/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -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 [2020-07-21 16:55:48,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:55:48,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:55:48,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:55:48,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:55:48,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:55:48,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:55:48,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:55:48,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:55:48,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:55:48,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:55:48,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:55:48,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:55:48,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:55:48,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:55:48,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:55:48,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:55:48,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:55:48,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:55:48,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:55:48,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:55:48,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:55:48,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:55:48,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:55:48,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 16:55:48,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:55:48,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:55:48,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:55:48,157 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 16:55:48,196 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:55:48,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:55:48,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:55:48,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:55:48,200 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:55:48,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:55:48,201 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:55:48,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:55:48,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:55:48,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:55:48,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:55:48,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:55:48,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:55:48,202 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:55:48,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:55:48,203 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:55:48,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:55:48,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:55:48,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:55:48,203 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:55:48,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:55:48,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:55:48,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:55:48,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:55:48,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:55:48,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:55:48,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:48,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:55:48,205 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:55:48,205 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 16:55:48,499 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:55:48,521 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:55:48,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:55:48,526 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:55:48,528 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:55:48,530 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2020-07-21 16:55:48,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c09b427ec/7a00c7065aef48cb9e6b6e8370b4f906/FLAGc51c55a09 [2020-07-21 16:55:49,058 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:55:49,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2020-07-21 16:55:49,070 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c09b427ec/7a00c7065aef48cb9e6b6e8370b4f906/FLAGc51c55a09 [2020-07-21 16:55:49,422 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c09b427ec/7a00c7065aef48cb9e6b6e8370b4f906 [2020-07-21 16:55:49,430 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:55:49,433 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:55:49,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:55:49,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:55:49,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:55:49,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:55:49" (1/1) ... [2020-07-21 16:55:49,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19fe720f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:49, skipping insertion in model container [2020-07-21 16:55:49,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:55:49" (1/1) ... [2020-07-21 16:55:49,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:55:49,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:55:49,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:55:49,724 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:55:49,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:55:49,777 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:55:49,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:49 WrapperNode [2020-07-21 16:55:49,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:55:49,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:55:49,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:55:49,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:55:49,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:49" (1/1) ... [2020-07-21 16:55:49,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:49" (1/1) ... [2020-07-21 16:55:49,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:49" (1/1) ... [2020-07-21 16:55:49,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:49" (1/1) ... [2020-07-21 16:55:49,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:49" (1/1) ... [2020-07-21 16:55:49,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:49" (1/1) ... [2020-07-21 16:55:49,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:49" (1/1) ... [2020-07-21 16:55:49,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:55:49,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:55:49,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:55:49,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:55:49,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:55:49,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:55:49,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:55:49,969 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 16:55:49,969 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:55:49,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:55:49,969 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 16:55:49,969 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 16:55:49,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 16:55:49,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 16:55:49,970 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:55:49,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:55:49,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:55:50,407 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:55:50,408 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 16:55:50,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:55:50 BoogieIcfgContainer [2020-07-21 16:55:50,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:55:50,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:55:50,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:55:50,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:55:50,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:55:49" (1/3) ... [2020-07-21 16:55:50,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1775507e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:55:50, skipping insertion in model container [2020-07-21 16:55:50,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:55:49" (2/3) ... [2020-07-21 16:55:50,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1775507e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:55:50, skipping insertion in model container [2020-07-21 16:55:50,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:55:50" (3/3) ... [2020-07-21 16:55:50,420 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i.v+cfa-reducer.c [2020-07-21 16:55:50,428 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:55:50,434 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 18 error locations. [2020-07-21 16:55:50,445 INFO L251 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-07-21 16:55:50,477 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:55:50,477 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:55:50,478 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:55:50,478 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:55:50,478 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:55:50,478 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:55:50,478 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:55:50,478 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:55:50,501 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-07-21 16:55:50,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 16:55:50,508 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:55:50,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:55:50,510 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]=== [2020-07-21 16:55:50,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:55:50,516 INFO L82 PathProgramCache]: Analyzing trace with hash -2019463306, now seen corresponding path program 1 times [2020-07-21 16:55:50,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:55:50,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284026684] [2020-07-21 16:55:50,526 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:55:50,629 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:55:50,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:55:50,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 16:55:50,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:55:50,692 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:50,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:55:50,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:55:50,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284026684] [2020-07-21 16:55:50,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:55:50,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:55:50,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628700731] [2020-07-21 16:55:50,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:55:50,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:55:50,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:55:50,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:55:50,753 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 3 states. [2020-07-21 16:55:50,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:55:50,794 INFO L93 Difference]: Finished difference Result 93 states and 129 transitions. [2020-07-21 16:55:50,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:55:50,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-21 16:55:50,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:55:50,807 INFO L225 Difference]: With dead ends: 93 [2020-07-21 16:55:50,807 INFO L226 Difference]: Without dead ends: 80 [2020-07-21 16:55:50,810 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 [2020-07-21 16:55:50,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-07-21 16:55:50,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-07-21 16:55:50,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-21 