/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 DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 22:28:05,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 22:28:05,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 22:28:05,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 22:28:05,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 22:28:05,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 22:28:05,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 22:28:05,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 22:28:05,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 22:28:05,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 22:28:05,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 22:28:05,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 22:28:05,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 22:28:05,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 22:28:05,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 22:28:05,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 22:28:05,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 22:28:05,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 22:28:05,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 22:28:05,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 22:28:05,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 22:28:05,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 22:28:05,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 22:28:05,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 22:28:05,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 22:28:05,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 22:28:05,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 22:28:05,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 22:28:05,309 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 22:28:05,347 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 22:28:05,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 22:28:05,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 22:28:05,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 22:28:05,352 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 22:28:05,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 22:28:05,353 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 22:28:05,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 22:28:05,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 22:28:05,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 22:28:05,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 22:28:05,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 22:28:05,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 22:28:05,355 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 22:28:05,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 22:28:05,355 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 22:28:05,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 22:28:05,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 22:28:05,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 22:28:05,356 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 22:28:05,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 22:28:05,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:28:05,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 22:28:05,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 22:28:05,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 22:28:05,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 22:28:05,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:05,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 22:28:05,359 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 22:28:05,359 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 -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 22:28:05,704 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 22:28:05,716 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 22:28:05,720 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 22:28:05,722 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 22:28:05,722 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 22:28:05,723 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2020-07-20 22:28:05,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3138c94e5/72e012e4cea349b1aebd4bf450cd9419/FLAG04a256de2 [2020-07-20 22:28:06,294 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 22:28:06,295 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i.v+cfa-reducer.c [2020-07-20 22:28:06,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3138c94e5/72e012e4cea349b1aebd4bf450cd9419/FLAG04a256de2 [2020-07-20 22:28:06,596 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3138c94e5/72e012e4cea349b1aebd4bf450cd9419 [2020-07-20 22:28:06,608 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 22:28:06,612 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 22:28:06,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 22:28:06,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 22:28:06,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 22:28:06,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:28:06" (1/1) ... [2020-07-20 22:28:06,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@478c2760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:06, skipping insertion in model container [2020-07-20 22:28:06,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:28:06" (1/1) ... [2020-07-20 22:28:06,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 22:28:06,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 22:28:06,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:28:06,939 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 22:28:06,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:28:07,006 INFO L208 MainTranslator]: Completed translation [2020-07-20 22:28:07,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:07 WrapperNode [2020-07-20 22:28:07,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 22:28:07,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 22:28:07,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 22:28:07,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 22:28:07,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:07" (1/1) ... [2020-07-20 22:28:07,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:07" (1/1) ... [2020-07-20 22:28:07,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:07" (1/1) ... [2020-07-20 22:28:07,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:07" (1/1) ... [2020-07-20 22:28:07,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:07" (1/1) ... [2020-07-20 22:28:07,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:07" (1/1) ... [2020-07-20 22:28:07,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:07" (1/1) ... [2020-07-20 22:28:07,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 22:28:07,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 22:28:07,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 22:28:07,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 22:28:07,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:28:07,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 22:28:07,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 22:28:07,207 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 22:28:07,207 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 22:28:07,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 22:28:07,208 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 22:28:07,208 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 22:28:07,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 22:28:07,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 22:28:07,208 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 22:28:07,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 22:28:07,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 22:28:07,737 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 22:28:07,737 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 22:28:07,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:28:07 BoogieIcfgContainer [2020-07-20 22:28:07,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 22:28:07,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 22:28:07,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 22:28:07,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 22:28:07,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:28:06" (1/3) ... [2020-07-20 22:28:07,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d8496d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:28:07, skipping insertion in model container [2020-07-20 22:28:07,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:28:07" (2/3) ... [2020-07-20 22:28:07,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d8496d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:28:07, skipping insertion in model container [2020-07-20 22:28:07,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:28:07" (3/3) ... [2020-07-20 22:28:07,757 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i.v+cfa-reducer.c [2020-07-20 22:28:07,771 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 22:28:07,784 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 18 error locations. [2020-07-20 22:28:07,801 INFO L251 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-07-20 22:28:07,852 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 22:28:07,852 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 22:28:07,852 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 22:28:07,852 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 22:28:07,853 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 22:28:07,853 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 22:28:07,853 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 22:28:07,853 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 22:28:07,897 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-07-20 22:28:07,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 22:28:07,903 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:28:07,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:28:07,905 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:28:07,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:28:07,910 INFO L82 PathProgramCache]: Analyzing trace with hash -2019463306, now seen corresponding path program 1 times [2020-07-20 22:28:07,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:28:07,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380330504] [2020-07-20 22:28:07,918 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:07,996 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:28:07,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:28:08,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 22:28:08,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:28:08,064 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:08,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:28:08,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:28:08,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380330504] [2020-07-20 22:28:08,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:28:08,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:28:08,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269310209] [2020-07-20 22:28:08,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:28:08,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:28:08,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:28:08,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:28:08,138 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 3 states. [2020-07-20 22:28:08,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:28:08,179 INFO L93 Difference]: Finished difference Result 93 