcfgContainer [2020-07-20 14:29:48,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:29:48,995 INFO L168 Benchmark]: Toolchain (without parser) took 12140.44 ms. Allocated memory was 136.8 MB in the beginning and 303.0 MB in the end (delta: 166.2 MB). Free memory was 100.4 MB in the beginning and 180.0 MB in the end (delta: -79.5 MB). Peak memory consumption was 157.4 MB. Max. memory is 7.1 GB. [2020-07-20 14:29:48,997 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 118.7 MB in the beginning and 118.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 14:29:48,997 INFO L168 Benchmark]: CACSL2BoogieTranslator took 438.50 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 100.0 MB in the beginning and 179.3 MB in the end (delta: -79.3 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2020-07-20 14:29:48,998 INFO L168 Benchmark]: Boogie Preprocessor took 62.79 ms. Allocated memory is still 200.8 MB. Free memory was 179.3 MB in the beginning and 176.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-20 14:29:48,998 INFO L168 Benchmark]: RCFGBuilder took 522.75 ms. Allocated memory is still 200.8 MB. Free memory was 176.7 MB in the beginning and 149.7 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-07-20 14:29:48,999 INFO L168 Benchmark]: TraceAbstraction took 11108.90 ms. Allocated memory was 200.8 MB in the beginning and 303.0 MB in the end (delta: 102.2 MB). Free memory was 149.1 MB in the beginning and 180.0 MB in the end (delta: -30.9 MB). Peak memory consumption was 142.1 MB. Max. memory is 7.1 GB. [2020-07-20 14:29:49,002 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 118.7 MB in the beginning and 118.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 438.50 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 100.0 MB in the beginning and 179.3 MB in the end (delta: -79.3 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.79 ms. Allocated memory is still 200.8 MB. Free memory was 179.3 MB in the beginning and 176.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 522.75 ms. Allocated memory is still 200.8 MB. Free memory was 176.7 MB in the beginning and 149.7 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11108.90 ms. Allocated memory was 200.8 MB in the beginning and 303.0 MB in the end (delta: 102.2 MB). Free memory was 149.1 MB in the beginning and 180.0 MB in the end (delta: -30.9 MB). Peak memory consumption was 142.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 83]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 306]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 372]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 187]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 212]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 282]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 224]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 241]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 294]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 270]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 143]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 253]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 384]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 111]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 175]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 155]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 123]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 95]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: ((((((0 <= main__scheme && main__cp < main__urilen) && 1 == __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond - InvariantResult [Line: 102]: Loop Invariant Derived loop invariant: 1 <= __VERIFIER_assert__cond - InvariantResult [Line: 228]: Loop Invariant Derived loop invariant: (((1 <= __VERIFIER_assert__cond && 0 <= main__c) && ((((((((((((((((0 <= main__scheme && 1 == __VERIFIER_assert__cond) && main__c + 1 < main__tokenlen) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 2 <= main__cp) && 1 == __VERIFIER_assert__cond) && main__cp + 1 <= main__urilen) && 1 <= __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) || (((((((((((((((0 <= main__scheme && 1 == __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 2 <= main__cp) && 1 == __VERIFIER_assert__cond) && main__cp + 1 <= main__urilen) && 1 <= __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond))) && __VERIFIER_assert__cond == 1) || ((((((((((((((((0 <= main__scheme && 1 == __VERIFIER_assert__cond) && !(main__cp + 1 == main__urilen)) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 2 <= main__cp) && 1 == __VERIFIER_assert__cond) && main__cp + 1 <= main__urilen) && 0 <= main__c) && 1 <= __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: ((((((((1 <= __VERIFIER_assert__cond && 0 <= main__scheme) && main__cp + 1 <= main__urilen) && 1 == __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= main__cp) && main__cp + 1 == main__urilen) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) || ((((((((1 <= __VERIFIER_assert__cond && 0 <= main__scheme) && main__cp + 1 <= main__urilen) && 1 == __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) - InvariantResult [Line: 260]: Loop Invariant Derived loop invariant: (((__VERIFIER_assert__cond == 1 && ((((((((((((((((0 <= main__scheme && 1 == __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && __VERIFIER_assert__cond == 1) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 2 <= main__cp) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) || (((((((((((((((0 <= main__scheme && 1 == __VERIFIER_assert__cond) && main__c + 1 < main__tokenlen) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && __VERIFIER_assert__cond == 1) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 2 <= main__cp) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond))) && 0 <= main__c) && main__cp < main__urilen) && !(main__cp + 1 == main__urilen) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 91 locations, 18 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.6s, OverallIterations: 23, TraceHistogramMax: 2, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1355 SDtfs, 2050 SDslu, 1550 SDs, 0 SdLazy, 1004 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 892 GetRequests, 769 SyntacticMatches, 23 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 23 MinimizatonAttempts, 361 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 393 HoareAnnotationTreeSize, 9 FomulaSimplifications, 845117 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 9 FomulaSimplificationsInter, 69114 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 735 NumberOfCodeBlocks, 722 NumberOfCodeBlocksAsserted, 90 NumberOfCheckSat, 847 ConstructedInterpolants, 0 QuantifiedInterpolants, 73332 SizeOfPredicates, 120 NumberOfNonLiveVariables, 2461 ConjunctsInSsa, 177 ConjunctsInUnsatCore, 27 InterpolantComputations, 19 PerfectInterpolantSequences, 6/20 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...