16:55:50,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2020-07-21 16:55:50,859 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 19 [2020-07-21 16:55:50,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:55:50,860 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2020-07-21 16:55:50,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:55:50,860 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2020-07-21 16:55:50,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-21 16:55:50,861 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:55:50,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:55:51,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:51,078 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]=== [2020-07-21 16:55:51,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:55:51,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1821150056, now seen corresponding path program 1 times [2020-07-21 16:55:51,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:55:51,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806657702] [2020-07-21 16:55:51,081 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:55:51,159 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:55:51,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:55:51,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 16:55:51,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:55:51,216 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:51,221 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:55:51,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:55:51,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806657702] [2020-07-21 16:55:51,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:55:51,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 16:55:51,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471310072] [2020-07-21 16:55:51,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 16:55:51,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:55:51,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 16:55:51,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:55:51,247 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand 6 states. [2020-07-21 16:55:51,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:55:51,390 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2020-07-21 16:55:51,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 16:55:51,390 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-07-21 16:55:51,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:55:51,392 INFO L225 Difference]: With dead ends: 80 [2020-07-21 16:55:51,393 INFO L226 Difference]: Without dead ends: 78 [2020-07-21 16:55:51,394 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 [2020-07-21 16:55:51,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-21 16:55:51,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-07-21 16:55:51,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-07-21 16:55:51,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2020-07-21 16:55:51,407 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 20 [2020-07-21 16:55:51,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:55:51,408 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2020-07-21 16:55:51,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 16:55:51,408 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2020-07-21 16:55:51,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 16:55:51,409 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:55:51,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:55:51,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:51,623 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]=== [2020-07-21 16:55:51,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:55:51,625 INFO L82 PathProgramCache]: Analyzing trace with hash 2073610827, now seen corresponding path program 1 times [2020-07-21 16:55:51,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:55:51,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746501041] [2020-07-21 16:55:51,626 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:55:51,668 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:55:51,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:55:51,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 16:55:51,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:55:51,707 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:51,709 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:51,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:55:51,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:55:51,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746501041] [2020-07-21 16:55:51,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:55:51,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 16:55:51,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302865236] [2020-07-21 16:55:51,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 16:55:51,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:55:51,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 16:55:51,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 16:55:51,728 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 4 states. [2020-07-21 16:55:51,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:55:51,816 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2020-07-21 16:55:51,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 16:55:51,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-21 16:55:51,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:55:51,818 INFO L225 Difference]: With dead ends: 101 [2020-07-21 16:55:51,818 INFO L226 Difference]: Without dead ends: 99 [2020-07-21 16:55:51,819 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 [2020-07-21 16:55:51,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-07-21 16:55:51,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 76. [2020-07-21 16:55:51,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-21 16:55:51,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2020-07-21 16:55:51,830 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 22 [2020-07-21 16:55:51,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:55:51,831 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2020-07-21 16:55:51,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 16:55:51,831 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2020-07-21 16:55:51,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 16:55:51,832 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:55:51,832 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] [2020-07-21 16:55:52,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:52,048 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]=== [2020-07-21 16:55:52,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:55:52,049 INFO L82 PathProgramCache]: Analyzing trace with hash -142570686, now seen corresponding path program 1 times [2020-07-21 16:55:52,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:55:52,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562252867] [2020-07-21 16:55:52,050 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:55:52,091 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:55:52,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:55:52,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 16:55:52,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:55:52,114 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:52,115 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:52,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:55:52,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:55:52,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562252867] [2020-07-21 16:55:52,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:55:52,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 16:55:52,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376861465] [2020-07-21 16:55:52,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:55:52,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:55:52,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:55:52,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:55:52,127 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 5 states. [2020-07-21 16:55:52,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:55:52,201 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2020-07-21 16:55:52,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 16:55:52,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-07-21 16:55:52,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:55:52,203 INFO L225 Difference]: With dead ends: 76 [2020-07-21 16:55:52,203 INFO L226 Difference]: Without dead ends: 74 [2020-07-21 16:55:52,204 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 [2020-07-21 16:55:52,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-21 16:55:52,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-07-21 16:55:52,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-07-21 16:55:52,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-07-21 16:55:52,212 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 23 [2020-07-21 16:55:52,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:55:52,212 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-07-21 16:55:52,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:55:52,212 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-07-21 16:55:52,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 16:55:52,213 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:55:52,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:55:52,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:52,427 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]=== [2020-07-21 16:55:52,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:55:52,428 INFO L82 PathProgramCache]: Analyzing trace with hash 402497124, now seen corresponding path program 1 times [2020-07-21 16:55:52,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:55:52,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185437803] [2020-07-21 16:55:52,430 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:55:52,469 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:55:52,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:55:52,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 16:55:52,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:55:52,486 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:52,488 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:52,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:55:52,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:55:52,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185437803] [2020-07-21 16:55:52,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:55:52,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 16:55:52,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098699368] [2020-07-21 16:55:52,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 16:55:52,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:55:52,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 16:55:52,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 16:55:52,509 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 4 states. [2020-07-21 16:55:52,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:55:52,668 INFO L93 Difference]: Finished difference Result 158 states and 166 transitions. [2020-07-21 16:55:52,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 16:55:52,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-07-21 16:55:52,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:55:52,671 INFO L225 Difference]: With dead ends: 158 [2020-07-21 16:55:52,671 INFO L226 Difference]: Without dead ends: 156 [2020-07-21 16:55:52,675 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 [2020-07-21 16:55:52,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-07-21 16:55:52,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 77. [2020-07-21 