states and 129 transitions. [2020-07-20 22:28:08,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:28:08,181 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-20 22:28:08,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:28:08,194 INFO L225 Difference]: With dead ends: 93 [2020-07-20 22:28:08,195 INFO L226 Difference]: Without dead ends: 80 [2020-07-20 22:28:08,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:28:08,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-07-20 22:28:08,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-07-20 22:28:08,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-20 22:28:08,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2020-07-20 22:28:08,253 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 19 [2020-07-20 22:28:08,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:28:08,254 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2020-07-20 22:28:08,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:28:08,254 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2020-07-20 22:28:08,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 22:28:08,255 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:28:08,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:28:08,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:08,471 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:28:08,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:28:08,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1821150056, now seen corresponding path program 1 times [2020-07-20 22:28:08,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:28:08,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174438984] [2020-07-20 22:28:08,474 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:08,537 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:28:08,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:28:08,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:28:08,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:28:08,586 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:08,588 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:08,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:28:08,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:28:08,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174438984] [2020-07-20 22:28:08,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:28:08,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 22:28:08,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729459407] [2020-07-20 22:28:08,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 22:28:08,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:28:08,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 22:28:08,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 22:28:08,600 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand 6 states. [2020-07-20 22:28:08,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:28:08,749 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2020-07-20 22:28:08,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 22:28:08,750 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-07-20 22:28:08,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:28:08,752 INFO L225 Difference]: With dead ends: 80 [2020-07-20 22:28:08,753 INFO L226 Difference]: Without dead ends: 78 [2020-07-20 22:28:08,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 22:28:08,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-20 22:28:08,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-07-20 22:28:08,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-07-20 22:28:08,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2020-07-20 22:28:08,766 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 20 [2020-07-20 22:28:08,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:28:08,767 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2020-07-20 22:28:08,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 22:28:08,767 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2020-07-20 22:28:08,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 22:28:08,768 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:28:08,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:28:08,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:08,983 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:28:08,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:28:08,984 INFO L82 PathProgramCache]: Analyzing trace with hash 2073610827, now seen corresponding path program 1 times [2020-07-20 22:28:08,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:28:08,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403737985] [2020-07-20 22:28:08,985 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:09,025 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:28:09,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:28:09,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 22:28:09,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:28:09,040 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:09,042 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:09,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:28:09,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:28:09,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403737985] [2020-07-20 22:28:09,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:28:09,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 22:28:09,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358745756] [2020-07-20 22:28:09,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 22:28:09,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:28:09,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 22:28:09,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 22:28:09,069 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 4 states. [2020-07-20 22:28:09,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:28:09,170 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2020-07-20 22:28:09,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 22:28:09,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-20 22:28:09,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:28:09,175 INFO L225 Difference]: With dead ends: 101 [2020-07-20 22:28:09,175 INFO L226 Difference]: Without dead ends: 99 [2020-07-20 22:28:09,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:28:09,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-07-20 22:28:09,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 76. [2020-07-20 22:28:09,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-20 22:28:09,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2020-07-20 22:28:09,185 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 22 [2020-07-20 22:28:09,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:28:09,185 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2020-07-20 22:28:09,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 22:28:09,186 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2020-07-20 22:28:09,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 22:28:09,186 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:28:09,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:28:09,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:09,392 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:28:09,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:28:09,393 INFO L82 PathProgramCache]: Analyzing trace with hash -142570686, now seen corresponding path program 1 times [2020-07-20 22:28:09,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:28:09,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131173676] [2020-07-20 22:28:09,394 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:09,434 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:28:09,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:28:09,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 22:28:09,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:28:09,459 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:09,461 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:28:09,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:28:09,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131173676] [2020-07-20 22:28:09,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:28:09,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 22:28:09,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233371324] [2020-07-20 22:28:09,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:28:09,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:28:09,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:28:09,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:28:09,478 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 5 states. [2020-07-20 22:28:09,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:28:09,566 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2020-07-20 22:28:09,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 22:28:09,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-07-20 22:28:09,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:28:09,568 INFO L225 Difference]: With dead ends: 76 [2020-07-20 22:28:09,568 INFO L226 Difference]: Without dead ends: 74 [2020-07-20 22:28:09,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:28:09,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-20 22:28:09,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-07-20 22:28:09,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-07-20 22:28:09,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-07-20 22:28:09,577 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 23 [2020-07-20 22:28:09,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:28:09,577 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-07-20 22:28:09,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:28:09,577 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-07-20 22:28:09,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 22:28:09,578 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:28:09,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:28:09,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:09,779 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:28:09,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:28:09,780 INFO L82 PathProgramCache]: Analyzing trace with hash 402497124, now seen corresponding path program 1 times [2020-07-20 22:28:09,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:28:09,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676358016] [2020-07-20 22:28:09,781 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:09,836 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:28:09,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:28:09,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 22:28:09,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:28:09,869 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:09,871 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:09,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:28:09,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:28:09,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676358016] [2020-07-20 22:28:09,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:28:09,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 22:28:09,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832005005] [2020-07-20 22:28:09,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:28:09,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:28:09,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:28:09,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:28:09,883 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 5 states. [2020-07-20 22:28:10,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:28:10,051 