16:55:52,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-21 16:55:52,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-07-21 16:55:52,697 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 26 [2020-07-21 16:55:52,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:55:52,697 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-07-21 16:55:52,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 16:55:52,698 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-07-21 16:55:52,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 16:55:52,701 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:55:52,701 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:55:52,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:52,917 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]=== [2020-07-21 16:55:52,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:55:52,918 INFO L82 PathProgramCache]: Analyzing trace with hash 406230933, now seen corresponding path program 1 times [2020-07-21 16:55:52,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:55:52,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686205618] [2020-07-21 16:55:52,920 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:55:52,958 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:55:52,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:55:52,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 16:55:52,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:55:52,976 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:52,978 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:52,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:55:52,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:55:52,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686205618] [2020-07-21 16:55:52,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:55:52,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 16:55:52,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603131458] [2020-07-21 16:55:52,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 16:55:52,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:55:52,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 16:55:52,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 16:55:52,987 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 4 states. [2020-07-21 16:55:53,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:55:53,057 INFO L93 Difference]: Finished difference Result 124 states and 130 transitions. [2020-07-21 16:55:53,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 16:55:53,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-07-21 16:55:53,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:55:53,059 INFO L225 Difference]: With dead ends: 124 [2020-07-21 16:55:53,060 INFO L226 Difference]: Without dead ends: 122 [2020-07-21 16:55:53,060 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 [2020-07-21 16:55:53,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-21 16:55:53,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 79. [2020-07-21 16:55:53,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-21 16:55:53,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2020-07-21 16:55:53,069 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 26 [2020-07-21 16:55:53,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:55:53,069 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2020-07-21 16:55:53,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 16:55:53,070 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2020-07-21 16:55:53,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 16:55:53,071 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:55:53,071 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] [2020-07-21 16:55:53,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:53,284 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]=== [2020-07-21 16:55:53,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:55:53,285 INFO L82 PathProgramCache]: Analyzing trace with hash -407487796, now seen corresponding path program 1 times [2020-07-21 16:55:53,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:55:53,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095734903] [2020-07-21 16:55:53,287 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:55:53,330 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:55:53,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:55:53,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 16:55:53,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:55:53,363 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 16:55:53,363 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:53,374 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:53,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:55:53,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:55:53,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095734903] [2020-07-21 16:55:53,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:55:53,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 16:55:53,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302366910] [2020-07-21 16:55:53,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:55:53,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:55:53,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:55:53,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:55:53,390 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 5 states. [2020-07-21 16:55:53,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:55:53,528 INFO L93 Difference]: Finished difference Result 121 states and 127 transitions. [2020-07-21 16:55:53,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 16:55:53,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-21 16:55:53,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:55:53,530 INFO L225 Difference]: With dead ends: 121 [2020-07-21 16:55:53,530 INFO L226 Difference]: Without dead ends: 119 [2020-07-21 16:55:53,531 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 [2020-07-21 16:55:53,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-07-21 16:55:53,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 77. [2020-07-21 16:55:53,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-21 16:55:53,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-07-21 16:55:53,550 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 27 [2020-07-21 16:55:53,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:55:53,552 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-07-21 16:55:53,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:55:53,553 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-07-21 16:55:53,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 16:55:53,554 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:55:53,554 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] [2020-07-21 16:55:53,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:53,770 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]=== [2020-07-21 16:55:53,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:55:53,771 INFO L82 PathProgramCache]: Analyzing trace with hash -291739827, now seen corresponding path program 1 times [2020-07-21 16:55:53,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:55:53,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207426949] [2020-07-21 16:55:53,773 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:55:53,822 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:55:53,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:55:53,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 16:55:53,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:55:53,852 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 16:55:53,852 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:53,858 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:53,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:55:53,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:55:53,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207426949] [2020-07-21 16:55:53,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:55:53,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 16:55:53,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844272889] [2020-07-21 16:55:53,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:55:53,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:55:53,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:55:53,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:55:53,867 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 5 states. [2020-07-21 16:55:53,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:55:53,947 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-07-21 16:55:53,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 16:55:53,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-21 16:55:53,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:55:53,949 INFO L225 Difference]: With dead ends: 77 [2020-07-21 16:55:53,949 INFO L226 Difference]: Without dead ends: 75 [2020-07-21 16:55:53,950 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 [2020-07-21 16:55:53,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-07-21 16:55:53,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-07-21 16:55:53,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-21 16:55:53,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-07-21 16:55:53,956 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 27 [2020-07-21 16:55:53,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:55:53,956 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-07-21 16:55:53,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:55:53,956 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-07-21 16:55:53,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-21 16:55:53,957 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:55:53,957 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] [2020-07-21 16:55:54,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:54,170 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]=== [2020-07-21 16:55:54,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:55:54,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1188998893, now seen corresponding path program 1 times [2020-07-21 16:55:54,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:55:54,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949694664] [2020-07-21 16:55:54,172 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:55:54,223 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:55:54,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:55:54,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 16:55:54,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:55:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:55:54,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:55:54,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949694664] [2020-07-21 16:55:54,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:55:54,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:55:54,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183125097] [2020-07-21 16:55:54,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:55:54,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:55:54,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:55:54,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:55:54,242 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 3 states. [2020-07-21 16:55:54,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:55:54,292 INFO L93 Difference]: Finished difference Result 115 states and 121 transitions. [2020-07-21 16:55:54,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:55:54,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-07-21 16:55:54,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:55:54,294 INFO L225 Difference]: With dead ends: 115 [2020-07-21 16:55:54,294 INFO L226 Difference]: Without dead ends: 75 [2020-07-21 16:55:54,295 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 [2020-07-21 16:55:54,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-07-21 16:55:54,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-07-21 16:55:54,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-21 16:55:54,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-07-21 16:55:54,300 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 29 [2020-07-21 16:55:54,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:55:54,301 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-07-21 16:55:54,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:55:54,301 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-07-21 16:55:54,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 16:55:54,302 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:55:54,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:55:54,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:54,514 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]=== [2020-07-21 16:55:54,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:55:54,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1640998784, now seen corresponding path program 1 times [2020-07-21 16:55:54,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:55:54,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196791171] [2020-07-21 16:55:54,515 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:55:54,556 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:55:54,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:55:54,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 16:55:54,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:55:54,584 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:54,586 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 16:55:54,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:55:54,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:55:54,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196791171] [2020-07-21 16:55:54,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:55:54,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 16:55:54,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853831669] [2020-07-21 16:55:54,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:55:54,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:55:54,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:55:54,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:55:54,599 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 5 states. [2020-07-21 16:55:54,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:55:54,680 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2020-07-21 16:55:54,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 16:55:54,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-21 16:55:54,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:55:54,681 INFO L225 Difference]: With dead ends: 76 [2020-07-21 16:55:54,681 INFO L226 Difference]: Without dead ends: 74 [2020-07-21 16:55:54,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-21 16:55:54,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-21 16:55:54,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-07-21 16:55:54,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-07-21 16:55:54,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2020-07-21 16:55:54,687 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 30 [2020-07-21 16:55:54,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:55:54,688 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2020-07-21 16:55:54,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:55:54,688 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2020-07-21 16:55:54,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 16:55:54,689 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:55:54,689 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] [2020-07-21 16:55:54,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:54,902 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]=== [2020-07-21 16:55:54,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:55:54,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1892106755, now seen corresponding path program 1 times [2020-07-21 16:55:54,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:55:54,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305860131] [2020-07-21 16:55:54,905 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:55:54,944 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:55:54,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:55:54,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 16:55:54,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:55:54,977 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:54,979 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:54,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 16:55:54,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:55:54,999 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:55:55,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 16:55:55,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305860131] [2020-07-21 16:55:55,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:55:55,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-07-21 16:55:55,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843732812] [2020-07-21 16:55:55,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:55:55,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:55:55,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:55:55,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:55:55,025 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 5 states. [2020-07-21 16:55:55,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:55:55,135 INFO L93 Difference]: Finished difference Result 111 states and 115 transitions. [2020-07-21 16:55:55,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 16:55:55,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-21 16:55:55,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:55:55,137 INFO L225 Difference]: With dead ends: 111 [2020-07-21 16:55:55,137 INFO L226 Difference]: Without dead ends: 109 [2020-07-21 16:55:55,138 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 [2020-07-21 16:55:55,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-21 16:55:55,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 70. [2020-07-21 16:55:55,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-21 16:55:55,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2020-07-21 16:55:55,144 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 30 [2020-07-21 16:55:55,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:55:55,145 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2020-07-21 16:55:55,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:55:55,145 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2020-07-21 16:55:55,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-21 16:55:55,146 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:55:55,146 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] [2020-07-21 16:55:55,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:55,350 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]=== [2020-07-21 16:55:55,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:55:55,353 INFO L82 PathProgramCache]: Analyzing trace with hash 668648404, now seen corresponding path program 1 times [2020-07-21 16:55:55,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:55:55,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074513938] [2020-07-21 16:55:55,355 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:55:55,389 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:55:55,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:55:55,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 16:55:55,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:55:55,402 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:55,403 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:55,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:55:55,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:55:55,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074513938] [2020-07-21 16:55:55,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:55:55,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 16:55:55,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700686953] [2020-07-21 16:55:55,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:55:55,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:55:55,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:55:55,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:55:55,426 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand 5 states. [2020-07-21 16:55:55,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:55:55,487 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2020-07-21 16:55:55,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 16:55:55,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-07-21 16:55:55,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:55:55,488 INFO L225 Difference]: With dead ends: 70 [2020-07-21 16:55:55,488 INFO L226 Difference]: Without dead ends: 68 [2020-07-21 16:55:55,489 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 [2020-07-21 16:55:55,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-21 16:55:55,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-21 16:55:55,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-21 16:55:55,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2020-07-21 16:55:55,493 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 31 [2020-07-21 16:55:55,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:55:55,493 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2020-07-21 16:55:55,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:55:55,494 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2020-07-21 16:55:55,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-21 16:55:55,494 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:55:55,495 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] [2020-07-21 16:55:55,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:55,705 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]=== [2020-07-21 16:55:55,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:55:55,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1470784207, now seen corresponding path program 1 times [2020-07-21 16:55:55,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:55:55,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869626650] [2020-07-21 16:55:55,707 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:55:55,739 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:55:55,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:55:55,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 16:55:55,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:55:55,769 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:55,771 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:55,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 16:55:55,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:55:55,784 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:55:55,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 16:55:55,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869626650] [2020-07-21 16:55:55,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:55:55,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-07-21 16:55:55,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690555777] [2020-07-21 16:55:55,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:55:55,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:55:55,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:55:55,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:55:55,807 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand 5 states. [2020-07-21 16:55:55,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:55:55,875 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2020-07-21 16:55:55,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 16:55:55,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-07-21 