INFO L93 Difference]: Finished difference Result 173 states and 181 transitions. [2020-07-20 22:28:10,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 22:28:10,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-07-20 22:28:10,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:28:10,053 INFO L225 Difference]: With dead ends: 173 [2020-07-20 22:28:10,053 INFO L226 Difference]: Without dead ends: 171 [2020-07-20 22:28:10,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:28:10,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-07-20 22:28:10,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 77. [2020-07-20 22:28:10,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-20 22:28:10,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-07-20 22:28:10,065 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 26 [2020-07-20 22:28:10,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:28:10,066 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-07-20 22:28:10,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:28:10,066 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-07-20 22:28:10,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 22:28:10,067 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:28:10,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:28:10,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:10,283 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:28:10,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:28:10,284 INFO L82 PathProgramCache]: Analyzing trace with hash 406230933, now seen corresponding path program 1 times [2020-07-20 22:28:10,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:28:10,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374739163] [2020-07-20 22:28:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:10,322 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:28:10,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:28:10,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 22:28:10,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:28:10,401 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:10,403 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:10,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:28:10,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:28:10,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374739163] [2020-07-20 22:28:10,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:28:10,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 22:28:10,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424772436] [2020-07-20 22:28:10,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:28:10,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:28:10,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:28:10,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:28:10,417 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 5 states. [2020-07-20 22:28:10,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:28:10,557 INFO L93 Difference]: Finished difference Result 137 states and 144 transitions. [2020-07-20 22:28:10,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 22:28:10,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-07-20 22:28:10,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:28:10,562 INFO L225 Difference]: With dead ends: 137 [2020-07-20 22:28:10,563 INFO L226 Difference]: Without dead ends: 135 [2020-07-20 22:28:10,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:28:10,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-07-20 22:28:10,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 79. [2020-07-20 22:28:10,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-20 22:28:10,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2020-07-20 22:28:10,590 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 26 [2020-07-20 22:28:10,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:28:10,591 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2020-07-20 22:28:10,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:28:10,592 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2020-07-20 22:28:10,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 22:28:10,595 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:28:10,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:28:10,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:10,810 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:28:10,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:28:10,812 INFO L82 PathProgramCache]: Analyzing trace with hash -407487796, now seen corresponding path program 1 times [2020-07-20 22:28:10,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:28:10,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463189531] [2020-07-20 22:28:10,813 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:10,857 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:28:10,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:28:10,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 22:28:10,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:28:10,874 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:10,876 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:10,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:28:10,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:28:10,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463189531] [2020-07-20 22:28:10,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:28:10,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 22:28:10,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834686342] [2020-07-20 22:28:10,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:28:10,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:28:10,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:28:10,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:28:10,886 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 5 states. [2020-07-20 22:28:11,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:28:11,031 INFO L93 Difference]: Finished difference Result 121 states and 127 transitions. [2020-07-20 22:28:11,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 22:28:11,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-20 22:28:11,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:28:11,034 INFO L225 Difference]: With dead ends: 121 [2020-07-20 22:28:11,034 INFO L226 Difference]: Without dead ends: 119 [2020-07-20 22:28:11,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:28:11,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-07-20 22:28:11,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 77. [2020-07-20 22:28:11,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-20 22:28:11,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-07-20 22:28:11,078 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 27 [2020-07-20 22:28:11,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:28:11,080 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-07-20 22:28:11,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:28:11,082 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-07-20 22:28:11,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 22:28:11,083 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:28:11,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:28:11,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:11,298 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:28:11,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:28:11,299 INFO L82 PathProgramCache]: Analyzing trace with hash -291739827, now seen corresponding path program 1 times [2020-07-20 22:28:11,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:28:11,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561294151] [2020-07-20 22:28:11,300 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:11,336 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:28:11,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:28:11,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 22:28:11,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:28:11,354 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:11,355 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:11,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:28:11,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:28:11,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561294151] [2020-07-20 22:28:11,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:28:11,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 22:28:11,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389639521] [2020-07-20 22:28:11,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:28:11,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:28:11,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:28:11,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:28:11,365 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 5 states. [2020-07-20 22:28:11,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:28:11,465 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-07-20 22:28:11,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 22:28:11,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-20 22:28:11,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:28:11,468 INFO L225 Difference]: With dead ends: 77 [2020-07-20 22:28:11,468 INFO L226 Difference]: Without dead ends: 75 [2020-07-20 22:28:11,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:28:11,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-07-20 22:28:11,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-07-20 22:28:11,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-20 22:28:11,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-07-20 22:28:11,478 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 27 [2020-07-20 22:28:11,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:28:11,479 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-07-20 22:28:11,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:28:11,479 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-07-20 22:28:11,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 22:28:11,482 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:28:11,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:28:11,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:11,684 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:28:11,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:28:11,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1188998893, now seen corresponding path program 1 times [2020-07-20 22:28:11,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:28:11,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631813134] [2020-07-20 22:28:11,686 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:11,721 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 22:28:11,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:28:11,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 22:28:11,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:28:11,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:28:11,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:28:11,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631813134] [2020-07-20 22:28:11,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:28:11,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:28:11,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371073743] [2020-07-20 22:28:11,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:28:11,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:28:11,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:28:11,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:28:11,740 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 3 states. [2020-07-20 