16:55:55,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:55:55,877 INFO L225 Difference]: With dead ends: 69 [2020-07-21 16:55:55,877 INFO L226 Difference]: Without dead ends: 67 [2020-07-21 16:55:55,877 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 [2020-07-21 16:55:55,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-21 16:55:55,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2020-07-21 16:55:55,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-21 16:55:55,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2020-07-21 16:55:55,882 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 31 [2020-07-21 16:55:55,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:55:55,882 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2020-07-21 16:55:55,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:55:55,883 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2020-07-21 16:55:55,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-21 16:55:55,883 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:55:55,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:55:56,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:56,094 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]=== [2020-07-21 16:55:56,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:55:56,095 INFO L82 PathProgramCache]: Analyzing trace with hash -350608983, now seen corresponding path program 1 times [2020-07-21 16:55:56,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:55:56,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996249033] [2020-07-21 16:55:56,096 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:55:56,133 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:55:56,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:55:56,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 16:55:56,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:55:56,166 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:56,168 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 16:55:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:55:56,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:55:56,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996249033] [2020-07-21 16:55:56,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:55:56,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 16:55:56,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825535914] [2020-07-21 16:55:56,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:55:56,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:55:56,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:55:56,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:55:56,182 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand 5 states. [2020-07-21 16:55:56,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:55:56,257 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-07-21 16:55:56,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 16:55:56,257 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-07-21 16:55:56,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:55:56,258 INFO L225 Difference]: With dead ends: 63 [2020-07-21 16:55:56,258 INFO L226 Difference]: Without dead ends: 61 [2020-07-21 16:55:56,259 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 [2020-07-21 16:55:56,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-21 16:55:56,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-07-21 16:55:56,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-21 16:55:56,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2020-07-21 16:55:56,264 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 34 [2020-07-21 16:55:56,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:55:56,264 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2020-07-21 16:55:56,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:55:56,265 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2020-07-21 16:55:56,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-21 16:55:56,265 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:55:56,266 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] [2020-07-21 16:55:56,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:56,478 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]=== [2020-07-21 16:55:56,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:55:56,478 INFO L82 PathProgramCache]: Analyzing trace with hash 2016026591, now seen corresponding path program 1 times [2020-07-21 16:55:56,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:55:56,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794663199] [2020-07-21 16:55:56,480 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:55:56,517 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:55:56,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:55:56,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 16:55:56,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:55:56,538 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 16:55:56,538 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:56,562 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:56,563 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:56,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:55:56,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:55:56,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794663199] [2020-07-21 16:55:56,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:55:56,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 16:55:56,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663176124] [2020-07-21 16:55:56,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 16:55:56,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:55:56,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 16:55:56,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:55:56,580 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 6 states. [2020-07-21 16:55:56,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:55:56,717 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2020-07-21 16:55:56,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 16:55:56,718 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-07-21 16:55:56,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:55:56,719 INFO L225 Difference]: With dead ends: 71 [2020-07-21 16:55:56,720 INFO L226 Difference]: Without dead ends: 69 [2020-07-21 16:55:56,720 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 [2020-07-21 16:55:56,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-21 16:55:56,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 58. [2020-07-21 16:55:56,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-07-21 16:55:56,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-07-21 16:55:56,730 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 35 [2020-07-21 16:55:56,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:55:56,730 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-07-21 16:55:56,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 16:55:56,731 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-07-21 16:55:56,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 16:55:56,733 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:55:56,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:55:56,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:56,934 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]=== [2020-07-21 16:55:56,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:55:56,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1371399406, now seen corresponding path program 1 times [2020-07-21 16:55:56,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:55:56,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228485655] [2020-07-21 16:55:56,935 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:55:56,982 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:55:56,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:55:56,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 16:55:56,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:55:57,003 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 16:55:57,004 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:57,009 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:55:57,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:55:57,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228485655] [2020-07-21 16:55:57,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:55:57,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 16:55:57,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696912801] [2020-07-21 16:55:57,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:55:57,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:55:57,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:55:57,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:55:57,020 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 5 states. [2020-07-21 16:55:57,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:55:57,130 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2020-07-21 16:55:57,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 16:55:57,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-07-21 16:55:57,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:55:57,131 INFO L225 Difference]: With dead ends: 93 [2020-07-21 16:55:57,132 INFO L226 Difference]: Without dead ends: 91 [2020-07-21 16:55:57,132 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 [2020-07-21 16:55:57,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-07-21 16:55:57,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 61. [2020-07-21 16:55:57,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-21 16:55:57,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-07-21 16:55:57,137 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 38 [2020-07-21 16:55:57,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:55:57,138 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-07-21 16:55:57,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:55:57,138 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-07-21 16:55:57,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-07-21 16:55:57,139 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:55:57,139 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] [2020-07-21 16:55:57,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:57,352 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]=== [2020-07-21 16:55:57,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:55:57,352 INFO L82 PathProgramCache]: Analyzing trace with hash 436294569, now seen corresponding path program 1 times [2020-07-21 16:55:57,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:55:57,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595159473] [2020-07-21 16:55:57,353 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:55:57,397 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:55:57,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:55:57,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 16:55:57,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:55:57,424 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 16:55:57,425 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:57,432 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:57,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:55:57,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:55:57,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595159473] [2020-07-21 16:55:57,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:55:57,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 16:55:57,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050940665] [2020-07-21 16:55:57,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:55:57,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:55:57,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:55:57,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:55:57,447 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 5 states. [2020-07-21 16:55:57,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:55:57,534 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2020-07-21 16:55:57,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 16:55:57,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-07-21 16:55:57,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:55:57,535 INFO L225 Difference]: With dead ends: 61 [2020-07-21 16:55:57,535 INFO L226 Difference]: Without dead ends: 59 [2020-07-21 16:55:57,536 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 [2020-07-21 16:55:57,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-07-21 16:55:57,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-07-21 16:55:57,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-21 16:55:57,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2020-07-21 16:55:57,541 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 39 [2020-07-21 16:55:57,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:55:57,541 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2020-07-21 16:55:57,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:55:57,542 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2020-07-21 16:55:57,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-21 16:55:57,542 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:55:57,542 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] [2020-07-21 16:55:57,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:57,756 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]=== [2020-07-21 16:55:57,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:55:57,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1627614740, now seen corresponding path program 1 times [2020-07-21 16:55:57,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:55:57,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968949885] [2020-07-21 16:55:57,758 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:55:57,801 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:55:57,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:55:57,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 16:55:57,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:55:57,819 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:57,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:55:57,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:55:57,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968949885] [2020-07-21 16:55:57,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:55:57,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 16:55:57,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029542776] [2020-07-21 16:55:57,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 16:55:57,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:55:57,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 16:55:57,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 16:55:57,832 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 4 states. [2020-07-21 16:55:57,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:55:57,862 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2020-07-21 16:55:57,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 16:55:57,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-07-21 16:55:57,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:55:57,863 INFO L225 Difference]: With dead ends: 70 [2020-07-21 16:55:57,863 INFO L226 Difference]: Without dead ends: 68 [2020-07-21 16:55:57,863 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 [2020-07-21 16:55:57,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-21 16:55:57,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2020-07-21 16:55:57,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-21 16:55:57,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-07-21 16:55:57,868 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 41 [2020-07-21 16:55:57,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:55:57,868 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-07-21 16:55:57,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 16:55:57,868 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-07-21 16:55:57,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 16:55:57,869 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:55:57,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:55:58,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:58,080 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]=== [2020-07-21 16:55:58,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:55:58,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1083553822, now seen corresponding path program 1 times [2020-07-21 16:55:58,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:55:58,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331855027] [2020-07-21 16:55:58,082 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:55:58,121 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:55:58,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:55:58,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 16:55:58,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:55:58,133 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:58,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:55:58,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:55:58,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331855027] [2020-07-21 16:55:58,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:55:58,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 16:55:58,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266985656] [2020-07-21 16:55:58,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:55:58,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:55:58,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:55:58,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:55:58,150 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 5 states. [2020-07-21 16:55:58,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:55:58,175 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2020-07-21 16:55:58,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 16:55:58,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-07-21 16:55:58,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:55:58,177 INFO L225 Difference]: With dead ends: 66 [2020-07-21 16:55:58,177 INFO L226 Difference]: Without dead ends: 64 [2020-07-21 16:55:58,177 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 [2020-07-21 16:55:58,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-21 16:55:58,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2020-07-21 16:55:58,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-21 16:55:58,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-07-21 16:55:58,181 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 42 [2020-07-21 16:55:58,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:55:58,182 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-07-21 16:55:58,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:55:58,182 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-07-21 16:55:58,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-21 16:55:58,182 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:55:58,183 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] [2020-07-21 16:55:58,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:58,393 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]=== [2020-07-21 16:55:58,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:55:58,394 INFO L82 PathProgramCache]: Analyzing trace with hash -769566670, now seen corresponding path program 1 times [2020-07-21 16:55:58,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:55:58,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535675377] [2020-07-21 16:55:58,395 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:55:58,443 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:55:58,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:55:58,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 16:55:58,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:55:58,463 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 16:55:58,464 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:58,469 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:55:58,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:55:58,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535675377] [2020-07-21 16:55:58,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:55:58,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 16:55:58,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592748524] [2020-07-21 16:55:58,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:55:58,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:55:58,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:55:58,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:55:58,478 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 5 states. [2020-07-21 16:55:58,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:55:58,620 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2020-07-21 16:55:58,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 16:55:58,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-07-21 16:55:58,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:55:58,622 INFO L225 Difference]: With dead ends: 76 [2020-07-21 16:55:58,622 INFO L226 Difference]: Without dead ends: 74 [2020-07-21 16:55:58,623 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 [2020-07-21 16:55:58,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-21 16:55:58,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 53. [2020-07-21 16:55:58,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-21 16:55:58,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-07-21 16:55:58,628 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 43 [2020-07-21 16:55:58,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:55:58,629 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-07-21 16:55:58,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:55:58,629 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-07-21 16:55:58,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-21 16:55:58,639 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:55:58,639 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] [2020-07-21 16:55:58,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:58,840 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]=== [2020-07-21 16:55:58,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:55:58,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1913240228, now seen corresponding path program 1 times [2020-07-21 16:55:58,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:55:58,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895876835] [2020-07-21 16:55:58,841 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:55:58,888 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:55:58,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:55:58,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 16:55:58,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:55:58,906 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 16:55:58,907 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:58,913 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:58,914 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:58,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:55:58,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:55:58,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895876835] [2020-07-21 16:55:58,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:55:58,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 16:55:58,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293216482] [2020-07-21 16:55:58,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:55:58,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:55:58,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:55:58,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:55:58,926 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-07-21 