22:28:11,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:28:11,798 INFO L93 Difference]: Finished difference Result 115 states and 121 transitions. [2020-07-20 22:28:11,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:28:11,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-07-20 22:28:11,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:28:11,800 INFO L225 Difference]: With dead ends: 115 [2020-07-20 22:28:11,800 INFO L226 Difference]: Without dead ends: 75 [2020-07-20 22:28:11,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:28:11,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-07-20 22:28:11,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-07-20 22:28:11,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-20 22:28:11,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-07-20 22:28:11,816 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 29 [2020-07-20 22:28:11,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:28:11,816 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-07-20 22:28:11,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:28:11,816 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-07-20 22:28:11,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 22:28:11,817 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:28:11,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:28:12,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:12,019 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:28:12,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:28:12,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1640998784, now seen corresponding path program 1 times [2020-07-20 22:28:12,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:28:12,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604679408] [2020-07-20 22:28:12,022 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:12,066 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:28:12,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:28:12,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:28:12,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:28:12,121 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:12,123 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:28:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:28:12,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:28:12,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604679408] [2020-07-20 22:28:12,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:28:12,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 22:28:12,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881194953] [2020-07-20 22:28:12,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:28:12,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:28:12,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:28:12,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:28:12,143 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 5 states. [2020-07-20 22:28:12,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:28:12,226 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2020-07-20 22:28:12,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 22:28:12,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-20 22:28:12,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:28:12,227 INFO L225 Difference]: With dead ends: 76 [2020-07-20 22:28:12,227 INFO L226 Difference]: Without dead ends: 74 [2020-07-20 22:28:12,227 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 [2020-07-20 22:28:12,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-20 22:28:12,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-07-20 22:28:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-07-20 22:28:12,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2020-07-20 22:28:12,233 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 30 [2020-07-20 22:28:12,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:28:12,234 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2020-07-20 22:28:12,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:28:12,234 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2020-07-20 22:28:12,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 22:28:12,235 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:28:12,235 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:28:12,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:12,447 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:28:12,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:28:12,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1892106755, now seen corresponding path program 1 times [2020-07-20 22:28:12,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:28:12,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684571830] [2020-07-20 22:28:12,449 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:12,496 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:28:12,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:28:12,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 22:28:12,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:28:12,527 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:12,529 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 22:28:12,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:28:12,547 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:28:12,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 22:28:12,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684571830] [2020-07-20 22:28:12,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:28:12,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-07-20 22:28:12,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744075099] [2020-07-20 22:28:12,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:28:12,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:28:12,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:28:12,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:28:12,584 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 5 states. [2020-07-20 22:28:12,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:28:12,690 INFO L93 Difference]: Finished difference Result 111 states and 115 transitions. [2020-07-20 22:28:12,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 22:28:12,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-20 22:28:12,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:28:12,692 INFO L225 Difference]: With dead ends: 111 [2020-07-20 22:28:12,692 INFO L226 Difference]: Without dead ends: 109 [2020-07-20 22:28:12,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:28:12,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-20 22:28:12,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 70. [2020-07-20 22:28:12,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-20 22:28:12,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2020-07-20 22:28:12,699 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 30 [2020-07-20 22:28:12,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:28:12,700 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2020-07-20 22:28:12,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:28:12,700 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2020-07-20 22:28:12,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 22:28:12,701 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:28:12,701 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, 1, 1, 1, 1, 1] [2020-07-20 22:28:12,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:12,914 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:28:12,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:28:12,915 INFO L82 PathProgramCache]: Analyzing trace with hash 668648404, now seen corresponding path program 1 times [2020-07-20 22:28:12,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:28:12,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934362292] [2020-07-20 22:28:12,916 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:12,955 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:28:12,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:28:12,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 22:28:12,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:28:12,972 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:12,974 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:12,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:28:12,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:28:12,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934362292] [2020-07-20 22:28:12,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:28:12,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 22:28:12,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115389265] [2020-07-20 22:28:12,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:28:12,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:28:12,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:28:12,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:28:12,985 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand 5 states. [2020-07-20 22:28:13,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:28:13,088 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2020-07-20 22:28:13,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 22:28:13,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-07-20 22:28:13,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:28:13,090 INFO L225 Difference]: With dead ends: 70 [2020-07-20 22:28:13,090 INFO L226 Difference]: Without dead ends: 68 [2020-07-20 22:28:13,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:28:13,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-20 22:28:13,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-20 22:28:13,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-20 22:28:13,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2020-07-20 22:28:13,095 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 31 [2020-07-20 22:28:13,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:28:13,095 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2020-07-20 22:28:13,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:28:13,096 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2020-07-20 22:28:13,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 22:28:13,096 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:28:13,097 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:28:13,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:13,309 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:28:13,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:28:13,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1470784207, now seen corresponding path program 1 times [2020-07-20 22:28:13,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:28:13,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15738069] [2020-07-20 22:28:13,310 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:13,350 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:28:13,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:28:13,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 22:28:13,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:28:13,377 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:13,379 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:13,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 22:28:13,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:28:13,393 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:28:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 22:28:13,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15738069] [2020-07-20 22:28:13,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:28:13,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-07-20 22:28:13,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117327193] [2020-07-20 22:28:13,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:28:13,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:28:13,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:28:13,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:28:13,423 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand 5 states. [2020-07-20 22:28:13,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:28:13,500 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2020-07-20 22:28:13,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 22:28:13,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-07-20 22:28:13,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:28:13,501 INFO L225 Difference]: With dead ends: 69 [2020-07-20 22:28:13,502 INFO L226 Difference]: Without dead ends: 67 [2020-07-20 22:28:13,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:28:13,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-20 22:28:13,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 62. [2020-07-20 22:28:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-20 22:28:13,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2020-07-20 22:28:13,506 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 31 [2020-07-20 22:28:13,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:28:13,506 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2020-07-20 22:28:13,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:28:13,507 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2020-07-20 22:28:13,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-20 22:28:13,507 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:28:13,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:28:13,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:13,709 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:28:13,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:28:13,709 INFO L82 PathProgramCache]: Analyzing trace with hash -350608983, now seen corresponding path program 1 times [2020-07-20 22:28:13,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:28:13,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182569417] [2020-07-20 22:28:13,711 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:13,746 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:28:13,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:28:13,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 22:28:13,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:28:13,784 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:13,785 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:28:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:28:13,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:28:13,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182569417] [2020-07-20 22:28:13,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:28:13,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 22:28:13,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933739956] [2020-07-20 22:28:13,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:28:13,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:28:13,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:28:13,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:28:13,803 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand 5 states. [2020-07-20 22:28:13,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:28:13,872 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-07-20 22:28:13,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 22:28:13,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-07-20 22:28:13,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:28:13,874 INFO L225 Difference]: With dead ends: 63 [2020-07-20 22:28:13,874 INFO L226 Difference]: Without dead ends: 61 [2020-07-20 22:28:13,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:28:13,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-20 22:28:13,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-07-20 22:28:13,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-20 22:28:13,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2020-07-20 22:28:13,880 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 34 [2020-07-20 22:28:13,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:28:13,880 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2020-07-20 22:28:13,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:28:13,881 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2020-07-20 22:28:13,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-20 22:28:13,883 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:28:13,883 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, 1] [2020-07-20 22:28:14,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:14,096 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:28:14,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:28:14,097 INFO L82 PathProgramCache]: Analyzing trace with hash 2016026591, now seen corresponding path program 1 times [2020-07-20 22:28:14,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:28:14,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503668142] [2020-07-20 22:28:14,098 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:14,136 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:28:14,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:28:14,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:28:14,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:28:14,166 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:14,167 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:14,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:28:14,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:28:14,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503668142] [2020-07-20 22:28:14,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:28:14,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 22:28:14,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464621654] [2020-07-20 22:28:14,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 22:28:14,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:28:14,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 22:28:14,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 22:28:14,183 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 6 states. [2020-07-20 22:28:14,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:28:14,304 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2020-07-20 22:28:14,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 22:28:14,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-07-20 22:28:14,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:28:14,306 INFO L225 Difference]: With dead ends: 71 [2020-07-20 22:28:14,306 INFO L226 Difference]: Without dead ends: 69 [2020-07-20 22:28:14,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-07-20 22:28:14,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-20 22:28:14,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 58. [2020-07-20 22:28:14,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-07-20 22:28:14,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-07-20 22:28:14,311 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 35 [2020-07-20 22:28:14,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:28:14,311 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-07-20 22:28:14,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 22:28:14,312 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-07-20 22:28:14,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 22:28:14,312 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:28:14,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:28:14,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:14,524 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:28:14,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:28:14,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1371399406, now seen corresponding path program 1 times [2020-07-20 22:28:14,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:28:14,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847347337] [2020-07-20 22:28:14,526 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:14,566 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:28:14,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:28:14,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 22:28:14,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:28:14,593 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 22:28:14,593 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:14,600 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:28:14,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:28:14,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847347337] [2020-07-20 22:28:14,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:28:14,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 22:28:14,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024039250] [2020-07-20 22:28:14,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:28:14,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:28:14,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:28:14,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:28:14,611 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 5 states. [2020-07-20 22:28:14,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:28:14,767 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2020-07-20 22:28:14,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 22:28:14,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-07-20 22:28:14,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:28:14,769 INFO L225 Difference]: With dead ends: 93 [2020-07-20 22:28:14,770 INFO L226 Difference]: Without dead ends: 91 [2020-07-20 22:28:14,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:28:14,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-07-20 22:28:14,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 61. [2020-07-20 22:28:14,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-20 22:28:14,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-07-20 22:28:14,776 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 38 [2020-07-20 22:28:14,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:28:14,776 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-07-20 22:28:14,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:28:14,776 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-07-20 22:28:14,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-07-20 22:28:14,777 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:28:14,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:28:14,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:14,990 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:28:14,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:28:14,991 INFO L82 PathProgramCache]: Analyzing trace with hash 436294569, now seen corresponding path program 1 times [2020-07-20 22:28:14,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:28:14,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369699921] [2020-07-20 22:28:14,992 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:15,035 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:28:15,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:28:15,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 22:28:15,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:28:15,057 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 22:28:15,058 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:15,069 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:15,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:28:15,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:28:15,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369699921] [2020-07-20 