16:55:59,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:55:59,032 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-07-21 16:55:59,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 16:55:59,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-07-21 16:55:59,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:55:59,034 INFO L225 Difference]: With dead ends: 65 [2020-07-21 16:55:59,034 INFO L226 Difference]: Without dead ends: 63 [2020-07-21 16:55:59,035 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 [2020-07-21 16:55:59,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-21 16:55:59,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2020-07-21 16:55:59,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-07-21 16:55:59,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-07-21 16:55:59,040 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 44 [2020-07-21 16:55:59,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:55:59,040 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-07-21 16:55:59,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:55:59,040 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-07-21 16:55:59,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-21 16:55:59,041 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:55:59,041 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] [2020-07-21 16:55:59,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:59,252 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]=== [2020-07-21 16:55:59,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:55:59,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1562566919, now seen corresponding path program 1 times [2020-07-21 16:55:59,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:55:59,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919094561] [2020-07-21 16:55:59,254 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:55:59,301 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:55:59,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:55:59,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 16:55:59,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:55:59,323 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 16:55:59,324 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:59,343 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:55:59,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:55:59,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:55:59,364 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:55:59,392 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-07-21 16:55:59,392 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:55:59,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:55:59,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919094561] [2020-07-21 16:55:59,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:55:59,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-07-21 16:55:59,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136316700] [2020-07-21 16:55:59,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 16:55:59,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:55:59,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 16:55:59,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 16:55:59,405 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 8 states. [2020-07-21 16:55:59,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:55:59,527 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2020-07-21 16:55:59,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 16:55:59,528 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-07-21 16:55:59,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:55:59,529 INFO L225 Difference]: With dead ends: 51 [2020-07-21 16:55:59,529 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 16:55:59,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 77 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-07-21 16:55:59,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 16:55:59,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 16:55:59,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 16:55:59,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 16:55:59,531 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-07-21 16:55:59,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:55:59,532 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 16:55:59,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 16:55:59,532 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 16:55:59,532 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 16:55:59,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:55:59,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 16:56:00,033 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 91 [2020-07-21 16:56:00,585 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2020-07-21 16:56:00,755 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 26 [2020-07-21 16:56:01,060 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2020-07-21 16:56:01,064 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 16:56:01,064 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 16:56:01,065 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:56:01,065 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:56:01,065 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 16:56:01,065 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 16:56:01,065 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 16:56:01,066 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-21 16:56:01,066 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-21 16:56:01,066 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-07-21 16:56:01,066 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-21 16:56:01,066 INFO L268 CegarLoopResult]: For program point L192(lines 192 352) no Hoare annotation was computed. [2020-07-21 16:56:01,066 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 123) no Hoare annotation was computed. [2020-07-21 16:56:01,067 INFO L268 CegarLoopResult]: For program point L382(lines 382 391) no Hoare annotation was computed. [2020-07-21 16:56:01,067 INFO L268 CegarLoopResult]: For program point L93(lines 93 410) no Hoare annotation was computed. [2020-07-21 16:56:01,067 INFO L268 CegarLoopResult]: For program point L27(lines 27 435) no Hoare annotation was computed. [2020-07-21 16:56:01,067 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 437) no Hoare annotation was computed. [2020-07-21 16:56:01,067 INFO L268 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-07-21 16:56:01,067 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))))) [2020-07-21 16:56:01,067 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 253) no Hoare annotation was computed. [2020-07-21 16:56:01,068 INFO L268 CegarLoopResult]: For program point L102(lines 102 409) no Hoare annotation was computed. [2020-07-21 16:56:01,068 INFO L268 CegarLoopResult]: For program point L69(lines 69 414) no Hoare annotation was computed. [2020-07-21 16:56:01,068 INFO L264 CegarLoopResult]: At program point L325(lines 260 326) the Hoare annotation is: (and (= main_~__VERIFIER_assert__cond~10 1) (let ((.cse0 (<= 0 main_~main__scheme~0)) (.cse1 (= 1 main_~__VERIFIER_assert__cond~9)) (.cse2 (not (= (+ main_~main__cp~0 1) main_~main__urilen~0))) (.cse3 (= 1 main_~__VERIFIER_assert__cond~3)) (.cse4 (<= 1 main_~__VERIFIER_assert__cond~4)) (.cse5 (<= 1 main_~__VERIFIER_assert__cond~0)) (.cse6 (= 1 main_~__VERIFIER_assert__cond~1)) (.cse7 (<= 1 main_~__VERIFIER_assert__cond~6)) (.cse8 (<= 2 main_~main__cp~0)) (.cse9 (= 1 main_~__VERIFIER_assert__cond~5)) (.cse10 (<= 1 main_~__VERIFIER_assert__cond~8)) (.cse11 (not (= 0 main_~main__scheme~0))) (.cse12 (<= 1 main_~__VERIFIER_assert__cond~7)) (.cse13 (<= 1 main_~__VERIFIER_assert__cond~2))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= 1 main_~__VERIFIER_assert__cond~12) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse0 .cse1 .cse2 (< (+ main_~main__c~0 1) main_~main__tokenlen~0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13))) (<= 0 main_~main__c~0) (< main_~main__cp~0 main_~main__urilen~0) (= main_~__VERIFIER_assert__cond~11 1)) [2020-07-21 16:56:01,068 INFO L268 CegarLoopResult]: For program point L292(lines 292 316) no Hoare annotation was computed. [2020-07-21 16:56:01,068 INFO L268 CegarLoopResult]: For program point L160(lines 160 357) no Hoare annotation was computed. [2020-07-21 16:56:01,068 INFO L268 CegarLoopResult]: For program point L61(lines 61 420) no Hoare annotation was computed. [2020-07-21 16:56:01,068 INFO L268 CegarLoopResult]: For program point L251(lines 251 327) no Hoare annotation was computed. [2020-07-21 16:56:01,069 INFO L268 CegarLoopResult]: For program point L185(lines 185 353) no Hoare annotation was computed. [2020-07-21 16:56:01,069 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-07-21 16:56:01,069 INFO L264 CegarLoopResult]: At program point L408(lines 102 409) the Hoare annotation is: (<= 1 main_~__VERIFIER_assert__cond~0) [2020-07-21 16:56:01,069 INFO L268 CegarLoopResult]: For program point L210(lines 210 344) no Hoare annotation was computed. [2020-07-21 16:56:01,069 INFO L268 CegarLoopResult]: For program point L111(line 111) no Hoare annotation was computed. [2020-07-21 16:56:01,069 INFO L268 CegarLoopResult]: For program point L45(lines 45 432) no Hoare annotation was computed. [2020-07-21 16:56:01,069 INFO L268 CegarLoopResult]: For program point L268(lines 268 320) no Hoare annotation was computed. [2020-07-21 16:56:01,069 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 294) no Hoare annotation was computed. [2020-07-21 16:56:01,070 INFO L268 CegarLoopResult]: For program point L202(lines 202 351) no Hoare annotation was computed. [2020-07-21 16:56:01,070 INFO L268 CegarLoopResult]: For program point L260(lines 260 326) no Hoare annotation was computed. [2020-07-21 16:56:01,070 INFO L268 CegarLoopResult]: For program point L384(line 384) no Hoare annotation was computed. [2020-07-21 16:56:01,070 INFO L268 CegarLoopResult]: For program point L95(line 95) no Hoare annotation was computed. [2020-07-21 16:56:01,070 INFO L268 CegarLoopResult]: For program point L153(lines 153 358) no Hoare annotation was computed. [2020-07-21 16:56:01,070 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 155) no Hoare annotation was computed. [2020-07-21 16:56:01,070 INFO L268 CegarLoopResult]: For program point L21(lines 21 436) no Hoare annotation was computed. [2020-07-21 16:56:01,070 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 437) no Hoare annotation was computed. [2020-07-21 16:56:01,071 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 282) no Hoare annotation was computed. [2020-07-21 16:56:01,071 INFO L268 CegarLoopResult]: For program point L294(line 294) no Hoare annotation was computed. [2020-07-21 16:56:01,071 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2020-07-21 16:56:01,071 INFO L268 CegarLoopResult]: For program point L63(lines 63 415) no Hoare annotation was computed. [2020-07-21 16:56:01,071 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 437) the Hoare annotation is: true [2020-07-21 16:56:01,071 INFO L268 CegarLoopResult]: For program point L253(line 253) no Hoare annotation was computed. [2020-07-21 16:56:01,071 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 16:56:01,071 INFO L268 CegarLoopResult]: For program point L121(lines 121 401) no Hoare annotation was computed. [2020-07-21 16:56:01,071 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-07-21 16:56:01,072 INFO L268 CegarLoopResult]: For program point L270(line 270) no Hoare annotation was computed. [2020-07-21 16:56:01,072 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 212) no Hoare annotation was computed. [2020-07-21 16:56:01,072 INFO L268 CegarLoopResult]: For program point L39(lines 39 433) no Hoare annotation was computed. [2020-07-21 16:56:01,072 INFO L268 CegarLoopResult]: For program point mainErr16ASSERT_VIOLATIONERROR_FUNCTION(line 372) no Hoare annotation was computed. [2020-07-21 16:56:01,072 