22:28:15,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:28:15,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 22:28:15,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353119727] [2020-07-20 22:28:15,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:28:15,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:28:15,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:28:15,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:28:15,078 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 5 states. [2020-07-20 22:28:15,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:28:15,174 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2020-07-20 22:28:15,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 22:28:15,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-07-20 22:28:15,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:28:15,176 INFO L225 Difference]: With dead ends: 61 [2020-07-20 22:28:15,177 INFO L226 Difference]: Without dead ends: 59 [2020-07-20 22:28:15,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:28:15,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-07-20 22:28:15,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-07-20 22:28:15,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-20 22:28:15,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2020-07-20 22:28:15,183 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 39 [2020-07-20 22:28:15,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:28:15,183 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2020-07-20 22:28:15,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:28:15,183 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2020-07-20 22:28:15,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-20 22:28:15,184 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:28:15,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:28:15,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:15,396 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:28:15,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:28:15,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1627614740, now seen corresponding path program 1 times [2020-07-20 22:28:15,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:28:15,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923748176] [2020-07-20 22:28:15,398 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:15,443 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:28:15,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:28:15,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 22:28:15,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:28:15,456 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:15,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:28:15,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:28:15,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923748176] [2020-07-20 22:28:15,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:28:15,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 22:28:15,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114572408] [2020-07-20 22:28:15,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 22:28:15,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:28:15,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 22:28:15,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 22:28:15,486 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 4 states. [2020-07-20 22:28:15,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:28:15,521 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2020-07-20 22:28:15,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 22:28:15,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-07-20 22:28:15,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:28:15,523 INFO L225 Difference]: With dead ends: 70 [2020-07-20 22:28:15,523 INFO L226 Difference]: Without dead ends: 68 [2020-07-20 22:28:15,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:28:15,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-20 22:28:15,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2020-07-20 22:28:15,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-20 22:28:15,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-07-20 22:28:15,528 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 41 [2020-07-20 22:28:15,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:28:15,528 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-07-20 22:28:15,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 22:28:15,529 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-07-20 22:28:15,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-20 22:28:15,529 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:28:15,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:28:15,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:15,739 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:28:15,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:28:15,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1083553822, now seen corresponding path program 1 times [2020-07-20 22:28:15,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:28:15,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139050298] [2020-07-20 22:28:15,740 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:15,799 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:28:15,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:28:15,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 22:28:15,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:28:15,815 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:15,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:28:15,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:28:15,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139050298] [2020-07-20 22:28:15,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:28:15,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 22:28:15,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908970216] [2020-07-20 22:28:15,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:28:15,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:28:15,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:28:15,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:28:15,830 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 5 states. [2020-07-20 22:28:15,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:28:15,862 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2020-07-20 22:28:15,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 22:28:15,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-07-20 22:28:15,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:28:15,863 INFO L225 Difference]: With dead ends: 66 [2020-07-20 22:28:15,863 INFO L226 Difference]: Without dead ends: 64 [2020-07-20 22:28:15,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-20 22:28:15,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-20 22:28:15,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2020-07-20 22:28:15,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-20 22:28:15,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-07-20 22:28:15,868 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 42 [2020-07-20 22:28:15,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:28:15,869 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-07-20 22:28:15,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:28:15,869 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-07-20 22:28:15,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-20 22:28:15,869 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:28:15,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:28:16,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:16,080 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:28:16,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:28:16,080 INFO L82 PathProgramCache]: Analyzing trace with hash -769566670, now seen corresponding path program 1 times [2020-07-20 22:28:16,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:28:16,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768681191] [2020-07-20 22:28:16,081 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:16,139 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:28:16,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:28:16,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 22:28:16,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:28:16,157 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 22:28:16,158 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:16,165 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:16,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:28:16,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:28:16,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768681191] [2020-07-20 22:28:16,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:28:16,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 22:28:16,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657251590] [2020-07-20 22:28:16,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:28:16,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:28:16,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:28:16,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:28:16,175 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 5 states. [2020-07-20 22:28:16,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:28:16,298 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2020-07-20 22:28:16,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 22:28:16,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-07-20 22:28:16,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:28:16,299 INFO L225 Difference]: With dead ends: 76 [2020-07-20 22:28:16,299 INFO L226 Difference]: Without dead ends: 74 [2020-07-20 22:28:16,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 22:28:16,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-20 22:28:16,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 53. [2020-07-20 22:28:16,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-20 22:28:16,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-07-20 22:28:16,304 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 43 [2020-07-20 22:28:16,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:28:16,304 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-07-20 22:28:16,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:28:16,304 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-07-20 22:28:16,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-20 22:28:16,305 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:28:16,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:28:16,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:16,507 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:28:16,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:28:16,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1913240228, now seen corresponding path program 1 times [2020-07-20 22:28:16,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:28:16,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268365608] [2020-07-20 22:28:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:16,564 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:28:16,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:28:16,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 22:28:16,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:28:16,596 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 22:28:16,597 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:16,604 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:16,605 