INFO L268 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-07-21 16:56:01,072 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 187) no Hoare annotation was computed. [2020-07-21 16:56:01,072 INFO L268 CegarLoopResult]: For program point L370(lines 370 393) no Hoare annotation was computed. [2020-07-21 16:56:01,072 INFO L268 CegarLoopResult]: For program point L81(lines 81 412) no Hoare annotation was computed. [2020-07-21 16:56:01,072 INFO L268 CegarLoopResult]: For program point L304(lines 304 314) no Hoare annotation was computed. [2020-07-21 16:56:01,073 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 306) no Hoare annotation was computed. [2020-07-21 16:56:01,073 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 111) no Hoare annotation was computed. [2020-07-21 16:56:01,073 INFO L268 CegarLoopResult]: For program point L222(lines 222 342) no Hoare annotation was computed. [2020-07-21 16:56:01,073 INFO L268 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2020-07-21 16:56:01,073 INFO L268 CegarLoopResult]: For program point L57(lines 57 430) no Hoare annotation was computed. [2020-07-21 16:56:01,073 INFO L264 CegarLoopResult]: At program point L313(lines 228 342) the Hoare annotation is: (let ((.cse17 (+ main_~main__cp~0 1))) (let ((.cse1 (<= 0 main_~main__scheme~0)) (.cse2 (= 1 main_~__VERIFIER_assert__cond~9)) (.cse3 (<= 1 main_~__VERIFIER_assert__cond~4)) (.cse4 (= 1 main_~__VERIFIER_assert__cond~3)) (.cse5 (<= 1 main_~__VERIFIER_assert__cond~0)) (.cse6 (= 1 main_~__VERIFIER_assert__cond~1)) (.cse7 (<= 1 main_~__VERIFIER_assert__cond~6)) (.cse8 (<= 2 main_~main__cp~0)) (.cse9 (= 1 main_~__VERIFIER_assert__cond~5)) (.cse0 (<= 0 main_~main__c~0)) (.cse10 (<= .cse17 main_~main__urilen~0)) (.cse11 (<= 1 main_~__VERIFIER_assert__cond~8)) (.cse12 (not (= 0 main_~main__scheme~0))) (.cse13 (<= 1 main_~main__cp~0)) (.cse14 (<= 1 main_~__VERIFIER_assert__cond~7)) (.cse16 (<= 1 main_~__VERIFIER_assert__cond~2))) (or (and (<= 1 main_~__VERIFIER_assert__cond~10) .cse0 (let ((.cse15 (<= 1 main_~__VERIFIER_assert__cond~9))) (or (and .cse1 .cse2 (< (+ main_~main__c~0 1) main_~main__tokenlen~0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16) (and .cse1 .cse2 .cse3 .cse4 (<= 1 main_~__VERIFIER_assert__cond~12) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16))) (= main_~__VERIFIER_assert__cond~11 1)) (and .cse1 .cse2 (not (= .cse17 main_~main__urilen~0)) .cse3 .cse4 (= 1 main_~__VERIFIER_assert__cond~8) .cse5 .cse6 .cse7 .cse8 .cse9 .cse0 .cse10 .cse11 .cse12 .cse13 .cse14 .cse16)))) [2020-07-21 16:56:01,074 INFO L268 CegarLoopResult]: For program point L280(lines 280 318) no Hoare annotation was computed. [2020-07-21 16:56:01,074 INFO L268 CegarLoopResult]: For program point L239(lines 239 329) no Hoare annotation was computed. [2020-07-21 16:56:01,074 INFO L268 CegarLoopResult]: For program point L173(lines 173 355) no Hoare annotation was computed. [2020-07-21 16:56:01,074 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 241) no Hoare annotation was computed. [2020-07-21 16:56:01,074 INFO L268 CegarLoopResult]: For program point L33(lines 33 434) no Hoare annotation was computed. [2020-07-21 16:56:01,074 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 95) no Hoare annotation was computed. [2020-07-21 16:56:01,074 INFO L268 CegarLoopResult]: For program point L372(line 372) no Hoare annotation was computed. [2020-07-21 16:56:01,074 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-07-21 16:56:01,074 INFO L268 CegarLoopResult]: For program point L306(line 306) no Hoare annotation was computed. [2020-07-21 16:56:01,075 INFO L268 CegarLoopResult]: For program point L141(lines 141 360) no Hoare annotation was computed. [2020-07-21 16:56:01,075 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 224) no Hoare annotation was computed. [2020-07-21 16:56:01,075 INFO L268 CegarLoopResult]: For program point L232(lines 232 336) no Hoare annotation was computed. [2020-07-21 16:56:01,075 INFO L268 CegarLoopResult]: For program point mainErr17ASSERT_VIOLATIONERROR_FUNCTION(line 384) no Hoare annotation was computed. [2020-07-21 16:56:01,075 INFO L268 CegarLoopResult]: For program point L133(lines 133 395) no Hoare annotation was computed. [2020-07-21 16:56:01,075 INFO L268 CegarLoopResult]: For program point L224(line 224) no Hoare annotation was computed. [2020-07-21 16:56:01,075 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 143) no Hoare annotation was computed. [2020-07-21 16:56:01,075 INFO L268 CegarLoopResult]: For program point L59(lines 59 425) no Hoare annotation was computed. [2020-07-21 16:56:01,075 INFO L268 CegarLoopResult]: For program point L282(line 282) no Hoare annotation was computed. [2020-07-21 16:56:01,076 INFO L268 CegarLoopResult]: For program point L51(lines 51 431) no Hoare annotation was computed. [2020-07-21 16:56:01,076 INFO L268 CegarLoopResult]: For program point L241(line 241) no Hoare annotation was computed. [2020-07-21 16:56:01,076 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 270) no Hoare annotation was computed. [2020-07-21 16:56:01,076 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 16:56:01,076 INFO L268 CegarLoopResult]: For program point L109(lines 109 403) no Hoare annotation was computed. [2020-07-21 16:56:01,076 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)) [2020-07-21 16:56:01,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:56:01 BoogieIcfgContainer [2020-07-21 16:56:01,101 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:56:01,103 INFO L168 Benchmark]: Toolchain (without parser) took 11670.93 ms. Allocated memory was 139.5 MB in the beginning and 291.5 MB in the end (delta: 152.0 MB). Free memory was 104.5 MB in the beginning and 138.0 MB in the end (delta: -33.4 MB). Peak memory consumption was 143.0 MB. Max. memory is 7.1 GB. [2020-07-21 16:56:01,103 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 16:56:01,104 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.86 ms. Allocated memory is still 139.5 MB. Free memory was 104.1 MB in the beginning and 91.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-07-21 16:56:01,104 INFO L168 Benchmark]: Boogie Preprocessor took 126.30 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 91.2 MB in the beginning and 181.4 MB in the end (delta: -90.3 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-21 16:56:01,105 INFO L168 Benchmark]: RCFGBuilder took 508.39 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 153.3 MB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2020-07-21 16:56:01,105 INFO L168 Benchmark]: TraceAbstraction took 10687.02 ms. Allocated memory was 203.4 MB in the beginning and 291.5 MB in the end (delta: 88.1 MB). Free memory was 152.7 MB in the beginning and 138.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 127.2 MB. Max. memory is 7.1 GB. [2020-07-21 16:56:01,108 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 343.86 ms. Allocated memory is still 139.5 MB. Free memory was 104.1 MB in the beginning and 91.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.30 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 91.2 MB in the beginning and 181.4 MB in the end (delta: -90.3 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 508.39 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 153.3 MB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10687.02 ms. Allocated memory was 203.4 MB in the beginning and 291.5 MB in the end (delta: 88.1 MB). Free memory was 152.7 MB in the beginning and 138.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 127.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 83]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 306]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 372]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 187]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 212]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 282]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 224]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 241]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 294]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 270]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 143]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 253]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 384]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 111]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 175]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 155]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 123]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 95]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: ((((((0 <= main__scheme && main__cp < main__urilen) && 1 == __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond - InvariantResult [Line: 102]: Loop Invariant Derived loop invariant: 1 <= __VERIFIER_assert__cond - InvariantResult [Line: 228]: Loop Invariant Derived loop invariant: (((1 <= __VERIFIER_assert__cond && 0 <= main__c) && (((((((((((((((((0 <= main__scheme && 1 == __VERIFIER_assert__cond) && main__c + 1 < main__tokenlen) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 2 <= main__cp) && 1 == __VERIFIER_assert__cond) && main__cp + 1 <= main__urilen) && 1 <= __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) || ((((((((((((((((0 <= main__scheme && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 2 <= main__cp) && 1 == __VERIFIER_assert__cond) && main__cp + 1 <= main__urilen) && 1 <= __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond))) && __VERIFIER_assert__cond == 1) || (((((((((((((((((0 <= main__scheme && 1 == __VERIFIER_assert__cond) && !(main__cp + 1 == main__urilen)) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 2 <= main__cp) && 1 == __VERIFIER_assert__cond) && 0 <= main__c) && main__cp + 1 <= main__urilen) && 1 <= __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: ((((((((1 <= __VERIFIER_assert__cond && 0 <= main__scheme) && main__cp + 1 <= main__urilen) && 1 == __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= main__cp) && main__cp + 1 == main__urilen) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) || ((((((((1 <= __VERIFIER_assert__cond && 0 <= main__scheme) && main__cp + 1 <= main__urilen) && 1 == __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) - InvariantResult [Line: 260]: Loop Invariant Derived loop invariant: (((__VERIFIER_assert__cond == 1 && (((((((((((((((0 <= main__scheme && 1 == __VERIFIER_assert__cond) && !(main__cp + 1 == main__urilen)) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 2 <= main__cp) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) || ((((((((((((((0 <= main__scheme && 1 == __VERIFIER_assert__cond) && !(main__cp + 1 == main__urilen)) && main__c + 1 < main__tokenlen) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 2 <= main__cp) && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond))) && 0 <= main__c) && main__cp < main__urilen) && __VERIFIER_assert__cond == 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 91 locations, 18 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.2s, OverallIterations: 22, TraceHistogramMax: 2, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1295 SDtfs, 2020 SDslu, 1522 SDs, 0 SdLazy, 996 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 825 GetRequests, 709 SyntacticMatches, 15 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 22 MinimizatonAttempts, 327 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 399 HoareAnnotationTreeSize, 9 FomulaSimplifications, 457577 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 9 FomulaSimplificationsInter, 20459 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 701 NumberOfCodeBlocks, 687 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 781 ConstructedInterpolants, 0 QuantifiedInterpolants, 56324 SizeOfPredicates, 113 NumberOfNonLiveVariables, 2357 ConjunctsInSsa, 166 ConjunctsInUnsatCore, 25 InterpolantComputations, 19 PerfectInterpolantSequences, 6/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...