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:16,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:28:16,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:28:16,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268365608] [2020-07-20 22:28:16,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:28:16,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 22:28:16,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018226253] [2020-07-20 22:28:16,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:28:16,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:28:16,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:28:16,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:28:16,618 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-07-20 22:28:16,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:28:16,749 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2020-07-20 22:28:16,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 22:28:16,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-07-20 22:28:16,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:28:16,750 INFO L225 Difference]: With dead ends: 65 [2020-07-20 22:28:16,750 INFO L226 Difference]: Without dead ends: 63 [2020-07-20 22:28:16,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:28:16,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-20 22:28:16,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2020-07-20 22:28:16,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-07-20 22:28:16,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-07-20 22:28:16,757 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 44 [2020-07-20 22:28:16,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:28:16,757 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-07-20 22:28:16,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:28:16,758 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-07-20 22:28:16,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-20 22:28:16,758 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:28:16,758 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:28:16,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:16,969 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:28:16,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:28:16,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1562566919, now seen corresponding path program 1 times [2020-07-20 22:28:16,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:28:16,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147443848] [2020-07-20 22:28:16,970 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:17,013 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:28:17,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:28:17,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 22:28:17,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:28:17,046 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:28:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:28:17,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:28:17,060 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:28:17,069 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:28:17,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:28:17,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147443848] [2020-07-20 22:28:17,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:28:17,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-07-20 22:28:17,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500812058] [2020-07-20 22:28:17,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:28:17,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:28:17,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:28:17,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:28:17,088 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 5 states. [2020-07-20 22:28:17,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:28:17,155 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2020-07-20 22:28:17,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 22:28:17,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-07-20 22:28:17,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:28:17,156 INFO L225 Difference]: With dead ends: 51 [2020-07-20 22:28:17,156 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 22:28:17,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 77 SyntacticMatches, 7 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:28:17,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 22:28:17,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 22:28:17,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 22:28:17,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 22:28:17,159 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-07-20 22:28:17,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:28:17,159 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 22:28:17,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:28:17,159 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 22:28:17,160 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 22:28:17,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:28:17,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 22:28:17,677 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 87 [2020-07-20 22:28:17,974 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-07-20 22:28:18,307 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2020-07-20 22:28:18,425 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 21 [2020-07-20 22:28:18,693 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-07-20 22:28:18,696 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:28:18,696 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 22:28:18,697 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:28:18,697 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:28:18,697 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 22:28:18,697 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 22:28:18,697 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:28:18,697 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-20 22:28:18,697 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-20 22:28:18,697 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-07-20 22:28:18,697 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-20 22:28:18,697 INFO L268 CegarLoopResult]: For program point L192(lines 192 352) no Hoare annotation was computed. [2020-07-20 22:28:18,697 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 123) no Hoare annotation was computed. [2020-07-20 22:28:18,697 INFO L268 CegarLoopResult]: For program point L382(lines 382 391) no Hoare annotation was computed. [2020-07-20 22:28:18,698 INFO L268 CegarLoopResult]: For program point L93(lines 93 410) no Hoare annotation was computed. [2020-07-20 22:28:18,698 INFO L268 CegarLoopResult]: For program point L27(lines 27 435) no Hoare annotation was computed. [2020-07-20 22:28:18,698 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 437) no Hoare annotation was computed. [2020-07-20 22:28:18,698 INFO L268 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-07-20 22:28:18,698 INFO L264 CegarLoopResult]: At program point L399(lines 129 400) the Hoare annotation is: (and (<= 1 main_~__VERIFIER_assert__cond~1) (<= 0 main_~main__scheme~0) (<= (+ main_~main__cp~0 1) 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)) [2020-07-20 22:28:18,698 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 253) no Hoare annotation was computed. [2020-07-20 22:28:18,698 INFO L268 CegarLoopResult]: For program point L102(lines 102 409) no Hoare annotation was computed. [2020-07-20 22:28:18,698 INFO L268 CegarLoopResult]: For program point L69(lines 69 414) no Hoare annotation was computed. [2020-07-20 22:28:18,698 INFO L264 CegarLoopResult]: At program point L325(lines 260 326) the Hoare annotation is: (let ((.cse13 (+ main_~main__cp~0 1))) (and (= main_~__VERIFIER_assert__cond~10 1) (let ((.cse0 (<= 0 main_~main__scheme~0)) (.cse1 (= 1 main_~__VERIFIER_assert__cond~9)) (.cse2 (<= 1 main_~__VERIFIER_assert__cond~3)) (.cse3 (<= 1 main_~__VERIFIER_assert__cond~4)) (.cse4 (<= 1 main_~__VERIFIER_assert__cond~0)) (.cse5 (<= 1 main_~__VERIFIER_assert__cond~5)) (.cse6 (<= 1 main_~__VERIFIER_assert__cond~1)) (.cse7 (<= 1 main_~__VERIFIER_assert__cond~6)) (.cse8 (<= 1 main_~__VERIFIER_assert__cond~8)) (.cse9 (not (= 0 main_~main__scheme~0))) (.cse10 (<= 1 main_~main__cp~0)) (.cse11 (<= 1 main_~__VERIFIER_assert__cond~7)) (.cse12 (<= 1 main_~__VERIFIER_assert__cond~2))) (or (and .cse0 .cse1 .cse2 .cse3 (<= 1 main_~__VERIFIER_assert__cond~12) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse0 .cse1 (< (+ main_~main__c~0 1) main_~main__tokenlen~0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12))) (<= 0 main_~main__c~0) (<= .cse13 main_~main__urilen~0) (not (= .cse13 main_~main__urilen~0)) (= main_~__VERIFIER_assert__cond~11 1))) [2020-07-20 22:28:18,698 INFO L268 CegarLoopResult]: For program point L292(lines 292 316) no Hoare annotation was computed. [2020-07-20 22:28:18,699 INFO L268 CegarLoopResult]: For program point L160(lines 160 357) no Hoare annotation was computed. [2020-07-20 22:28:18,699 INFO L268 CegarLoopResult]: For program point L61(lines 61 420) no Hoare annotation was computed. [2020-07-20 22:28:18,699 INFO L268 CegarLoopResult]: For program point L251(lines 251 327) no Hoare annotation was computed. [2020-07-20 22:28:18,699 INFO L268 CegarLoopResult]: For program point L185(lines 185 353) no Hoare annotation was computed. [2020-07-20 22:28:18,699 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-07-20 22:28:18,699 INFO L264 CegarLoopResult]: At program point L408(lines 102 409) the Hoare annotation is: (<= 1 main_~__VERIFIER_assert__cond~0) [2020-07-20 22:28:18,699 INFO L268 CegarLoopResult]: For program point L210(lines 210 344) no Hoare annotation was computed. [2020-07-20 22:28:18,699 INFO L268 CegarLoopResult]: For program point L111(line 111) no Hoare annotation was computed. [2020-07-20 22:28:18,699 INFO L268 CegarLoopResult]: For program point L45(lines 45 432) no Hoare annotation was computed. [2020-07-20 22:28:18,699 INFO L268 CegarLoopResult]: For program point L268(lines 268 320) no Hoare annotation was computed. [2020-07-20 22:28:18,699 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 294) no Hoare annotation was computed. [2020-07-20 22:28:18,700 INFO L268 CegarLoopResult]: For program point L202(lines 202 351) no Hoare annotation was computed. [2020-07-20 22:28:18,700 INFO L268 CegarLoopResult]: For program point L260(lines 260 326) no Hoare annotation was computed. [2020-07-20 22:28:18,700 INFO L268 CegarLoopResult]: For program point L384(line 384) no Hoare annotation was computed. [2020-07-20 22:28:18,700 INFO L268 CegarLoopResult]: For program point L95(line 95) no Hoare annotation was computed. [2020-07-20 22:28:18,700 INFO L268 CegarLoopResult]: For program point L153(lines 153 358) no Hoare annotation was computed. [2020-07-20 22:28:18,700 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 155) no Hoare annotation was computed. [2020-07-20 22:28:18,700 INFO L268 CegarLoopResult]: For program point L21(lines 21 436) no Hoare annotation was computed. [2020-07-20 22:28:18,700 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 437) no Hoare annotation was computed. [2020-07-20 22:28:18,700 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 282) no Hoare annotation was computed. [2020-07-20 22:28:18,700 INFO L268 CegarLoopResult]: For program point L294(line 294) no Hoare annotation was computed. [2020-07-20 22:28:18,701 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2020-07-20 22:28:18,701 INFO L268 CegarLoopResult]: For program point L63(lines 63 415) no Hoare annotation was computed. [2020-07-20 22:28:18,701 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 437) the Hoare annotation is: true [2020-07-20 22:28:18,701 INFO L268 CegarLoopResult]: For program point L253(line 253) no Hoare annotation was computed. [2020-07-20 22:28:18,701 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-20 22:28:18,701 INFO L268 CegarLoopResult]: For program point L121(lines 121 401) no Hoare annotation was computed. [2020-07-20 22:28:18,701 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-07-20 22:28:18,701 INFO L268 CegarLoopResult]: For program point L270(line 270) no Hoare annotation was computed. [2020-07-20 22:28:18,701 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 212) no Hoare annotation was computed. [2020-07-20 22:28:18,701 INFO L268 CegarLoopResult]: For program point L39(lines 39 433) no Hoare annotation was computed. [2020-07-20 22:28:18,701 INFO L268 CegarLoopResult]: For program point mainErr16ASSERT_VIOLATIONERROR_FUNCTION(line 372) no Hoare annotation was computed. [2020-07-20 22:28:18,701 INFO L268 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-07-20 22:28:18,701 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 187) no Hoare annotation was computed. [2020-07-20 22:28:18,702 INFO L268 CegarLoopResult]: For program point L370(lines 370 393) no Hoare annotation was computed. [2020-07-20 22:28:18,702 INFO L268 CegarLoopResult]: For program point L81(lines 81 412) no Hoare annotation was computed. [2020-07-20 22:28:18,702 INFO L268 CegarLoopResult]: For program point L304(lines 304 314) no Hoare annotation was computed. [2020-07-20 22:28:18,702 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 306) no Hoare annotation was computed. [2020-07-20 22:28:18,702 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 111) no Hoare annotation was computed. [2020-07-20 22:28:18,702 INFO L268 CegarLoopResult]: For program point L222(lines 222 342) no Hoare annotation was computed. [2020-07-20 22:28:18,702 INFO L268 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2020-07-20 22:28:18,702 INFO L268 CegarLoopResult]: For program point L57(lines 57 430) no Hoare annotation was computed. [2020-07-20 22:28:18,702 INFO L264 CegarLoopResult]: At program point L313(lines 228 342) the Hoare annotation is: (let ((.cse2 (+ main_~main__cp~0 1))) (let ((.cse0 (<= 0 main_~main__scheme~0)) (.cse1 (= 1 main_~__VERIFIER_assert__cond~9)) (.cse3 (<= 1 main_~__VERIFIER_assert__cond~3)) (.cse4 (<= 1 main_~__VERIFIER_assert__cond~4)) (.cse5 (<= 1 main_~__VERIFIER_assert__cond~0)) (.cse6 (<= 1 main_~__VERIFIER_assert__cond~5)) (.cse7 (<= 1 main_~__VERIFIER_assert__cond~1)) (.cse8 (<= 1 main_~__VERIFIER_assert__cond~6)) (.cse9 (<= .cse2 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)) (.cse15 (<= 1 main_~__VERIFIER_assert__cond~2)) (.cse10 (<= 0 main_~main__c~0))) (or (and .cse0 .cse1 (not (= .cse2 main_~main__urilen~0)) .cse3 .cse4 (= 1 main_~__VERIFIER_assert__cond~8) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15) (and (let ((.cse16 (<= 1 main_~__VERIFIER_assert__cond~9))) (or (and .cse0 .cse1 .cse3 .cse4 (<= 1 main_~__VERIFIER_assert__cond~12) .cse5 .cse6 .cse7 .cse8 .cse9 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16) (and .cse0 .cse1 (< (+ main_~main__c~0 1) main_~main__tokenlen~0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16))) (<= 1 main_~__VERIFIER_assert__cond~10) .cse10 (= main_~__VERIFIER_assert__cond~11 1))))) [2020-07-20 22:28:18,702 INFO L268 CegarLoopResult]: For program point L280(lines 280 318) no Hoare annotation was computed. [2020-07-20 22:28:18,703 INFO L268 CegarLoopResult]: For program point L239(lines 239 329) no Hoare annotation was computed. [2020-07-20 22:28:18,703 INFO L268 CegarLoopResult]: For program point L173(lines 173 355) no Hoare annotation was computed. [2020-07-20 22:28:18,703 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 241) no Hoare annotation was computed. [2020-07-20 22:28:18,703 INFO L268 CegarLoopResult]: For program point L33(lines 33 434) no Hoare annotation was computed. [2020-07-20 22:28:18,703 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 95) no Hoare annotation was computed. [2020-07-20 22:28:18,703 INFO L268 CegarLoopResult]: For program point L372(line 372) no Hoare annotation was computed. [2020-07-20 22:28:18,703 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-07-20 22:28:18,703 INFO L268 CegarLoopResult]: For program point L306(line 306) no Hoare annotation was computed. [2020-07-20 22:28:18,703 INFO L268 CegarLoopResult]: For program point L141(lines 141 360) no Hoare annotation was computed. [2020-07-20 22:28:18,703 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 224) no Hoare annotation was computed. [2020-07-20 22:28:18,703 INFO L268 CegarLoopResult]: For program point L232(lines 232 336) no Hoare annotation was computed. [2020-07-20 22:28:18,703 INFO L268 CegarLoopResult]: For program point mainErr17ASSERT_VIOLATIONERROR_FUNCTION(line 384) no Hoare annotation was computed. [2020-07-20 22:28:18,703 INFO L268 CegarLoopResult]: For program point L133(lines 133 395) no Hoare annotation was computed. [2020-07-20 22:28:18,704 INFO L268 CegarLoopResult]: For program point L224(line 224) no Hoare annotation was computed. [2020-07-20 22:28:18,704 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 143) no Hoare annotation was computed. [2020-07-20 22:28:18,704 INFO L268 CegarLoopResult]: For program point L59(lines 59 425) no Hoare annotation was computed. [2020-07-20 22:28:18,704 INFO L268 CegarLoopResult]: For program point L282(line 282) no Hoare annotation was computed. [2020-07-20 22:28:18,704 INFO L268 CegarLoopResult]: For program point L51(lines 51 431) no Hoare annotation was computed. [2020-07-20 22:28:18,704 INFO L268 CegarLoopResult]: For program point L241(line 241) no Hoare annotation was computed. [2020-07-20 22:28:18,704 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 270) no Hoare annotation was computed. [2020-07-20 22:28:18,704 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-20 22:28:18,704 INFO L268 CegarLoopResult]: For program point L109(lines 109 403) no Hoare annotation was computed. [2020-07-20 22:28:18,704 INFO L264 CegarLoopResult]: At program point L390(lines 127 401) the Hoare annotation is: (and (<= 0 main_~main__scheme~0) (let ((.cse0 (<= 1 main_~__VERIFIER_assert__cond~1)) (.cse1 (<= 1 main_~__VERIFIER_assert__cond~3)) (.cse2 (not (= 0 main_~main__scheme~0))) (.cse3 (<= 1 main_~main__cp~0)) (.cse4 (<= 1 main_~__VERIFIER_assert__cond~0))) (or (and .cse0 (= 1 main_~__VERIFIER_assert__cond~2) .cse1 .cse2 .cse3 .cse4) (and .cse0 (<= 1 main_~__VERIFIER_assert__cond~16) .cse1 .cse2 .cse3 (<= 1 main_~__VERIFIER_assert__cond~17) (<= 1 main_~__VERIFIER_assert__cond~2) .cse4))) (<= (+ main_~main__cp~0 1) main_~main__urilen~0)) [2020-07-20 22:28:18,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:28:18 BoogieIcfgContainer [2020-07-20 22:28:18,726 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 22:28:18,728 INFO L168 Benchmark]: Toolchain (without parser) took 12118.53 ms. Allocated memory was 144.7 MB in the beginning and 298.8 MB in the end (delta: 154.1 MB). Free memory was 102.8 MB in the beginning and 202.7 MB in the end (delta: -99.9 MB). Peak memory consumption was 144.1 MB. Max. memory is 7.1 GB. [2020-07-20 22:28:18,728 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 22:28:18,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.29 ms. Allocated memory is still 144.7 MB. Free memory was 102.4 MB in the beginning and 89.0 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-07-20 22:28:18,730 INFO L168 Benchmark]: Boogie Preprocessor took 129.85 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 89.0 MB in the beginning and 178.9 MB in the end (delta: -89.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-20 22:28:18,731 INFO L168 Benchmark]: RCFGBuilder took 608.22 ms. Allocated memory is still 201.9 MB. Free memory was 178.9 MB in the beginning and 151.3 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-07-20 22:28:18,731 INFO L168 Benchmark]: TraceAbstraction took 10977.48 ms. Allocated memory was 201.9 MB in the beginning and 298.8 MB in the end (delta: 97.0 MB). Free memory was 150.6 MB in the beginning and 202.7 MB in the end (delta: -52.1 MB). Peak memory consumption was 134.8 MB. Max. memory is 7.1 GB. [2020-07-20 22:28:18,734 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 394.29 ms. Allocated memory is still 144.7 MB. Free memory was 102.4 MB in the beginning and 89.0 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.85 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 89.0 MB in the beginning and 178.9 MB in the end (delta: -89.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 608.22 ms. Allocated memory is still 201.9 MB. Free memory was 178.9 MB in the beginning and 151.3 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10977.48 ms. Allocated memory was 201.9 MB in the beginning and 298.8 MB in the end (delta: 97.0 MB). Free memory was 150.6 MB in the beginning and 202.7 MB in the end (delta: -52.1 MB). Peak memory consumption was 134.8 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 && ((((((1 <= __VERIFIER_assert__cond && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) || (((((((1 <= __VERIFIER_assert__cond && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond))) && main__cp + 1 <= main__urilen - InvariantResult [Line: 102]: Loop Invariant Derived loop invariant: 1 <= __VERIFIER_assert__cond - InvariantResult [Line: 228]: Loop Invariant Derived loop invariant: ((((((((((((((((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) && 1 <= __VERIFIER_assert__cond) && main__cp + 1 <= main__urilen) && 0 <= main__c) && 1 <= __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) || (((((((((((((((((((0 <= main__scheme && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 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) && 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) && 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)) && 1 <= __VERIFIER_assert__cond) && 0 <= main__c) && __VERIFIER_assert__cond == 1) - 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) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond - InvariantResult [Line: 260]: Loop Invariant Derived loop invariant: ((((__VERIFIER_assert__cond == 1 && ((((((((((((((0 <= main__scheme && 1 == __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) || (((((((((((((0 <= main__scheme && 1 == __VERIFIER_assert__cond) && main__c + 1 < main__tokenlen) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) && !(0 == main__scheme)) && 1 <= main__cp) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond))) && 0 <= main__c) && main__cp + 1 <= main__urilen) && !(main__cp + 1 == 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: 9.5s, OverallIterations: 22, TraceHistogramMax: 2, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1285 SDtfs, 2004 SDslu, 1516 SDs, 0 SdLazy, 1013 SolverSat, 104 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 826 GetRequests, 707 SyntacticMatches, 18 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 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: 0.2s AutomataMinimizationTime, 22 MinimizatonAttempts, 355 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 379 HoareAnnotationTreeSize, 9 FomulaSimplifications, 466961 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 9 FomulaSimplificationsInter, 18240 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 701 NumberOfCodeBlocks, 660 NumberOfCodeBlocksAsserted, 80 NumberOfCheckSat, 781 ConstructedInterpolants, 0 QuantifiedInterpolants, 70852 SizeOfPredicates, 110 NumberOfNonLiveVariables, 2262 ConjunctsInSsa, 153 ConjunctsInUnsatCore, 25 InterpolantComputations, 19 PerfectInterpolantSequences, 4/16 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...